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Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6

Browse source
This commit is contained in:
David Woodhouse 2006-08-30 23:30:38 +01:00
commit 0a7d5f8ce9
2138 changed files with 52985 additions and 23373 deletions
Download patch file Download diff file Expand all files Collapse all files

6
fs/9p/conv.c
View file

@ -673,8 +673,10 @@ struct v9fs_fcall *v9fs_create_tcreate(u32 fid, char *name, u32 perm, u8 mode,
struct cbuf *bufp = &buffer;
size = 4 + 2 + strlen(name) + 4 + 1; /* fid[4] name[s] perm[4] mode[1] */
if (extended && extension!=NULL)
size += 2 + strlen(extension); /* extension[s] */
if (extended) {
size += 2 + /* extension[s] */
(extension == NULL ? 0 : strlen(extension));
}
fc = v9fs_create_common(bufp, size, TCREATE);
if (IS_ERR(fc))

6
fs/9p/vfs_inode.c
View file

@ -434,11 +434,11 @@ static int v9fs_remove(struct inode *dir, struct dentry *file, int rmdir)
result = v9fs_t_remove(v9ses, fid, &fcall);
if (result < 0) {
PRINT_FCALL_ERROR("remove fails", fcall);
} else {
v9fs_put_idpool(fid, &v9ses->fidpool);
v9fs_fid_destroy(v9fid);
}
v9fs_put_idpool(fid, &v9ses->fidpool);
v9fs_fid_destroy(v9fid);
kfree(fcall);
return result;
}

1
fs/Kconfig
View file

@ -1801,6 +1801,7 @@ config CIFS_POSIX
config CIFS_DEBUG2
bool "Enable additional CIFS debugging routines"
depends on CIFS
help
Enabling this option adds a few more debugging routines
to the cifs code which slightly increases the size of

2
fs/adfs/super.c
View file

@ -308,7 +308,7 @@ static struct adfs_discmap *adfs_read_map(struct super_block *sb, struct adfs_di
if (adfs_checkmap(sb, dm))
return dm;
adfs_error(sb, NULL, "map corrupted");
adfs_error(sb, "map corrupted");
error_free:
while (--zone >= 0)

11
fs/befs/linuxvfs.c
View file

@ -512,7 +512,11 @@ befs_utf2nls(struct super_block *sb, const char *in,
wchar_t uni;
int unilen, utflen;
char *result;
int maxlen = in_len; /* The utf8->nls conversion can't make more chars */
/* The utf8->nls conversion won't make the final nls string bigger
* than the utf one, but if the string is pure ascii they'll have the
* same width and an extra char is needed to save the additional \0
*/
int maxlen = in_len + 1;
befs_debug(sb, "---> utf2nls()");
@ -588,7 +592,10 @@ befs_nls2utf(struct super_block *sb, const char *in,
wchar_t uni;
int unilen, utflen;
char *result;
int maxlen = 3 * in_len;
/* There're nls characters that will translate to 3-chars-wide UTF-8
* characters, a additional byte is needed to save the final \0
* in special cases */
int maxlen = (3 * in_len) + 1;
befs_debug(sb, "---> nls2utf()\n");

2
fs/binfmt_elf.c
View file

@ -1185,8 +1185,6 @@ static int maydump(struct vm_area_struct *vma)
return 1;
}
#define roundup(x, y) ((((x) + ((y) - 1)) / (y)) * (y))
/* An ELF note in memory */
struct memelfnote
{

988
fs/binfmt_elf_fdpic.c
View file

File diff suppressed because it is too large Load diff

114
fs/block_dev.c
View file

@ -884,6 +884,61 @@ void bd_set_size(struct block_device *bdev, loff_t size)
}
EXPORT_SYMBOL(bd_set_size);
static int __blkdev_put(struct block_device *bdev, unsigned int subclass)
{
int ret = 0;
struct inode *bd_inode = bdev->bd_inode;
struct gendisk *disk = bdev->bd_disk;
mutex_lock_nested(&bdev->bd_mutex, subclass);
lock_kernel();
if (!--bdev->bd_openers) {
sync_blockdev(bdev);
kill_bdev(bdev);
}
if (bdev->bd_contains == bdev) {
if (disk->fops->release)
ret = disk->fops->release(bd_inode, NULL);
} else {
mutex_lock_nested(&bdev->bd_contains->bd_mutex,
subclass + 1);
bdev->bd_contains->bd_part_count--;
mutex_unlock(&bdev->bd_contains->bd_mutex);
}
if (!bdev->bd_openers) {
struct module *owner = disk->fops->owner;
put_disk(disk);
module_put(owner);
if (bdev->bd_contains != bdev) {
kobject_put(&bdev->bd_part->kobj);
bdev->bd_part = NULL;
}
bdev->bd_disk = NULL;
bdev->bd_inode->i_data.backing_dev_info = &default_backing_dev_info;
if (bdev != bdev->bd_contains)
__blkdev_put(bdev->bd_contains, subclass + 1);
bdev->bd_contains = NULL;
}
unlock_kernel();
mutex_unlock(&bdev->bd_mutex);
bdput(bdev);
return ret;
}
int blkdev_put(struct block_device *bdev)
{
return __blkdev_put(bdev, BD_MUTEX_NORMAL);
}
EXPORT_SYMBOL(blkdev_put);
int blkdev_put_partition(struct block_device *bdev)
{
return __blkdev_put(bdev, BD_MUTEX_PARTITION);
}
EXPORT_SYMBOL(blkdev_put_partition);
static int
blkdev_get_whole(struct block_device *bdev, mode_t mode, unsigned flags);
@ -980,7 +1035,7 @@ out_first:
bdev->bd_disk = NULL;
bdev->bd_inode->i_data.backing_dev_info = &default_backing_dev_info;
if (bdev != bdev->bd_contains)
blkdev_put(bdev->bd_contains);
__blkdev_put(bdev->bd_contains, BD_MUTEX_WHOLE);
bdev->bd_contains = NULL;
put_disk(disk);
module_put(owner);
@ -1079,63 +1134,6 @@ static int blkdev_open(struct inode * inode, struct file * filp)
return res;
}
static int __blkdev_put(struct block_device *bdev, unsigned int subclass)
{
int ret = 0;
struct inode *bd_inode = bdev->bd_inode;
struct gendisk *disk = bdev->bd_disk;
mutex_lock_nested(&bdev->bd_mutex, subclass);
lock_kernel();
if (!--bdev->bd_openers) {
sync_blockdev(bdev);
kill_bdev(bdev);
}
if (bdev->bd_contains == bdev) {
if (disk->fops->release)
ret = disk->fops->release(bd_inode, NULL);
} else {
mutex_lock_nested(&bdev->bd_contains->bd_mutex,
subclass + 1);
bdev->bd_contains->bd_part_count--;
mutex_unlock(&bdev->bd_contains->bd_mutex);
}
if (!bdev->bd_openers) {
struct module *owner = disk->fops->owner;
put_disk(disk);
module_put(owner);
if (bdev->bd_contains != bdev) {
kobject_put(&bdev->bd_part->kobj);
bdev->bd_part = NULL;
}
bdev->bd_disk = NULL;
bdev->bd_inode->i_data.backing_dev_info = &default_backing_dev_info;
if (bdev != bdev->bd_contains)
__blkdev_put(bdev->bd_contains, subclass + 1);
bdev->bd_contains = NULL;
}
unlock_kernel();
mutex_unlock(&bdev->bd_mutex);
bdput(bdev);
return ret;
}
int blkdev_put(struct block_device *bdev)
{
return __blkdev_put(bdev, BD_MUTEX_NORMAL);
}
EXPORT_SYMBOL(blkdev_put);
int blkdev_put_partition(struct block_device *bdev)
{
return __blkdev_put(bdev, BD_MUTEX_PARTITION);
}
EXPORT_SYMBOL(blkdev_put_partition);
static int blkdev_close(struct inode * inode, struct file * filp)
{
struct block_device *bdev = I_BDEV(filp->f_mapping->host);

7
fs/buffer.c
View file

@ -470,13 +470,18 @@ out:
pass does the actual I/O. */
void invalidate_bdev(struct block_device *bdev, int destroy_dirty_buffers)
{
struct address_space *mapping = bdev->bd_inode->i_mapping;
if (mapping->nrpages == 0)
return;
invalidate_bh_lrus();
/*
* FIXME: what about destroy_dirty_buffers?
* We really want to use invalidate_inode_pages2() for
* that, but not until that's cleaned up.
*/
invalidate_inode_pages(bdev->bd_inode->i_mapping);
invalidate_inode_pages(mapping);
}
/*

22
fs/char_dev.c
View file

@ -182,6 +182,28 @@ int alloc_chrdev_region(dev_t *dev, unsigned baseminor, unsigned count,
return 0;
}
/**
* register_chrdev() - Register a major number for character devices.
* @major: major device number or 0 for dynamic allocation
* @name: name of this range of devices
* @fops: file operations associated with this devices
*
* If @major == 0 this functions will dynamically allocate a major and return
* its number.
*
* If @major > 0 this function will attempt to reserve a device with the given
* major number and will return zero on success.
*
* Returns a -ve errno on failure.
*
* The name of this device has nothing to do with the name of the device in
* /dev. It only helps to keep track of the different owners of devices. If
* your module name has only one type of devices it's ok to use e.g. the name
* of the module here.
*
* This function registers a range of 256 minor numbers. The first minor number
* is 0.
*/
int register_chrdev(unsigned int major, const char *name,
const struct file_operations *fops)
{

10
fs/cifs/CHANGES
View file

@ -1,3 +1,13 @@
Version 1.45
------------
Do not time out lockw calls when using posix extensions. Do not
time out requests if server still responding reasonably fast
on requests on other threads. Improve POSIX locking emulation,
(lock cancel now works, and unlock of merged range works even
to Windows servers now). Fix oops on mount to lanman servers
(win9x, os/2 etc.) when null password. Do not send listxattr
(SMB to query all EAs) if nouser_xattr specified.
Version 1.44
------------
Rewritten sessionsetup support, including support for legacy SMB

2
fs/cifs/README
View file

@ -408,7 +408,7 @@ A partial list of the supported mount options follows:
user_xattr Allow getting and setting user xattrs as OS/2 EAs (extended
attributes) to the server (default) e.g. via setfattr
and getfattr utilities.
nouser_xattr Do not allow getfattr/setfattr to get/set xattrs
nouser_xattr Do not allow getfattr/setfattr to get/set/list xattrs
mapchars Translate six of the seven reserved characters (not backslash)
*?<>|:
to the remap range (above 0xF000), which also

3
fs/cifs/cifsencrypt.c
View file

@ -277,7 +277,8 @@ void calc_lanman_hash(struct cifsSesInfo * ses, char * lnm_session_key)
return;
memset(password_with_pad, 0, CIFS_ENCPWD_SIZE);
strncpy(password_with_pad, ses->password, CIFS_ENCPWD_SIZE);
if(ses->password)
strncpy(password_with_pad, ses->password, CIFS_ENCPWD_SIZE);
if((ses->server->secMode & SECMODE_PW_ENCRYPT) == 0)
if(extended_security & CIFSSEC_MAY_PLNTXT) {

6
fs/cifs/cifsfs.c
View file

@ -402,7 +402,6 @@ static struct quotactl_ops cifs_quotactl_ops = {
};
#endif
#ifdef CONFIG_CIFS_EXPERIMENTAL
static void cifs_umount_begin(struct vfsmount * vfsmnt, int flags)
{
struct cifs_sb_info *cifs_sb;
@ -422,7 +421,7 @@ static void cifs_umount_begin(struct vfsmount * vfsmnt, int flags)
tcon->tidStatus = CifsExiting;
up(&tcon->tconSem);
/* cancel_brl_requests(tcon); */
/* cancel_brl_requests(tcon); */ /* BB mark all brl mids as exiting */
/* cancel_notify_requests(tcon); */
if(tcon->ses && tcon->ses->server)
{
@ -438,7 +437,6 @@ static void cifs_umount_begin(struct vfsmount * vfsmnt, int flags)
return;
}
#endif
static int cifs_remount(struct super_block *sb, int *flags, char *data)
{
@ -457,9 +455,7 @@ struct super_operations cifs_super_ops = {
unless later we add lazy close of inodes or unless the kernel forgets to call
us with the same number of releases (closes) as opens */
.show_options = cifs_show_options,
#ifdef CONFIG_CIFS_EXPERIMENTAL
.umount_begin = cifs_umount_begin,
#endif
.remount_fs = cifs_remount,
};

2
fs/cifs/cifsfs.h
View file

@ -100,5 +100,5 @@ extern ssize_t cifs_getxattr(struct dentry *, const char *, void *, size_t);
extern ssize_t cifs_listxattr(struct dentry *, char *, size_t);
extern int cifs_ioctl (struct inode * inode, struct file * filep,
unsigned int command, unsigned long arg);
#define CIFS_VERSION "1.44"
#define CIFS_VERSION "1.45"
#endif /* _CIFSFS_H */

18
fs/cifs/cifsglob.h
View file

@ -3,6 +3,7 @@
*
* Copyright (C) International Business Machines Corp., 2002,2006
* Author(s): Steve French (sfrench@us.ibm.com)
* Jeremy Allison (jra@samba.org)
*
* This library is free software; you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published
@ -158,7 +159,8 @@ struct TCP_Server_Info {
/* 16th byte of RFC1001 workstation name is always null */
char workstation_RFC1001_name[SERVER_NAME_LEN_WITH_NULL];
__u32 sequence_number; /* needed for CIFS PDU signature */
char mac_signing_key[CIFS_SESS_KEY_SIZE + 16];
char mac_signing_key[CIFS_SESS_KEY_SIZE + 16];
unsigned long lstrp; /* when we got last response from this server */
};
/*
@ -266,14 +268,14 @@ struct cifsTconInfo {
};
/*
* This info hangs off the cifsFileInfo structure. This is used to track
* byte stream locks on the file
* This info hangs off the cifsFileInfo structure, pointed to by llist.
* This is used to track byte stream locks on the file
*/
struct cifsLockInfo {
struct cifsLockInfo *next;
int start;
int length;
int type;
struct list_head llist; /* pointer to next cifsLockInfo */
__u64 offset;
__u64 length;
__u8 type;
};
/*
@ -304,6 +306,8 @@ struct cifsFileInfo {
/* lock scope id (0 if none) */
struct file * pfile; /* needed for writepage */
struct inode * pInode; /* needed for oplock break */
struct semaphore lock_sem;
struct list_head llist; /* list of byte range locks we have. */
unsigned closePend:1; /* file is marked to close */
unsigned invalidHandle:1; /* file closed via session abend */
atomic_t wrtPending; /* handle in use - defer close */

4
fs/cifs/cifsproto.h
View file

@ -50,6 +50,10 @@ extern int SendReceive(const unsigned int /* xid */ , struct cifsSesInfo *,
extern int SendReceive2(const unsigned int /* xid */ , struct cifsSesInfo *,
struct kvec *, int /* nvec to send */,
int * /* type of buf returned */ , const int long_op);
extern int SendReceiveBlockingLock(const unsigned int /* xid */ , struct cifsTconInfo *,
struct smb_hdr * /* input */ ,
struct smb_hdr * /* out */ ,
int * /* bytes returned */);
extern int checkSMBhdr(struct smb_hdr *smb, __u16 mid);
extern int checkSMB(struct smb_hdr *smb, __u16 mid, int length);
extern int is_valid_oplock_break(struct smb_hdr *smb, struct TCP_Server_Info *);

28
fs/cifs/cifssmb.c
View file

@ -477,7 +477,7 @@ CIFSSMBNegotiate(unsigned int xid, struct cifsSesInfo *ses)
/* BB get server time for time conversions and add
code to use it and timezone since this is not UTC */
if (rsp->EncryptionKeyLength == CIFS_CRYPTO_KEY_SIZE) {
if (rsp->EncryptionKeyLength == cpu_to_le16(CIFS_CRYPTO_KEY_SIZE)) {
memcpy(server->cryptKey, rsp->EncryptionKey,
CIFS_CRYPTO_KEY_SIZE);
} else if (server->secMode & SECMODE_PW_ENCRYPT) {
@ -1460,8 +1460,13 @@ CIFSSMBLock(const int xid, struct cifsTconInfo *tcon,
pSMB->hdr.smb_buf_length += count;
pSMB->ByteCount = cpu_to_le16(count);
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
if (waitFlag) {
rc = SendReceiveBlockingLock(xid, tcon, (struct smb_hdr *) pSMB,
(struct smb_hdr *) pSMBr, &bytes_returned);
} else {
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
(struct smb_hdr *) pSMBr, &bytes_returned, timeout);
}
cifs_stats_inc(&tcon->num_locks);
if (rc) {
cFYI(1, ("Send error in Lock = %d", rc));
@ -1484,6 +1489,7 @@ CIFSSMBPosixLock(const int xid, struct cifsTconInfo *tcon,
char *data_offset;
struct cifs_posix_lock *parm_data;
int rc = 0;
int timeout = 0;
int bytes_returned = 0;
__u16 params, param_offset, offset, byte_count, count;
@ -1503,7 +1509,6 @@ CIFSSMBPosixLock(const int xid, struct cifsTconInfo *tcon,
pSMB->MaxSetupCount = 0;
pSMB->Reserved = 0;
pSMB->Flags = 0;
pSMB->Timeout = 0;
pSMB->Reserved2 = 0;
param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4;
offset = param_offset + params;
@ -1529,8 +1534,13 @@ CIFSSMBPosixLock(const int xid, struct cifsTconInfo *tcon,
(((char *) &pSMB->hdr.Protocol) + offset);
parm_data->lock_type = cpu_to_le16(lock_type);
if(waitFlag)
if(waitFlag) {
timeout = 3; /* blocking operation, no timeout */
parm_data->lock_flags = cpu_to_le16(1);
pSMB->Timeout = cpu_to_le32(-1);
} else
pSMB->Timeout = 0;
parm_data->pid = cpu_to_le32(current->tgid);
parm_data->start = cpu_to_le64(pLockData->fl_start);
parm_data->length = cpu_to_le64(len); /* normalize negative numbers */
@ -1541,8 +1551,14 @@ CIFSSMBPosixLock(const int xid, struct cifsTconInfo *tcon,
pSMB->Reserved4 = 0;
pSMB->hdr.smb_buf_length += byte_count;
pSMB->ByteCount = cpu_to_le16(byte_count);
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
(struct smb_hdr *) pSMBr, &bytes_returned, 0);
if (waitFlag) {
rc = SendReceiveBlockingLock(xid, tcon, (struct smb_hdr *) pSMB,
(struct smb_hdr *) pSMBr, &bytes_returned);
} else {
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
(struct smb_hdr *) pSMBr, &bytes_returned, timeout);
}
if (rc) {
cFYI(1, ("Send error in Posix Lock = %d", rc));
} else if (get_flag) {

32
fs/cifs/connect.c
View file

@ -182,6 +182,7 @@ cifs_reconnect(struct TCP_Server_Info *server)
while ((server->tcpStatus != CifsExiting) && (server->tcpStatus != CifsGood))
{
try_to_freeze();
if(server->protocolType == IPV6) {
rc = ipv6_connect(&server->addr.sockAddr6,&server->ssocket);
} else {
@ -612,6 +613,10 @@ multi_t2_fnd:
#ifdef CONFIG_CIFS_STATS2
mid_entry->when_received = jiffies;
#endif
/* so we do not time out requests to server
which is still responding (since server could
be busy but not dead) */
server->lstrp = jiffies;
break;
}
}
@ -1266,33 +1271,35 @@ find_unc(__be32 new_target_ip_addr, char *uncName, char *userName)
read_lock(&GlobalSMBSeslock);
list_for_each(tmp, &GlobalTreeConnectionList) {
cFYI(1, ("Next tcon - "));
cFYI(1, ("Next tcon"));
tcon = list_entry(tmp, struct cifsTconInfo, cifsConnectionList);
if (tcon->ses) {
if (tcon->ses->server) {
cFYI(1,
(" old ip addr: %x == new ip %x ?",
("old ip addr: %x == new ip %x ?",
tcon->ses->server->addr.sockAddr.sin_addr.
s_addr, new_target_ip_addr));
if (tcon->ses->server->addr.sockAddr.sin_addr.
s_addr == new_target_ip_addr) {
/* BB lock tcon and server and tcp session and increment use count here? */
/* BB lock tcon, server and tcp session and increment use count here? */
/* found a match on the TCP session */
/* BB check if reconnection needed */
cFYI(1,("Matched ip, old UNC: %s == new: %s ?",
cFYI(1,("IP match, old UNC: %s new: %s",
tcon->treeName, uncName));
if (strncmp
(tcon->treeName, uncName,
MAX_TREE_SIZE) == 0) {
cFYI(1,
("Matched UNC, old user: %s == new: %s ?",
("and old usr: %s new: %s",
tcon->treeName, uncName));
if (strncmp
(tcon->ses->userName,
userName,
MAX_USERNAME_SIZE) == 0) {
read_unlock(&GlobalSMBSeslock);
return tcon;/* also matched user (smb session)*/
/* matched smb session
(user name */
return tcon;
}
}
}
@ -1969,7 +1976,18 @@ cifs_mount(struct super_block *sb, struct cifs_sb_info *cifs_sb,
}
cFYI(1,("Negotiate caps 0x%x",(int)cap));
#ifdef CONFIG_CIFS_DEBUG2
if(cap & CIFS_UNIX_FCNTL_CAP)
cFYI(1,("FCNTL cap"));
if(cap & CIFS_UNIX_EXTATTR_CAP)
cFYI(1,("EXTATTR cap"));
if(cap & CIFS_UNIX_POSIX_PATHNAMES_CAP)
cFYI(1,("POSIX path cap"));
if(cap & CIFS_UNIX_XATTR_CAP)
cFYI(1,("XATTR cap"));
if(cap & CIFS_UNIX_POSIX_ACL_CAP)
cFYI(1,("POSIX ACL cap"));
#endif /* CIFS_DEBUG2 */
if (CIFSSMBSetFSUnixInfo(xid, tcon, cap)) {
cFYI(1,("setting capabilities failed"));
}

4
fs/cifs/dir.c
View file

@ -267,6 +267,10 @@ cifs_create(struct inode *inode, struct dentry *direntry, int mode,
pCifsFile->invalidHandle = FALSE;
pCifsFile->closePend = FALSE;
init_MUTEX(&pCifsFile->fh_sem);
init_MUTEX(&pCifsFile->lock_sem);
INIT_LIST_HEAD(&pCifsFile->llist);
atomic_set(&pCifsFile->wrtPending,0);
/* set the following in open now
pCifsFile->pfile = file; */
write_lock(&GlobalSMBSeslock);

97
fs/cifs/file.c
View file

@ -5,6 +5,7 @@
*
* Copyright (C) International Business Machines Corp., 2002,2003
* Author(s): Steve French (sfrench@us.ibm.com)
* Jeremy Allison (jra@samba.org)
*
* This library is free software; you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published
@ -47,6 +48,8 @@ static inline struct cifsFileInfo *cifs_init_private(
private_data->netfid = netfid;
private_data->pid = current->tgid;
init_MUTEX(&private_data->fh_sem);
init_MUTEX(&private_data->lock_sem);
INIT_LIST_HEAD(&private_data->llist);
private_data->pfile = file; /* needed for writepage */
private_data->pInode = inode;
private_data->invalidHandle = FALSE;
@ -473,6 +476,8 @@ int cifs_close(struct inode *inode, struct file *file)
cifs_sb = CIFS_SB(inode->i_sb);
pTcon = cifs_sb->tcon;
if (pSMBFile) {
struct cifsLockInfo *li, *tmp;
pSMBFile->closePend = TRUE;
if (pTcon) {
/* no sense reconnecting to close a file that is
@ -496,6 +501,16 @@ int cifs_close(struct inode *inode, struct file *file)
pSMBFile->netfid);
}
}
/* Delete any outstanding lock records.
We'll lose them when the file is closed anyway. */
down(&pSMBFile->lock_sem);
list_for_each_entry_safe(li, tmp, &pSMBFile->llist, llist) {
list_del(&li->llist);
kfree(li);
}
up(&pSMBFile->lock_sem);
write_lock(&GlobalSMBSeslock);
list_del(&pSMBFile->flist);
list_del(&pSMBFile->tlist);
@ -570,6 +585,21 @@ int cifs_closedir(struct inode *inode, struct file *file)
return rc;
}
static int store_file_lock(struct cifsFileInfo *fid, __u64 len,
__u64 offset, __u8 lockType)
{
struct cifsLockInfo *li = kmalloc(sizeof(struct cifsLockInfo), GFP_KERNEL);
if (li == NULL)
return -ENOMEM;
li->offset = offset;
li->length = len;
li->type = lockType;
down(&fid->lock_sem);
list_add(&li->llist, &fid->llist);
up(&fid->lock_sem);
return 0;
}
int cifs_lock(struct file *file, int cmd, struct file_lock *pfLock)
{
int rc, xid;
@ -581,6 +611,7 @@ int cifs_lock(struct file *file, int cmd, struct file_lock *pfLock)
struct cifsTconInfo *pTcon;
__u16 netfid;
__u8 lockType = LOCKING_ANDX_LARGE_FILES;
int posix_locking;
length = 1 + pfLock->fl_end - pfLock->fl_start;
rc = -EACCES;
@ -639,15 +670,14 @@ int cifs_lock(struct file *file, int cmd, struct file_lock *pfLock)
}
netfid = ((struct cifsFileInfo *)file->private_data)->netfid;
posix_locking = (cifs_sb->tcon->ses->capabilities & CAP_UNIX) &&
(CIFS_UNIX_FCNTL_CAP & le64_to_cpu(cifs_sb->tcon->fsUnixInfo.Capability));
/* BB add code here to normalize offset and length to
account for negative length which we can not accept over the
wire */
if (IS_GETLK(cmd)) {
if(experimEnabled &&
(cifs_sb->tcon->ses->capabilities & CAP_UNIX) &&
(CIFS_UNIX_FCNTL_CAP &
le64_to_cpu(cifs_sb->tcon->fsUnixInfo.Capability))) {
if(posix_locking) {
int posix_lock_type;
if(lockType & LOCKING_ANDX_SHARED_LOCK)
posix_lock_type = CIFS_RDLCK;
@ -683,10 +713,15 @@ int cifs_lock(struct file *file, int cmd, struct file_lock *pfLock)
FreeXid(xid);
return rc;
}
if (experimEnabled &&
(cifs_sb->tcon->ses->capabilities & CAP_UNIX) &&
(CIFS_UNIX_FCNTL_CAP &
le64_to_cpu(cifs_sb->tcon->fsUnixInfo.Capability))) {
if (!numLock && !numUnlock) {
/* if no lock or unlock then nothing
to do since we do not know what it is */
FreeXid(xid);
return -EOPNOTSUPP;
}
if (posix_locking) {
int posix_lock_type;
if(lockType & LOCKING_ANDX_SHARED_LOCK)
posix_lock_type = CIFS_RDLCK;
@ -695,18 +730,46 @@ int cifs_lock(struct file *file, int cmd, struct file_lock *pfLock)
if(numUnlock == 1)
posix_lock_type = CIFS_UNLCK;
else if(numLock == 0) {
/* if no lock or unlock then nothing
to do since we do not know what it is */
FreeXid(xid);
return -EOPNOTSUPP;
}
rc = CIFSSMBPosixLock(xid, pTcon, netfid, 0 /* set */,
length, pfLock,
posix_lock_type, wait_flag);
} else
rc = CIFSSMBLock(xid, pTcon, netfid, length, pfLock->fl_start,
numUnlock, numLock, lockType, wait_flag);
} else {
struct cifsFileInfo *fid = (struct cifsFileInfo *)file->private_data;
if (numLock) {
rc = CIFSSMBLock(xid, pTcon, netfid, length, pfLock->fl_start,
0, numLock, lockType, wait_flag);
if (rc == 0) {
/* For Windows locks we must store them. */
rc = store_file_lock(fid, length,
pfLock->fl_start, lockType);
}
} else if (numUnlock) {
/* For each stored lock that this unlock overlaps
completely, unlock it. */
int stored_rc = 0;
struct cifsLockInfo *li, *tmp;
down(&fid->lock_sem);
list_for_each_entry_safe(li, tmp, &fid->llist, llist) {
if (pfLock->fl_start <= li->offset &&
length >= li->length) {
stored_rc = CIFSSMBLock(xid, pTcon, netfid,
li->length, li->offset,
1, 0, li->type, FALSE);
if (stored_rc)
rc = stored_rc;
list_del(&li->llist);
kfree(li);
}
}
up(&fid->lock_sem);
}
}
if (pfLock->fl_flags & FL_POSIX)
posix_lock_file_wait(file, pfLock);
FreeXid(xid);

1
fs/cifs/netmisc.c
View file

@ -72,6 +72,7 @@ static const struct smb_to_posix_error mapping_table_ERRDOS[] = {
{ERRinvlevel,-EOPNOTSUPP},
{ERRdirnotempty, -ENOTEMPTY},
{ERRnotlocked, -ENOLCK},
{ERRcancelviolation, -ENOLCK},
{ERRalreadyexists, -EEXIST},
{ERRmoredata, -EOVERFLOW},
{ERReasnotsupported,-EOPNOTSUPP},

2
fs/cifs/readdir.c
View file

@ -556,7 +556,7 @@ static int cifs_entry_is_dot(char *current_entry, struct cifsFileInfo *cfile)
FIND_FILE_STANDARD_INFO * pFindData =
(FIND_FILE_STANDARD_INFO *)current_entry;
filename = &pFindData->FileName[0];
len = le32_to_cpu(pFindData->FileNameLength);
len = pFindData->FileNameLength;
} else {
cFYI(1,("Unknown findfirst level %d",cfile->srch_inf.info_level));
}

2
fs/cifs/sess.c
View file

@ -372,7 +372,7 @@ CIFS_SessSetup(unsigned int xid, struct cifsSesInfo *ses, int first_time,
/* no capabilities flags in old lanman negotiation */
pSMB->old_req.PasswordLength = CIFS_SESS_KEY_SIZE;
pSMB->old_req.PasswordLength = cpu_to_le16(CIFS_SESS_KEY_SIZE);
/* BB calculate hash with password */
/* and copy into bcc */

1
fs/cifs/smberr.h
View file

@ -95,6 +95,7 @@
#define ERRinvlevel 124
#define ERRdirnotempty 145
#define ERRnotlocked 158
#define ERRcancelviolation 173
#define ERRalreadyexists 183
#define ERRbadpipe 230
#define ERRpipebusy 231

650
fs/cifs/transport.c
View file

@ -3,7 +3,8 @@
*
* Copyright (C) International Business Machines Corp., 2002,2005
* Author(s): Steve French (sfrench@us.ibm.com)
*
* Jeremy Allison (jra@samba.org) 2006.
*
* This library is free software; you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published
* by the Free Software Foundation; either version 2.1 of the License, or
@ -36,7 +37,7 @@ extern mempool_t *cifs_mid_poolp;
extern kmem_cache_t *cifs_oplock_cachep;
static struct mid_q_entry *
AllocMidQEntry(struct smb_hdr *smb_buffer, struct cifsSesInfo *ses)
AllocMidQEntry(const struct smb_hdr *smb_buffer, struct cifsSesInfo *ses)
{
struct mid_q_entry *temp;
@ -203,6 +204,10 @@ smb_send(struct socket *ssocket, struct smb_hdr *smb_buffer,
rc = 0;
}
/* Don't want to modify the buffer as a
side effect of this call. */
smb_buffer->smb_buf_length = smb_buf_length;
return rc;
}
@ -217,6 +222,7 @@ smb_send2(struct socket *ssocket, struct kvec *iov, int n_vec,
unsigned int len = iov[0].iov_len;
unsigned int total_len;
int first_vec = 0;
unsigned int smb_buf_length = smb_buffer->smb_buf_length;
if(ssocket == NULL)
return -ENOTSOCK; /* BB eventually add reconnect code here */
@ -293,9 +299,123 @@ smb_send2(struct socket *ssocket, struct kvec *iov, int n_vec,
} else
rc = 0;
/* Don't want to modify the buffer as a
side effect of this call. */
smb_buffer->smb_buf_length = smb_buf_length;
return rc;
}
static int wait_for_free_request(struct cifsSesInfo *ses, const int long_op)
{
if(long_op == -1) {
/* oplock breaks must not be held up */
atomic_inc(&ses->server->inFlight);
} else {
spin_lock(&GlobalMid_Lock);
while(1) {
if(atomic_read(&ses->server->inFlight) >=
cifs_max_pending){
spin_unlock(&GlobalMid_Lock);
#ifdef CONFIG_CIFS_STATS2
atomic_inc(&ses->server->num_waiters);
#endif
wait_event(ses->server->request_q,
atomic_read(&ses->server->inFlight)
< cifs_max_pending);
#ifdef CONFIG_CIFS_STATS2
atomic_dec(&ses->server->num_waiters);
#endif
spin_lock(&GlobalMid_Lock);
} else {
if(ses->server->tcpStatus == CifsExiting) {
spin_unlock(&GlobalMid_Lock);
return -ENOENT;
}
/* can not count locking commands against total since
they are allowed to block on server */
/* update # of requests on the wire to server */
if (long_op < 3)
atomic_inc(&ses->server->inFlight);
spin_unlock(&GlobalMid_Lock);
break;
}
}
}
return 0;
}
static int allocate_mid(struct cifsSesInfo *ses, struct smb_hdr *in_buf,
struct mid_q_entry **ppmidQ)
{
if (ses->server->tcpStatus == CifsExiting) {
return -ENOENT;
} else if (ses->server->tcpStatus == CifsNeedReconnect) {
cFYI(1,("tcp session dead - return to caller to retry"));
return -EAGAIN;
} else if (ses->status != CifsGood) {
/* check if SMB session is bad because we are setting it up */
if((in_buf->Command != SMB_COM_SESSION_SETUP_ANDX) &&
(in_buf->Command != SMB_COM_NEGOTIATE)) {
return -EAGAIN;
} /* else ok - we are setting up session */
}
*ppmidQ = AllocMidQEntry(in_buf, ses);
if (*ppmidQ == NULL) {
return -ENOMEM;
}
return 0;
}
static int wait_for_response(struct cifsSesInfo *ses,
struct mid_q_entry *midQ,
unsigned long timeout,
unsigned long time_to_wait)
{
unsigned long curr_timeout;
for (;;) {
curr_timeout = timeout + jiffies;
wait_event(ses->server->response_q,
(!(midQ->midState == MID_REQUEST_SUBMITTED)) ||
time_after(jiffies, curr_timeout) ||
((ses->server->tcpStatus != CifsGood) &&
(ses->server->tcpStatus != CifsNew)));
if (time_after(jiffies, curr_timeout) &&
(midQ->midState == MID_REQUEST_SUBMITTED) &&
((ses->server->tcpStatus == CifsGood) ||
(ses->server->tcpStatus == CifsNew))) {
unsigned long lrt;
/* We timed out. Is the server still
sending replies ? */
spin_lock(&GlobalMid_Lock);
lrt = ses->server->lstrp;
spin_unlock(&GlobalMid_Lock);
/* Calculate time_to_wait past last receive time.
Although we prefer not to time out if the
server is still responding - we will time
out if the server takes more than 15 (or 45
or 180) seconds to respond to this request
and has not responded to any request from
other threads on the client within 10 seconds */
lrt += time_to_wait;
if (time_after(jiffies, lrt)) {
/* No replies for time_to_wait. */
cERROR(1,("server not responding"));
return -1;
}
} else {
return 0;
}
}
}
int
SendReceive2(const unsigned int xid, struct cifsSesInfo *ses,
struct kvec *iov, int n_vec, int * pRespBufType /* ret */,
@ -323,75 +443,27 @@ SendReceive2(const unsigned int xid, struct cifsSesInfo *ses,
/* Ensure that we do not send more than 50 overlapping requests
to the same server. We may make this configurable later or
use ses->maxReq */
if(long_op == -1) {
/* oplock breaks must not be held up */
atomic_inc(&ses->server->inFlight);
} else {
spin_lock(&GlobalMid_Lock);
while(1) {
if(atomic_read(&ses->server->inFlight) >=
cifs_max_pending){
spin_unlock(&GlobalMid_Lock);
#ifdef CONFIG_CIFS_STATS2
atomic_inc(&ses->server->num_waiters);
#endif
wait_event(ses->server->request_q,
atomic_read(&ses->server->inFlight)
< cifs_max_pending);
#ifdef CONFIG_CIFS_STATS2
atomic_dec(&ses->server->num_waiters);
#endif
spin_lock(&GlobalMid_Lock);
} else {
if(ses->server->tcpStatus == CifsExiting) {
spin_unlock(&GlobalMid_Lock);
cifs_small_buf_release(in_buf);
return -ENOENT;
}
/* can not count locking commands against total since
they are allowed to block on server */
if(long_op < 3) {
/* update # of requests on the wire to server */
atomic_inc(&ses->server->inFlight);
}
spin_unlock(&GlobalMid_Lock);
break;
}
}
rc = wait_for_free_request(ses, long_op);
if (rc) {
cifs_small_buf_release(in_buf);
return rc;
}
/* make sure that we sign in the same order that we send on this socket
and avoid races inside tcp sendmsg code that could cause corruption
of smb data */
down(&ses->server->tcpSem);
if (ses->server->tcpStatus == CifsExiting) {
rc = -ENOENT;
goto out_unlock2;
} else if (ses->server->tcpStatus == CifsNeedReconnect) {
cFYI(1,("tcp session dead - return to caller to retry"));
rc = -EAGAIN;
goto out_unlock2;
} else if (ses->status != CifsGood) {
/* check if SMB session is bad because we are setting it up */
if((in_buf->Command != SMB_COM_SESSION_SETUP_ANDX) &&
(in_buf->Command != SMB_COM_NEGOTIATE)) {
rc = -EAGAIN;
goto out_unlock2;
} /* else ok - we are setting up session */
}
midQ = AllocMidQEntry(in_buf, ses);
if (midQ == NULL) {
rc = allocate_mid(ses, in_buf, &midQ);
if (rc) {
up(&ses->server->tcpSem);
cifs_small_buf_release(in_buf);
/* If not lock req, update # of requests on wire to server */
if(long_op < 3) {
atomic_dec(&ses->server->inFlight);
wake_up(&ses->server->request_q);
}
return -ENOMEM;
/* Update # of requests on wire to server */
atomic_dec(&ses->server->inFlight);
wake_up(&ses->server->request_q);
return rc;
}
rc = cifs_sign_smb2(iov, n_vec, ses->server, &midQ->sequence_number);
@ -406,32 +478,23 @@ SendReceive2(const unsigned int xid, struct cifsSesInfo *ses,
atomic_dec(&ses->server->inSend);
midQ->when_sent = jiffies;
#endif
if(rc < 0) {
DeleteMidQEntry(midQ);
up(&ses->server->tcpSem);
cifs_small_buf_release(in_buf);
/* If not lock req, update # of requests on wire to server */
if(long_op < 3) {
atomic_dec(&ses->server->inFlight);
wake_up(&ses->server->request_q);
}
return rc;
} else {
up(&ses->server->tcpSem);
cifs_small_buf_release(in_buf);
}
up(&ses->server->tcpSem);
cifs_small_buf_release(in_buf);
if(rc < 0)
goto out;
if (long_op == -1)
goto cifs_no_response_exit2;
goto out;
else if (long_op == 2) /* writes past end of file can take loong time */
timeout = 180 * HZ;
else if (long_op == 1)
timeout = 45 * HZ; /* should be greater than
servers oplock break timeout (about 43 seconds) */
else if (long_op > 2) {
timeout = MAX_SCHEDULE_TIMEOUT;
} else
else
timeout = 15 * HZ;
/* wait for 15 seconds or until woken up due to response arriving or
due to last connection to this server being unmounted */
if (signal_pending(current)) {
@ -441,19 +504,7 @@ SendReceive2(const unsigned int xid, struct cifsSesInfo *ses,
}
/* No user interrupts in wait - wreaks havoc with performance */
if(timeout != MAX_SCHEDULE_TIMEOUT) {
timeout += jiffies;
wait_event(ses->server->response_q,
(!(midQ->midState & MID_REQUEST_SUBMITTED)) ||
time_after(jiffies, timeout) ||
((ses->server->tcpStatus != CifsGood) &&
(ses->server->tcpStatus != CifsNew)));
} else {
wait_event(ses->server->response_q,
(!(midQ->midState & MID_REQUEST_SUBMITTED)) ||
((ses->server->tcpStatus != CifsGood) &&
(ses->server->tcpStatus != CifsNew)));
}
wait_for_response(ses, midQ, timeout, 10 * HZ);
spin_lock(&GlobalMid_Lock);
if (midQ->resp_buf) {
@ -481,11 +532,9 @@ SendReceive2(const unsigned int xid, struct cifsSesInfo *ses,
}
spin_unlock(&GlobalMid_Lock);
DeleteMidQEntry(midQ);
/* If not lock req, update # of requests on wire to server */
if(long_op < 3) {
atomic_dec(&ses->server->inFlight);
wake_up(&ses->server->request_q);
}
/* Update # of requests on wire to server */
atomic_dec(&ses->server->inFlight);
wake_up(&ses->server->request_q);
return rc;
}
@ -536,24 +585,12 @@ SendReceive2(const unsigned int xid, struct cifsSesInfo *ses,
cFYI(1,("Bad MID state?"));
}
}
cifs_no_response_exit2:
out:
DeleteMidQEntry(midQ);
if(long_op < 3) {
atomic_dec(&ses->server->inFlight);
wake_up(&ses->server->request_q);
}
return rc;
out_unlock2:
up(&ses->server->tcpSem);
cifs_small_buf_release(in_buf);
/* If not lock req, update # of requests on wire to server */
if(long_op < 3) {
atomic_dec(&ses->server->inFlight);
wake_up(&ses->server->request_q);
}
atomic_dec(&ses->server->inFlight);
wake_up(&ses->server->request_q);
return rc;
}
@ -583,85 +620,34 @@ SendReceive(const unsigned int xid, struct cifsSesInfo *ses,
/* Ensure that we do not send more than 50 overlapping requests
to the same server. We may make this configurable later or
use ses->maxReq */
if(long_op == -1) {
/* oplock breaks must not be held up */
atomic_inc(&ses->server->inFlight);
} else {
spin_lock(&GlobalMid_Lock);
while(1) {
if(atomic_read(&ses->server->inFlight) >=
cifs_max_pending){
spin_unlock(&GlobalMid_Lock);
#ifdef CONFIG_CIFS_STATS2
atomic_inc(&ses->server->num_waiters);
#endif
wait_event(ses->server->request_q,
atomic_read(&ses->server->inFlight)
< cifs_max_pending);
#ifdef CONFIG_CIFS_STATS2
atomic_dec(&ses->server->num_waiters);
#endif
spin_lock(&GlobalMid_Lock);
} else {
if(ses->server->tcpStatus == CifsExiting) {
spin_unlock(&GlobalMid_Lock);
return -ENOENT;
}
/* can not count locking commands against total since
they are allowed to block on server */
if(long_op < 3) {
/* update # of requests on the wire to server */
atomic_inc(&ses->server->inFlight);
}
spin_unlock(&GlobalMid_Lock);
break;
}
}
}
rc = wait_for_free_request(ses, long_op);
if (rc)
return rc;
/* make sure that we sign in the same order that we send on this socket
and avoid races inside tcp sendmsg code that could cause corruption
of smb data */
down(&ses->server->tcpSem);
if (ses->server->tcpStatus == CifsExiting) {
rc = -ENOENT;
goto out_unlock;
} else if (ses->server->tcpStatus == CifsNeedReconnect) {
cFYI(1,("tcp session dead - return to caller to retry"));
rc = -EAGAIN;
goto out_unlock;
} else if (ses->status != CifsGood) {
/* check if SMB session is bad because we are setting it up */
if((in_buf->Command != SMB_COM_SESSION_SETUP_ANDX) &&
(in_buf->Command != SMB_COM_NEGOTIATE)) {
rc = -EAGAIN;
goto out_unlock;
} /* else ok - we are setting up session */
}
midQ = AllocMidQEntry(in_buf, ses);
if (midQ == NULL) {
rc = allocate_mid(ses, in_buf, &midQ);
if (rc) {
up(&ses->server->tcpSem);
/* If not lock req, update # of requests on wire to server */
if(long_op < 3) {
atomic_dec(&ses->server->inFlight);
wake_up(&ses->server->request_q);
}
return -ENOMEM;
/* Update # of requests on wire to server */
atomic_dec(&ses->server->inFlight);
wake_up(&ses->server->request_q);
return rc;
}
if (in_buf->smb_buf_length > CIFSMaxBufSize + MAX_CIFS_HDR_SIZE - 4) {
up(&ses->server->tcpSem);
cERROR(1, ("Illegal length, greater than maximum frame, %d",
in_buf->smb_buf_length));
DeleteMidQEntry(midQ);
/* If not lock req, update # of requests on wire to server */
if(long_op < 3) {
atomic_dec(&ses->server->inFlight);
wake_up(&ses->server->request_q);
}
up(&ses->server->tcpSem);
/* Update # of requests on wire to server */
atomic_dec(&ses->server->inFlight);
wake_up(&ses->server->request_q);
return -EIO;
}
@ -677,27 +663,19 @@ SendReceive(const unsigned int xid, struct cifsSesInfo *ses,
atomic_dec(&ses->server->inSend);
midQ->when_sent = jiffies;
#endif
if(rc < 0) {
DeleteMidQEntry(midQ);
up(&ses->server->tcpSem);
/* If not lock req, update # of requests on wire to server */
if(long_op < 3) {
atomic_dec(&ses->server->inFlight);
wake_up(&ses->server->request_q);
}
return rc;
} else
up(&ses->server->tcpSem);
up(&ses->server->tcpSem);
if(rc < 0)
goto out;
if (long_op == -1)
goto cifs_no_response_exit;
goto out;
else if (long_op == 2) /* writes past end of file can take loong time */
timeout = 180 * HZ;
else if (long_op == 1)
timeout = 45 * HZ; /* should be greater than
servers oplock break timeout (about 43 seconds) */
else if (long_op > 2) {
timeout = MAX_SCHEDULE_TIMEOUT;
} else
else
timeout = 15 * HZ;
/* wait for 15 seconds or until woken up due to response arriving or
due to last connection to this server being unmounted */
@ -708,19 +686,7 @@ SendReceive(const unsigned int xid, struct cifsSesInfo *ses,
}
/* No user interrupts in wait - wreaks havoc with performance */
if(timeout != MAX_SCHEDULE_TIMEOUT) {
timeout += jiffies;
wait_event(ses->server->response_q,
(!(midQ->midState & MID_REQUEST_SUBMITTED)) ||
time_after(jiffies, timeout) ||
((ses->server->tcpStatus != CifsGood) &&
(ses->server->tcpStatus != CifsNew)));
} else {
wait_event(ses->server->response_q,
(!(midQ->midState & MID_REQUEST_SUBMITTED)) ||
((ses->server->tcpStatus != CifsGood) &&
(ses->server->tcpStatus != CifsNew)));
}
wait_for_response(ses, midQ, timeout, 10 * HZ);
spin_lock(&GlobalMid_Lock);
if (midQ->resp_buf) {
@ -748,11 +714,9 @@ SendReceive(const unsigned int xid, struct cifsSesInfo *ses,
}
spin_unlock(&GlobalMid_Lock);
DeleteMidQEntry(midQ);
/* If not lock req, update # of requests on wire to server */
if(long_op < 3) {
atomic_dec(&ses->server->inFlight);
wake_up(&ses->server->request_q);
}
/* Update # of requests on wire to server */
atomic_dec(&ses->server->inFlight);
wake_up(&ses->server->request_q);
return rc;
}
@ -799,23 +763,253 @@ SendReceive(const unsigned int xid, struct cifsSesInfo *ses,
cERROR(1,("Bad MID state?"));
}
}
cifs_no_response_exit:
out:
DeleteMidQEntry(midQ);
if(long_op < 3) {
atomic_dec(&ses->server->inFlight);
wake_up(&ses->server->request_q);
}
return rc;
out_unlock:
up(&ses->server->tcpSem);
/* If not lock req, update # of requests on wire to server */
if(long_op < 3) {
atomic_dec(&ses->server->inFlight);
wake_up(&ses->server->request_q);
}
atomic_dec(&ses->server->inFlight);
wake_up(&ses->server->request_q);
return rc;
}
/* Send an NT_CANCEL SMB to cause the POSIX blocking lock to return. */
static int
send_nt_cancel(struct cifsTconInfo *tcon, struct smb_hdr *in_buf,
struct mid_q_entry *midQ)
{
int rc = 0;
struct cifsSesInfo *ses = tcon->ses;
__u16 mid = in_buf->Mid;
header_assemble(in_buf, SMB_COM_NT_CANCEL, tcon, 0);
in_buf->Mid = mid;
down(&ses->server->tcpSem);
rc = cifs_sign_smb(in_buf, ses->server, &midQ->sequence_number);
if (rc) {
up(&ses->server->tcpSem);
return rc;
}
rc = smb_send(ses->server->ssocket, in_buf, in_buf->smb_buf_length,
(struct sockaddr *) &(ses->server->addr.sockAddr));
up(&ses->server->tcpSem);
return rc;
}
/* We send a LOCKINGX_CANCEL_LOCK to cause the Windows
blocking lock to return. */
static int
send_lock_cancel(const unsigned int xid, struct cifsTconInfo *tcon,
struct smb_hdr *in_buf,
struct smb_hdr *out_buf)
{
int bytes_returned;
struct cifsSesInfo *ses = tcon->ses;
LOCK_REQ *pSMB = (LOCK_REQ *)in_buf;
/* We just modify the current in_buf to change
the type of lock from LOCKING_ANDX_SHARED_LOCK
or LOCKING_ANDX_EXCLUSIVE_LOCK to
LOCKING_ANDX_CANCEL_LOCK. */
pSMB->LockType = LOCKING_ANDX_CANCEL_LOCK|LOCKING_ANDX_LARGE_FILES;
pSMB->Timeout = 0;
pSMB->hdr.Mid = GetNextMid(ses->server);
return SendReceive(xid, ses, in_buf, out_buf,
&bytes_returned, 0);
}
int
SendReceiveBlockingLock(const unsigned int xid, struct cifsTconInfo *tcon,
struct smb_hdr *in_buf, struct smb_hdr *out_buf,
int *pbytes_returned)
{
int rc = 0;
int rstart = 0;
unsigned int receive_len;
struct mid_q_entry *midQ;
struct cifsSesInfo *ses;
if (tcon == NULL || tcon->ses == NULL) {
cERROR(1,("Null smb session"));
return -EIO;
}
ses = tcon->ses;
if(ses->server == NULL) {
cERROR(1,("Null tcp session"));
return -EIO;
}
if(ses->server->tcpStatus == CifsExiting)
return -ENOENT;
/* Ensure that we do not send more than 50 overlapping requests
to the same server. We may make this configurable later or
use ses->maxReq */
rc = wait_for_free_request(ses, 3);
if (rc)
return rc;
/* make sure that we sign in the same order that we send on this socket
and avoid races inside tcp sendmsg code that could cause corruption
of smb data */
down(&ses->server->tcpSem);
rc = allocate_mid(ses, in_buf, &midQ);
if (rc) {
up(&ses->server->tcpSem);
return rc;
}
if (in_buf->smb_buf_length > CIFSMaxBufSize + MAX_CIFS_HDR_SIZE - 4) {
up(&ses->server->tcpSem);
cERROR(1, ("Illegal length, greater than maximum frame, %d",
in_buf->smb_buf_length));
DeleteMidQEntry(midQ);
return -EIO;
}
rc = cifs_sign_smb(in_buf, ses->server, &midQ->sequence_number);
midQ->midState = MID_REQUEST_SUBMITTED;
#ifdef CONFIG_CIFS_STATS2
atomic_inc(&ses->server->inSend);
#endif
rc = smb_send(ses->server->ssocket, in_buf, in_buf->smb_buf_length,
(struct sockaddr *) &(ses->server->addr.sockAddr));
#ifdef CONFIG_CIFS_STATS2
atomic_dec(&ses->server->inSend);
midQ->when_sent = jiffies;
#endif
up(&ses->server->tcpSem);
if(rc < 0) {
DeleteMidQEntry(midQ);
return rc;
}
/* Wait for a reply - allow signals to interrupt. */
rc = wait_event_interruptible(ses->server->response_q,
(!(midQ->midState == MID_REQUEST_SUBMITTED)) ||
((ses->server->tcpStatus != CifsGood) &&
(ses->server->tcpStatus != CifsNew)));
/* Were we interrupted by a signal ? */
if ((rc == -ERESTARTSYS) &&
(midQ->midState == MID_REQUEST_SUBMITTED) &&
((ses->server->tcpStatus == CifsGood) ||
(ses->server->tcpStatus == CifsNew))) {
if (in_buf->Command == SMB_COM_TRANSACTION2) {
/* POSIX lock. We send a NT_CANCEL SMB to cause the
blocking lock to return. */
rc = send_nt_cancel(tcon, in_buf, midQ);
if (rc) {
DeleteMidQEntry(midQ);
return rc;
}
} else {
/* Windows lock. We send a LOCKINGX_CANCEL_LOCK
to cause the blocking lock to return. */
rc = send_lock_cancel(xid, tcon, in_buf, out_buf);
/* If we get -ENOLCK back the lock may have
already been removed. Don't exit in this case. */
if (rc && rc != -ENOLCK) {
DeleteMidQEntry(midQ);
return rc;
}
}
/* Wait 5 seconds for the response. */
if (wait_for_response(ses, midQ, 5 * HZ, 5 * HZ)==0) {
/* We got the response - restart system call. */
rstart = 1;
}
}
spin_lock(&GlobalMid_Lock);
if (midQ->resp_buf) {
spin_unlock(&GlobalMid_Lock);
receive_len = midQ->resp_buf->smb_buf_length;
} else {
cERROR(1,("No response for cmd %d mid %d",
midQ->command, midQ->mid));
if(midQ->midState == MID_REQUEST_SUBMITTED) {
if(ses->server->tcpStatus == CifsExiting)
rc = -EHOSTDOWN;
else {
ses->server->tcpStatus = CifsNeedReconnect;
midQ->midState = MID_RETRY_NEEDED;
}
}
if (rc != -EHOSTDOWN) {
if(midQ->midState == MID_RETRY_NEEDED) {
rc = -EAGAIN;
cFYI(1,("marking request for retry"));
} else {
rc = -EIO;
}
}
spin_unlock(&GlobalMid_Lock);
DeleteMidQEntry(midQ);
return rc;
}
if (receive_len > CIFSMaxBufSize + MAX_CIFS_HDR_SIZE) {
cERROR(1, ("Frame too large received. Length: %d Xid: %d",
receive_len, xid));
rc = -EIO;
} else { /* rcvd frame is ok */
if (midQ->resp_buf && out_buf
&& (midQ->midState == MID_RESPONSE_RECEIVED)) {
out_buf->smb_buf_length = receive_len;
memcpy((char *)out_buf + 4,
(char *)midQ->resp_buf + 4,
receive_len);
dump_smb(out_buf, 92);
/* convert the length into a more usable form */
if((receive_len > 24) &&
(ses->server->secMode & (SECMODE_SIGN_REQUIRED |
SECMODE_SIGN_ENABLED))) {
rc = cifs_verify_signature(out_buf,
ses->server->mac_signing_key,
midQ->sequence_number+1);
if(rc) {
cERROR(1,("Unexpected SMB signature"));
/* BB FIXME add code to kill session */
}
}
*pbytes_returned = out_buf->smb_buf_length;
/* BB special case reconnect tid and uid here? */
rc = map_smb_to_linux_error(out_buf);
/* convert ByteCount if necessary */
if (receive_len >=
sizeof (struct smb_hdr) -
4 /* do not count RFC1001 header */ +
(2 * out_buf->WordCount) + 2 /* bcc */ )
BCC(out_buf) = le16_to_cpu(BCC_LE(out_buf));
} else {
rc = -EIO;
cERROR(1,("Bad MID state?"));
}
}
DeleteMidQEntry(midQ);
if (rstart && rc == -EACCES)
return -ERESTARTSYS;
return rc;
}

6
fs/cifs/xattr.c
View file

@ -330,11 +330,15 @@ ssize_t cifs_listxattr(struct dentry * direntry, char * data, size_t buf_size)
sb = direntry->d_inode->i_sb;
if(sb == NULL)
return -EIO;
xid = GetXid();
cifs_sb = CIFS_SB(sb);
pTcon = cifs_sb->tcon;
if(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_XATTR)
return -EOPNOTSUPP;
xid = GetXid();
full_path = build_path_from_dentry(direntry);
if(full_path == NULL) {
FreeXid(xid);

4
fs/coda/file.c
View file

@ -136,10 +136,8 @@ int coda_open(struct inode *coda_inode, struct file *coda_file)
coda_vfs_stat.open++;
cfi = kmalloc(sizeof(struct coda_file_info), GFP_KERNEL);
if (!cfi) {
unlock_kernel();
if (!cfi)
return -ENOMEM;
}
lock_kernel();

3
fs/efs/symlink.c
View file

@ -22,7 +22,7 @@ static int efs_symlink_readpage(struct file *file, struct page *page)
err = -ENAMETOOLONG;
if (size > 2 * EFS_BLOCKSIZE)
goto fail;
goto fail_notlocked;
lock_kernel();
/* read first 512 bytes of link target */
@ -47,6 +47,7 @@ static int efs_symlink_readpage(struct file *file, struct page *page)
return 0;
fail:
unlock_kernel();
fail_notlocked:
SetPageError(page);
kunmap(page);
unlock_page(page);

4
fs/eventpoll.c
View file

@ -1168,7 +1168,7 @@ static int ep_unlink(struct eventpoll *ep, struct epitem *epi)
eexit_1:
DNPRINTK(3, (KERN_INFO "[%p] eventpoll: ep_unlink(%p, %p) = %d\n",
current, ep, epi->file, error));
current, ep, epi->ffd.file, error));
return error;
}
@ -1236,7 +1236,7 @@ static int ep_poll_callback(wait_queue_t *wait, unsigned mode, int sync, void *k
struct eventpoll *ep = epi->ep;
DNPRINTK(3, (KERN_INFO "[%p] eventpoll: poll_callback(%p) epi=%p ep=%p\n",
current, epi->file, epi, ep));
current, epi->ffd.file, epi, ep));
write_lock_irqsave(&ep->lock, flags);

10
fs/exec.c
View file

@ -486,8 +486,6 @@ struct file *open_exec(const char *name)
if (!(nd.mnt->mnt_flags & MNT_NOEXEC) &&
S_ISREG(inode->i_mode)) {
int err = vfs_permission(&nd, MAY_EXEC);
if (!err && !(inode->i_mode & 0111))
err = -EACCES;
file = ERR_PTR(err);
if (!err) {
file = nameidata_to_filp(&nd, O_RDONLY);
@ -753,7 +751,7 @@ no_thread_group:
write_lock_irq(&tasklist_lock);
spin_lock(&oldsighand->siglock);
spin_lock(&newsighand->siglock);
spin_lock_nested(&newsighand->siglock, SINGLE_DEPTH_NESTING);
rcu_assign_pointer(current->sighand, newsighand);
recalc_sigpending();
@ -922,12 +920,6 @@ int prepare_binprm(struct linux_binprm *bprm)
int retval;
mode = inode->i_mode;
/*
* Check execute perms again - if the caller has CAP_DAC_OVERRIDE,
* generic_permission lets a non-executable through
*/
if (!(mode & 0111)) /* with at least _one_ execute bit set */
return -EACCES;
if (bprm->file->f_op == NULL)
return -EACCES;

2
fs/ext2/super.c
View file

@ -775,7 +775,7 @@ static int ext2_fill_super(struct super_block *sb, void *data, int silent)
if (EXT2_INODE_SIZE(sb) == 0)
goto cantfind_ext2;
sbi->s_inodes_per_block = sb->s_blocksize / EXT2_INODE_SIZE(sb);
if (sbi->s_inodes_per_block == 0)
if (sbi->s_inodes_per_block == 0 || sbi->s_inodes_per_group == 0)
goto cantfind_ext2;
sbi->s_itb_per_group = sbi->s_inodes_per_group /
sbi->s_inodes_per_block;

3
fs/ext3/acl.h
View file

@ -62,9 +62,6 @@ extern int ext3_permission (struct inode *, int, struct nameidata *);
extern int ext3_acl_chmod (struct inode *);
extern int ext3_init_acl (handle_t *, struct inode *, struct inode *);
extern int init_ext3_acl(void);
extern void exit_ext3_acl(void);
#else /* CONFIG_EXT3_FS_POSIX_ACL */
#include <linux/sched.h>
#define ext3_permission NULL

6
fs/ext3/balloc.c
View file

@ -1269,12 +1269,12 @@ ext3_fsblk_t ext3_new_blocks(handle_t *handle, struct inode *inode,
goal = le32_to_cpu(es->s_first_data_block);
group_no = (goal - le32_to_cpu(es->s_first_data_block)) /
EXT3_BLOCKS_PER_GROUP(sb);
goal_group = group_no;
retry_alloc:
gdp = ext3_get_group_desc(sb, group_no, &gdp_bh);
if (!gdp)
goto io_error;
goal_group = group_no;
retry:
free_blocks = le16_to_cpu(gdp->bg_free_blocks_count);
/*
* if there is not enough free blocks to make a new resevation
@ -1349,7 +1349,7 @@ retry:
if (my_rsv) {
my_rsv = NULL;
group_no = goal_group;
goto retry;
goto retry_alloc;
}
/* No space left on the device */
*errp = -ENOSPC;

19
fs/ext3/inode.c
View file

@ -1158,7 +1158,7 @@ retry:
ret = PTR_ERR(handle);
goto out;
}
if (test_opt(inode->i_sb, NOBH))
if (test_opt(inode->i_sb, NOBH) && ext3_should_writeback_data(inode))
ret = nobh_prepare_write(page, from, to, ext3_get_block);
else
ret = block_prepare_write(page, from, to, ext3_get_block);
@ -1244,7 +1244,7 @@ static int ext3_writeback_commit_write(struct file *file, struct page *page,
if (new_i_size > EXT3_I(inode)->i_disksize)
EXT3_I(inode)->i_disksize = new_i_size;
if (test_opt(inode->i_sb, NOBH))
if (test_opt(inode->i_sb, NOBH) && ext3_should_writeback_data(inode))
ret = nobh_commit_write(file, page, from, to);
else
ret = generic_commit_write(file, page, from, to);
@ -1494,7 +1494,7 @@ static int ext3_writeback_writepage(struct page *page,
goto out_fail;
}
if (test_opt(inode->i_sb, NOBH))
if (test_opt(inode->i_sb, NOBH) && ext3_should_writeback_data(inode))
ret = nobh_writepage(page, ext3_get_block, wbc);
else
ret = block_write_full_page(page, ext3_get_block, wbc);
@ -2402,14 +2402,15 @@ static ext3_fsblk_t ext3_get_inode_block(struct super_block *sb,
struct buffer_head *bh;
struct ext3_group_desc * gdp;
if ((ino != EXT3_ROOT_INO && ino != EXT3_JOURNAL_INO &&
ino != EXT3_RESIZE_INO && ino < EXT3_FIRST_INO(sb)) ||
ino > le32_to_cpu(EXT3_SB(sb)->s_es->s_inodes_count)) {
ext3_error(sb, "ext3_get_inode_block",
"bad inode number: %lu", ino);
if (!ext3_valid_inum(sb, ino)) {
/*
* This error is already checked for in namei.c unless we are
* looking at an NFS filehandle, in which case no error
* report is needed
*/
return 0;
}
block_group = (ino - 1) / EXT3_INODES_PER_GROUP(sb);
if (block_group >= EXT3_SB(sb)->s_groups_count) {
ext3_error(sb,"ext3_get_inode_block","group >= groups count");

15
fs/ext3/namei.c
View file

@ -1000,7 +1000,12 @@ static struct dentry *ext3_lookup(struct inode * dir, struct dentry *dentry, str
if (bh) {
unsigned long ino = le32_to_cpu(de->inode);
brelse (bh);
inode = iget(dir->i_sb, ino);
if (!ext3_valid_inum(dir->i_sb, ino)) {
ext3_error(dir->i_sb, "ext3_lookup",
"bad inode number: %lu", ino);
inode = NULL;
} else
inode = iget(dir->i_sb, ino);
if (!inode)
return ERR_PTR(-EACCES);
@ -1028,7 +1033,13 @@ struct dentry *ext3_get_parent(struct dentry *child)
return ERR_PTR(-ENOENT);
ino = le32_to_cpu(de->inode);
brelse(bh);
inode = iget(child->d_inode->i_sb, ino);
if (!ext3_valid_inum(child->d_inode->i_sb, ino)) {
ext3_error(child->d_inode->i_sb, "ext3_get_parent",
"bad inode number: %lu", ino);
inode = NULL;
} else
inode = iget(child->d_inode->i_sb, ino);
if (!inode)
return ERR_PTR(-EACCES);

14
fs/file.c
View file

@ -240,13 +240,9 @@ static struct fdtable *alloc_fdtable(int nr)
if (!fdt)
goto out;
nfds = 8 * L1_CACHE_BYTES;
/* Expand to the max in easy steps */
while (nfds <= nr) {
nfds = nfds * 2;
if (nfds > NR_OPEN)
nfds = NR_OPEN;
}
nfds = max_t(int, 8 * L1_CACHE_BYTES, roundup_pow_of_two(nr + 1));
if (nfds > NR_OPEN)
nfds = NR_OPEN;
new_openset = alloc_fdset(nfds);
new_execset = alloc_fdset(nfds);
@ -277,11 +273,13 @@ static struct fdtable *alloc_fdtable(int nr)
} while (nfds <= nr);
new_fds = alloc_fd_array(nfds);
if (!new_fds)
goto out;
goto out2;
fdt->fd = new_fds;
fdt->max_fds = nfds;
fdt->free_files = NULL;
return fdt;
out2:
nfds = fdt->max_fdset;
out:
if (new_openset)
free_fdset(new_openset, nfds);

2
fs/freevxfs/vxfs_lookup.c
View file

@ -246,6 +246,8 @@ vxfs_readdir(struct file *fp, void *retp, filldir_t filler)
u_long page, npages, block, pblocks, nblocks, offset;
loff_t pos;
lock_kernel();
switch ((long)fp->f_pos) {
case 0:
if (filler(retp, ".", 1, fp->f_pos, ip->i_ino, DT_DIR) < 0)

4
fs/fuse/control.c
View file

@ -105,7 +105,7 @@ static struct dentry *fuse_ctl_add_dentry(struct dentry *parent,
/*
* Add a connection to the control filesystem (if it exists). Caller
* must host fuse_mutex
* must hold fuse_mutex
*/
int fuse_ctl_add_conn(struct fuse_conn *fc)
{
@ -139,7 +139,7 @@ int fuse_ctl_add_conn(struct fuse_conn *fc)
/*
* Remove a connection from the control filesystem (if it exists).
* Caller must host fuse_mutex
* Caller must hold fuse_mutex
*/
void fuse_ctl_remove_conn(struct fuse_conn *fc)
{

47
fs/fuse/dir.c
View file

@ -14,6 +14,33 @@
#include <linux/sched.h>
#include <linux/namei.h>
#if BITS_PER_LONG >= 64
static inline void fuse_dentry_settime(struct dentry *entry, u64 time)
{
entry->d_time = time;
}
static inline u64 fuse_dentry_time(struct dentry *entry)
{
return entry->d_time;
}
#else
/*
* On 32 bit archs store the high 32 bits of time in d_fsdata
*/
static void fuse_dentry_settime(struct dentry *entry, u64 time)
{
entry->d_time = time;
entry->d_fsdata = (void *) (unsigned long) (time >> 32);
}
static u64 fuse_dentry_time(struct dentry *entry)
{
return (u64) entry->d_time +
((u64) (unsigned long) entry->d_fsdata << 32);
}
#endif
/*
* FUSE caches dentries and attributes with separate timeout. The
* time in jiffies until the dentry/attributes are valid is stored in
@ -23,10 +50,13 @@
/*
* Calculate the time in jiffies until a dentry/attributes are valid
*/
static unsigned long time_to_jiffies(unsigned long sec, unsigned long nsec)
static u64 time_to_jiffies(unsigned long sec, unsigned long nsec)
{
struct timespec ts = {sec, nsec};
return jiffies + timespec_to_jiffies(&ts);
if (sec || nsec) {
struct timespec ts = {sec, nsec};
return get_jiffies_64() + timespec_to_jiffies(&ts);
} else
return 0;
}
/*
@ -35,7 +65,8 @@ static unsigned long time_to_jiffies(unsigned long sec, unsigned long nsec)
*/
static void fuse_change_timeout(struct dentry *entry, struct fuse_entry_out *o)
{
entry->d_time = time_to_jiffies(o->entry_valid, o->entry_valid_nsec);
fuse_dentry_settime(entry,
time_to_jiffies(o->entry_valid, o->entry_valid_nsec));
if (entry->d_inode)
get_fuse_inode(entry->d_inode)->i_time =
time_to_jiffies(o->attr_valid, o->attr_valid_nsec);
@ -47,7 +78,7 @@ static void fuse_change_timeout(struct dentry *entry, struct fuse_entry_out *o)
*/
void fuse_invalidate_attr(struct inode *inode)
{
get_fuse_inode(inode)->i_time = jiffies - 1;
get_fuse_inode(inode)->i_time = 0;
}
/*
@ -60,7 +91,7 @@ void fuse_invalidate_attr(struct inode *inode)
*/
static void fuse_invalidate_entry_cache(struct dentry *entry)
{
entry->d_time = jiffies - 1;
fuse_dentry_settime(entry, 0);
}
/*
@ -102,7 +133,7 @@ static int fuse_dentry_revalidate(struct dentry *entry, struct nameidata *nd)
if (inode && is_bad_inode(inode))
return 0;
else if (time_after(jiffies, entry->d_time)) {
else if (fuse_dentry_time(entry) < get_jiffies_64()) {
int err;
struct fuse_entry_out outarg;
struct fuse_conn *fc;
@ -666,7 +697,7 @@ static int fuse_revalidate(struct dentry *entry)
if (!fuse_allow_task(fc, current))
return -EACCES;
if (get_node_id(inode) != FUSE_ROOT_ID &&
time_before_eq(jiffies, fi->i_time))
fi->i_time >= get_jiffies_64())
return 0;
return fuse_do_getattr(inode);

10
fs/fuse/file.c
View file

@ -395,14 +395,16 @@ static int fuse_readpages(struct file *file, struct address_space *mapping,
struct fuse_readpages_data data;
int err;
err = -EIO;
if (is_bad_inode(inode))
return -EIO;
goto clean_pages_up;
data.file = file;
data.inode = inode;
data.req = fuse_get_req(fc);
err = PTR_ERR(data.req);
if (IS_ERR(data.req))
return PTR_ERR(data.req);
goto clean_pages_up;
err = read_cache_pages(mapping, pages, fuse_readpages_fill, &data);
if (!err) {
@ -412,6 +414,10 @@ static int fuse_readpages(struct file *file, struct address_space *mapping,
fuse_put_request(fc, data.req);
}
return err;
clean_pages_up:
put_pages_list(pages);
return err;
}
static size_t fuse_send_write(struct fuse_req *req, struct file *file,

2
fs/fuse/fuse_i.h
View file

@ -59,7 +59,7 @@ struct fuse_inode {
struct fuse_req *forget_req;
/** Time in jiffies until the file attributes are valid */
unsigned long i_time;
u64 i_time;
};
/** FUSE specific file data */

2
fs/fuse/inode.c
View file

@ -51,7 +51,7 @@ static struct inode *fuse_alloc_inode(struct super_block *sb)
return NULL;
fi = get_fuse_inode(inode);
fi->i_time = jiffies - 1;
fi->i_time = 0;
fi->nodeid = 0;
fi->nlookup = 0;
fi->forget_req = fuse_request_alloc();

4
fs/hugetlbfs/inode.c
View file

@ -83,8 +83,6 @@ static int hugetlbfs_file_mmap(struct file *file, struct vm_area_struct *vma)
ret = -ENOMEM;
len = vma_len + ((loff_t)vma->vm_pgoff << PAGE_SHIFT);
if (!(vma->vm_flags & VM_WRITE) && len > inode->i_size)
goto out;
if (vma->vm_flags & VM_MAYSHARE &&
hugetlb_reserve_pages(inode, vma->vm_pgoff >> (HPAGE_SHIFT-PAGE_SHIFT),
@ -93,7 +91,7 @@ static int hugetlbfs_file_mmap(struct file *file, struct vm_area_struct *vma)
ret = 0;
hugetlb_prefault_arch_hook(vma->vm_mm);
if (inode->i_size < len)
if (vma->vm_flags & VM_WRITE && inode->i_size < len)
inode->i_size = len;
out:
mutex_unlock(&inode->i_mutex);

2
fs/inotify_user.c
View file

@ -187,7 +187,7 @@ static struct inotify_kernel_event * kernel_event(s32 wd, u32 mask, u32 cookie,
{
struct inotify_kernel_event *kevent;
kevent = kmem_cache_alloc(event_cachep, GFP_KERNEL);
kevent = kmem_cache_alloc(event_cachep, GFP_NOFS);
if (unlikely(!kevent))
return NULL;

30
fs/ioprio.c
View file

@ -44,6 +44,9 @@ static int set_task_ioprio(struct task_struct *task, int ioprio)
task->ioprio = ioprio;
ioc = task->io_context;
/* see wmb() in current_io_context() */
smp_read_barrier_depends();
if (ioc && ioc->set_ioprio)
ioc->set_ioprio(ioc, ioprio);
@ -111,9 +114,9 @@ asmlinkage long sys_ioprio_set(int which, int who, int ioprio)
continue;
ret = set_task_ioprio(p, ioprio);
if (ret)
break;
goto free_uid;
} while_each_thread(g, p);
free_uid:
if (who)
free_uid(user);
break;
@ -137,6 +140,29 @@ out:
return ret;
}
int ioprio_best(unsigned short aprio, unsigned short bprio)
{
unsigned short aclass = IOPRIO_PRIO_CLASS(aprio);
unsigned short bclass = IOPRIO_PRIO_CLASS(bprio);
if (!ioprio_valid(aprio))
return bprio;
if (!ioprio_valid(bprio))
return aprio;
if (aclass == IOPRIO_CLASS_NONE)
aclass = IOPRIO_CLASS_BE;
if (bclass == IOPRIO_CLASS_NONE)
bclass = IOPRIO_CLASS_BE;
if (aclass == bclass)
return min(aprio, bprio);
if (aclass > bclass)
return bprio;
else
return aprio;
}
asmlinkage long sys_ioprio_get(int which, int who)
{
struct task_struct *g, *p;

6
fs/jbd/commit.c
View file

@ -261,7 +261,7 @@ void journal_commit_transaction(journal_t *journal)
struct buffer_head *bh = jh2bh(jh);
jbd_lock_bh_state(bh);
kfree(jh->b_committed_data);
jbd_slab_free(jh->b_committed_data, bh->b_size);
jh->b_committed_data = NULL;
jbd_unlock_bh_state(bh);
}
@ -745,14 +745,14 @@ restart_loop:
* Otherwise, we can just throw away the frozen data now.
*/
if (jh->b_committed_data) {
kfree(jh->b_committed_data);
jbd_slab_free(jh->b_committed_data, bh->b_size);
jh->b_committed_data = NULL;
if (jh->b_frozen_data) {
jh->b_committed_data = jh->b_frozen_data;
jh->b_frozen_data = NULL;
}
} else if (jh->b_frozen_data) {
kfree(jh->b_frozen_data);
jbd_slab_free(jh->b_frozen_data, bh->b_size);
jh->b_frozen_data = NULL;
}

92
fs/jbd/journal.c
View file

@ -84,6 +84,7 @@ EXPORT_SYMBOL(journal_force_commit);
static int journal_convert_superblock_v1(journal_t *, journal_superblock_t *);
static void __journal_abort_soft (journal_t *journal, int errno);
static int journal_create_jbd_slab(size_t slab_size);
/*
* Helper function used to manage commit timeouts
@ -328,10 +329,10 @@ repeat:
char *tmp;
jbd_unlock_bh_state(bh_in);
tmp = jbd_rep_kmalloc(bh_in->b_size, GFP_NOFS);
tmp = jbd_slab_alloc(bh_in->b_size, GFP_NOFS);
jbd_lock_bh_state(bh_in);
if (jh_in->b_frozen_data) {
kfree(tmp);
jbd_slab_free(tmp, bh_in->b_size);
goto repeat;
}
@ -1069,17 +1070,17 @@ static int load_superblock(journal_t *journal)
int journal_load(journal_t *journal)
{
int err;
journal_superblock_t *sb;
err = load_superblock(journal);
if (err)
return err;
sb = journal->j_superblock;
/* If this is a V2 superblock, then we have to check the
* features flags on it. */
if (journal->j_format_version >= 2) {
journal_superblock_t *sb = journal->j_superblock;
if ((sb->s_feature_ro_compat &
~cpu_to_be32(JFS_KNOWN_ROCOMPAT_FEATURES)) ||
(sb->s_feature_incompat &
@ -1090,6 +1091,13 @@ int journal_load(journal_t *journal)
}
}
/*
* Create a slab for this blocksize
*/
err = journal_create_jbd_slab(cpu_to_be32(sb->s_blocksize));
if (err)
return err;
/* Let the recovery code check whether it needs to recover any
* data from the journal. */
if (journal_recover(journal))
@ -1611,6 +1619,77 @@ void * __jbd_kmalloc (const char *where, size_t size, gfp_t flags, int retry)
return kmalloc(size, flags | (retry ? __GFP_NOFAIL : 0));
}
/*
* jbd slab management: create 1k, 2k, 4k, 8k slabs as needed
* and allocate frozen and commit buffers from these slabs.
*
* Reason for doing this is to avoid, SLAB_DEBUG - since it could
* cause bh to cross page boundary.
*/
#define JBD_MAX_SLABS 5
#define JBD_SLAB_INDEX(size) (size >> 11)
static kmem_cache_t *jbd_slab[JBD_MAX_SLABS];
static const char *jbd_slab_names[JBD_MAX_SLABS] = {
"jbd_1k", "jbd_2k", "jbd_4k", NULL, "jbd_8k"
};
static void journal_destroy_jbd_slabs(void)
{
int i;
for (i = 0; i < JBD_MAX_SLABS; i++) {
if (jbd_slab[i])
kmem_cache_destroy(jbd_slab[i]);
jbd_slab[i] = NULL;
}
}
static int journal_create_jbd_slab(size_t slab_size)
{
int i = JBD_SLAB_INDEX(slab_size);
BUG_ON(i >= JBD_MAX_SLABS);
/*
* Check if we already have a slab created for this size
*/
if (jbd_slab[i])
return 0;
/*
* Create a slab and force alignment to be same as slabsize -
* this will make sure that allocations won't cross the page
* boundary.
*/
jbd_slab[i] = kmem_cache_create(jbd_slab_names[i],
slab_size, slab_size, 0, NULL, NULL);
if (!jbd_slab[i]) {
printk(KERN_EMERG "JBD: no memory for jbd_slab cache\n");
return -ENOMEM;
}
return 0;
}
void * jbd_slab_alloc(size_t size, gfp_t flags)
{
int idx;
idx = JBD_SLAB_INDEX(size);
BUG_ON(jbd_slab[idx] == NULL);
return kmem_cache_alloc(jbd_slab[idx], flags | __GFP_NOFAIL);
}
void jbd_slab_free(void *ptr, size_t size)
{
int idx;
idx = JBD_SLAB_INDEX(size);
BUG_ON(jbd_slab[idx] == NULL);
kmem_cache_free(jbd_slab[idx], ptr);
}
/*
* Journal_head storage management
*/
@ -1799,13 +1878,13 @@ static void __journal_remove_journal_head(struct buffer_head *bh)
printk(KERN_WARNING "%s: freeing "
"b_frozen_data\n",
__FUNCTION__);
kfree(jh->b_frozen_data);
jbd_slab_free(jh->b_frozen_data, bh->b_size);
}
if (jh->b_committed_data) {
printk(KERN_WARNING "%s: freeing "
"b_committed_data\n",
__FUNCTION__);
kfree(jh->b_committed_data);
jbd_slab_free(jh->b_committed_data, bh->b_size);
}
bh->b_private = NULL;
jh->b_bh = NULL; /* debug, really */
@ -1961,6 +2040,7 @@ static void journal_destroy_caches(void)
journal_destroy_revoke_caches();
journal_destroy_journal_head_cache();
journal_destroy_handle_cache();
journal_destroy_jbd_slabs();
}
static int __init journal_init(void)

9
fs/jbd/transaction.c
View file

@ -666,8 +666,9 @@ repeat:
if (!frozen_buffer) {
JBUFFER_TRACE(jh, "allocate memory for buffer");
jbd_unlock_bh_state(bh);
frozen_buffer = jbd_kmalloc(jh2bh(jh)->b_size,
GFP_NOFS);
frozen_buffer =
jbd_slab_alloc(jh2bh(jh)->b_size,
GFP_NOFS);
if (!frozen_buffer) {
printk(KERN_EMERG
"%s: OOM for frozen_buffer\n",
@ -879,7 +880,7 @@ int journal_get_undo_access(handle_t *handle, struct buffer_head *bh)
repeat:
if (!jh->b_committed_data) {
committed_data = jbd_kmalloc(jh2bh(jh)->b_size, GFP_NOFS);
committed_data = jbd_slab_alloc(jh2bh(jh)->b_size, GFP_NOFS);
if (!committed_data) {
printk(KERN_EMERG "%s: No memory for committed data\n",
__FUNCTION__);
@ -906,7 +907,7 @@ repeat:
out:
journal_put_journal_head(jh);
if (unlikely(committed_data))
kfree(committed_data);
jbd_slab_free(committed_data, bh->b_size);
return err;
}

16
fs/jfs/inode.c
View file

@ -168,16 +168,15 @@ void jfs_dirty_inode(struct inode *inode)
set_cflag(COMMIT_Dirty, inode);
}
static int
jfs_get_blocks(struct inode *ip, sector_t lblock, unsigned long max_blocks,
struct buffer_head *bh_result, int create)
int jfs_get_block(struct inode *ip, sector_t lblock,
struct buffer_head *bh_result, int create)
{
s64 lblock64 = lblock;
int rc = 0;
xad_t xad;
s64 xaddr;
int xflag;
s32 xlen = max_blocks;
s32 xlen = bh_result->b_size >> ip->i_blkbits;
/*
* Take appropriate lock on inode
@ -188,7 +187,7 @@ jfs_get_blocks(struct inode *ip, sector_t lblock, unsigned long max_blocks,
IREAD_LOCK(ip);
if (((lblock64 << ip->i_sb->s_blocksize_bits) < ip->i_size) &&
(!xtLookup(ip, lblock64, max_blocks, &xflag, &xaddr, &xlen, 0)) &&
(!xtLookup(ip, lblock64, xlen, &xflag, &xaddr, &xlen, 0)) &&
xaddr) {
if (xflag & XAD_NOTRECORDED) {
if (!create)
@ -255,13 +254,6 @@ jfs_get_blocks(struct inode *ip, sector_t lblock, unsigned long max_blocks,
return rc;
}
static int jfs_get_block(struct inode *ip, sector_t lblock,
struct buffer_head *bh_result, int create)
{
return jfs_get_blocks(ip, lblock, bh_result->b_size >> ip->i_blkbits,
bh_result, create);
}
static int jfs_writepage(struct page *page, struct writeback_control *wbc)
{
return nobh_writepage(page, jfs_get_block, wbc);

1
fs/jfs/jfs_inode.h
View file

@ -32,6 +32,7 @@ extern void jfs_truncate_nolock(struct inode *, loff_t);
extern void jfs_free_zero_link(struct inode *);
extern struct dentry *jfs_get_parent(struct dentry *dentry);
extern void jfs_set_inode_flags(struct inode *);
extern int jfs_get_block(struct inode *, sector_t, struct buffer_head *, int);
extern const struct address_space_operations jfs_aops;
extern struct inode_operations jfs_dir_inode_operations;

2
fs/jfs/jfs_txnmgr.c
View file

@ -2944,7 +2944,7 @@ int jfs_sync(void *arg)
* Inode is being freed
*/
list_del_init(&jfs_ip->anon_inode_list);
} else if (! !mutex_trylock(&jfs_ip->commit_mutex)) {
} else if (mutex_trylock(&jfs_ip->commit_mutex)) {
/*
* inode will be removed from anonymous list
* when it is committed

33
fs/jfs/namei.c
View file

@ -165,8 +165,8 @@ static int jfs_create(struct inode *dip, struct dentry *dentry, int mode,
out3:
txEnd(tid);
mutex_unlock(&JFS_IP(dip)->commit_mutex);
mutex_unlock(&JFS_IP(ip)->commit_mutex);
mutex_unlock(&JFS_IP(dip)->commit_mutex);
if (rc) {
free_ea_wmap(ip);
ip->i_nlink = 0;
@ -300,8 +300,8 @@ static int jfs_mkdir(struct inode *dip, struct dentry *dentry, int mode)
out3:
txEnd(tid);
mutex_unlock(&JFS_IP(dip)->commit_mutex);
mutex_unlock(&JFS_IP(ip)->commit_mutex);
mutex_unlock(&JFS_IP(dip)->commit_mutex);
if (rc) {
free_ea_wmap(ip);
ip->i_nlink = 0;
@ -384,8 +384,8 @@ static int jfs_rmdir(struct inode *dip, struct dentry *dentry)
if (rc == -EIO)
txAbort(tid, 1);
txEnd(tid);
mutex_unlock(&JFS_IP(dip)->commit_mutex);
mutex_unlock(&JFS_IP(ip)->commit_mutex);
mutex_unlock(&JFS_IP(dip)->commit_mutex);
goto out2;
}
@ -422,8 +422,8 @@ static int jfs_rmdir(struct inode *dip, struct dentry *dentry)
txEnd(tid);
mutex_unlock(&JFS_IP(dip)->commit_mutex);
mutex_unlock(&JFS_IP(ip)->commit_mutex);
mutex_unlock(&JFS_IP(dip)->commit_mutex);
/*
* Truncating the directory index table is not guaranteed. It
@ -503,8 +503,8 @@ static int jfs_unlink(struct inode *dip, struct dentry *dentry)
if (rc == -EIO)
txAbort(tid, 1); /* Marks FS Dirty */
txEnd(tid);
mutex_unlock(&JFS_IP(dip)->commit_mutex);
mutex_unlock(&JFS_IP(ip)->commit_mutex);
mutex_unlock(&JFS_IP(dip)->commit_mutex);
IWRITE_UNLOCK(ip);
goto out1;
}
@ -527,8 +527,8 @@ static int jfs_unlink(struct inode *dip, struct dentry *dentry)
if ((new_size = commitZeroLink(tid, ip)) < 0) {
txAbort(tid, 1); /* Marks FS Dirty */
txEnd(tid);
mutex_unlock(&JFS_IP(dip)->commit_mutex);
mutex_unlock(&JFS_IP(ip)->commit_mutex);
mutex_unlock(&JFS_IP(dip)->commit_mutex);
IWRITE_UNLOCK(ip);
rc = new_size;
goto out1;
@ -556,9 +556,8 @@ static int jfs_unlink(struct inode *dip, struct dentry *dentry)
txEnd(tid);
mutex_unlock(&JFS_IP(dip)->commit_mutex);
mutex_unlock(&JFS_IP(ip)->commit_mutex);
mutex_unlock(&JFS_IP(dip)->commit_mutex);
while (new_size && (rc == 0)) {
tid = txBegin(dip->i_sb, 0);
@ -847,8 +846,8 @@ static int jfs_link(struct dentry *old_dentry,
out:
txEnd(tid);
mutex_unlock(&JFS_IP(dir)->commit_mutex);
mutex_unlock(&JFS_IP(ip)->commit_mutex);
mutex_unlock(&JFS_IP(dir)->commit_mutex);
jfs_info("jfs_link: rc:%d", rc);
return rc;
@ -1037,8 +1036,8 @@ static int jfs_symlink(struct inode *dip, struct dentry *dentry,
out3:
txEnd(tid);
mutex_unlock(&JFS_IP(dip)->commit_mutex);
mutex_unlock(&JFS_IP(ip)->commit_mutex);
mutex_unlock(&JFS_IP(dip)->commit_mutex);
if (rc) {
free_ea_wmap(ip);
ip->i_nlink = 0;
@ -1160,10 +1159,11 @@ static int jfs_rename(struct inode *old_dir, struct dentry *old_dentry,
if (S_ISDIR(new_ip->i_mode)) {
new_ip->i_nlink--;
if (new_ip->i_nlink) {
mutex_unlock(&JFS_IP(new_dir)->commit_mutex);
mutex_unlock(&JFS_IP(old_ip)->commit_mutex);
mutex_unlock(&JFS_IP(new_ip)->commit_mutex);
if (old_dir != new_dir)
mutex_unlock(&JFS_IP(old_dir)->commit_mutex);
mutex_unlock(&JFS_IP(old_ip)->commit_mutex);
mutex_unlock(&JFS_IP(new_dir)->commit_mutex);
if (!S_ISDIR(old_ip->i_mode) && new_ip)
IWRITE_UNLOCK(new_ip);
jfs_error(new_ip->i_sb,
@ -1281,13 +1281,12 @@ static int jfs_rename(struct inode *old_dir, struct dentry *old_dentry,
out4:
txEnd(tid);
mutex_unlock(&JFS_IP(new_dir)->commit_mutex);
mutex_unlock(&JFS_IP(old_ip)->commit_mutex);
if (old_dir != new_dir)
mutex_unlock(&JFS_IP(old_dir)->commit_mutex);
if (new_ip)
mutex_unlock(&JFS_IP(new_ip)->commit_mutex);
if (old_dir != new_dir)
mutex_unlock(&JFS_IP(old_dir)->commit_mutex);
mutex_unlock(&JFS_IP(old_ip)->commit_mutex);
mutex_unlock(&JFS_IP(new_dir)->commit_mutex);
while (new_size && (rc == 0)) {
tid = txBegin(new_ip->i_sb, 0);

118
fs/jfs/super.c
View file

@ -26,6 +26,7 @@
#include <linux/moduleparam.h>
#include <linux/kthread.h>
#include <linux/posix_acl.h>
#include <linux/buffer_head.h>
#include <asm/uaccess.h>
#include <linux/seq_file.h>
@ -298,7 +299,7 @@ static int parse_options(char *options, struct super_block *sb, s64 *newLVSize,
break;
}
#if defined(CONFIG_QUOTA)
#ifdef CONFIG_QUOTA
case Opt_quota:
case Opt_usrquota:
*flag |= JFS_USRQUOTA;
@ -597,7 +598,7 @@ static int jfs_show_options(struct seq_file *seq, struct vfsmount *vfs)
if (sbi->flag & JFS_NOINTEGRITY)
seq_puts(seq, ",nointegrity");
#if defined(CONFIG_QUOTA)
#ifdef CONFIG_QUOTA
if (sbi->flag & JFS_USRQUOTA)
seq_puts(seq, ",usrquota");
@ -608,6 +609,113 @@ static int jfs_show_options(struct seq_file *seq, struct vfsmount *vfs)
return 0;
}
#ifdef CONFIG_QUOTA
/* Read data from quotafile - avoid pagecache and such because we cannot afford
* acquiring the locks... As quota files are never truncated and quota code
* itself serializes the operations (and noone else should touch the files)
* we don't have to be afraid of races */
static ssize_t jfs_quota_read(struct super_block *sb, int type, char *data,
size_t len, loff_t off)
{
struct inode *inode = sb_dqopt(sb)->files[type];
sector_t blk = off >> sb->s_blocksize_bits;
int err = 0;
int offset = off & (sb->s_blocksize - 1);
int tocopy;
size_t toread;
struct buffer_head tmp_bh;
struct buffer_head *bh;
loff_t i_size = i_size_read(inode);
if (off > i_size)
return 0;
if (off+len > i_size)
len = i_size-off;
toread = len;
while (toread > 0) {
tocopy = sb->s_blocksize - offset < toread ?
sb->s_blocksize - offset : toread;
tmp_bh.b_state = 0;
tmp_bh.b_size = 1 << inode->i_blkbits;
err = jfs_get_block(inode, blk, &tmp_bh, 0);
if (err)
return err;
if (!buffer_mapped(&tmp_bh)) /* A hole? */
memset(data, 0, tocopy);
else {
bh = sb_bread(sb, tmp_bh.b_blocknr);
if (!bh)
return -EIO;
memcpy(data, bh->b_data+offset, tocopy);
brelse(bh);
}
offset = 0;
toread -= tocopy;
data += tocopy;
blk++;
}
return len;
}
/* Write to quotafile */
static ssize_t jfs_quota_write(struct super_block *sb, int type,
const char *data, size_t len, loff_t off)
{
struct inode *inode = sb_dqopt(sb)->files[type];
sector_t blk = off >> sb->s_blocksize_bits;
int err = 0;
int offset = off & (sb->s_blocksize - 1);
int tocopy;
size_t towrite = len;
struct buffer_head tmp_bh;
struct buffer_head *bh;
mutex_lock(&inode->i_mutex);
while (towrite > 0) {
tocopy = sb->s_blocksize - offset < towrite ?
sb->s_blocksize - offset : towrite;
tmp_bh.b_state = 0;
tmp_bh.b_size = 1 << inode->i_blkbits;
err = jfs_get_block(inode, blk, &tmp_bh, 1);
if (err)
goto out;
if (offset || tocopy != sb->s_blocksize)
bh = sb_bread(sb, tmp_bh.b_blocknr);
else
bh = sb_getblk(sb, tmp_bh.b_blocknr);
if (!bh) {
err = -EIO;
goto out;
}
lock_buffer(bh);
memcpy(bh->b_data+offset, data, tocopy);
flush_dcache_page(bh->b_page);
set_buffer_uptodate(bh);
mark_buffer_dirty(bh);
unlock_buffer(bh);
brelse(bh);
offset = 0;
towrite -= tocopy;
data += tocopy;
blk++;
}
out:
if (len == towrite)
return err;
if (inode->i_size < off+len-towrite)
i_size_write(inode, off+len-towrite);
inode->i_version++;
inode->i_mtime = inode->i_ctime = CURRENT_TIME;
mark_inode_dirty(inode);
mutex_unlock(&inode->i_mutex);
return len - towrite;
}
#endif
static struct super_operations jfs_super_operations = {
.alloc_inode = jfs_alloc_inode,
.destroy_inode = jfs_destroy_inode,
@ -621,7 +729,11 @@ static struct super_operations jfs_super_operations = {
.unlockfs = jfs_unlockfs,
.statfs = jfs_statfs,
.remount_fs = jfs_remount,
.show_options = jfs_show_options
.show_options = jfs_show_options,
#ifdef CONFIG_QUOTA
.quota_read = jfs_quota_read,
.quota_write = jfs_quota_write,
#endif
};
static struct export_operations jfs_export_operations = {

26
fs/lockd/clntproc.c
View file

@ -454,7 +454,7 @@ static void nlmclnt_locks_init_private(struct file_lock *fl, struct nlm_host *ho
fl->fl_ops = &nlmclnt_lock_ops;
}
static void do_vfs_lock(struct file_lock *fl)
static int do_vfs_lock(struct file_lock *fl)
{
int res = 0;
switch (fl->fl_flags & (FL_POSIX|FL_FLOCK)) {
@ -467,9 +467,7 @@ static void do_vfs_lock(struct file_lock *fl)
default:
BUG();
}
if (res < 0)
printk(KERN_WARNING "%s: VFS is out of sync with lock manager!\n",
__FUNCTION__);
return res;
}
/*
@ -498,6 +496,7 @@ nlmclnt_lock(struct nlm_rqst *req, struct file_lock *fl)
struct nlm_host *host = req->a_host;
struct nlm_res *resp = &req->a_res;
struct nlm_wait *block = NULL;
unsigned char fl_flags = fl->fl_flags;
int status = -ENOLCK;
if (!host->h_monitored && nsm_monitor(host) < 0) {
@ -505,6 +504,10 @@ nlmclnt_lock(struct nlm_rqst *req, struct file_lock *fl)
host->h_name);
goto out;
}
fl->fl_flags |= FL_ACCESS;
status = do_vfs_lock(fl);
if (status < 0)
goto out;
block = nlmclnt_prepare_block(host, fl);
again:
@ -539,9 +542,10 @@ again:
up_read(&host->h_rwsem);
goto again;
}
fl->fl_flags |= FL_SLEEP;
/* Ensure the resulting lock will get added to granted list */
do_vfs_lock(fl);
fl->fl_flags = fl_flags | FL_SLEEP;
if (do_vfs_lock(fl) < 0)
printk(KERN_WARNING "%s: VFS is out of sync with lock manager!\n", __FUNCTION__);
up_read(&host->h_rwsem);
}
status = nlm_stat_to_errno(resp->status);
@ -552,6 +556,7 @@ out_unblock:
nlmclnt_cancel(host, req->a_args.block, fl);
out:
nlm_release_call(req);
fl->fl_flags = fl_flags;
return status;
}
@ -606,15 +611,19 @@ nlmclnt_unlock(struct nlm_rqst *req, struct file_lock *fl)
{
struct nlm_host *host = req->a_host;
struct nlm_res *resp = &req->a_res;
int status;
int status = 0;
/*
* Note: the server is supposed to either grant us the unlock
* request, or to deny it with NLM_LCK_DENIED_GRACE_PERIOD. In either
* case, we want to unlock.
*/
fl->fl_flags |= FL_EXISTS;
down_read(&host->h_rwsem);
do_vfs_lock(fl);
if (do_vfs_lock(fl) == -ENOENT) {
up_read(&host->h_rwsem);
goto out;
}
up_read(&host->h_rwsem);
if (req->a_flags & RPC_TASK_ASYNC)
@ -624,7 +633,6 @@ nlmclnt_unlock(struct nlm_rqst *req, struct file_lock *fl)
if (status < 0)
goto out;
status = 0;
if (resp->status == NLM_LCK_GRANTED)
goto out;

12
fs/lockd/svclock.c
View file

@ -638,9 +638,6 @@ static void nlmsvc_grant_callback(struct rpc_task *task, void *data)
if (task->tk_status < 0) {
/* RPC error: Re-insert for retransmission */
timeout = 10 * HZ;
} else if (block->b_done) {
/* Block already removed, kill it for real */
timeout = 0;
} else {
/* Call was successful, now wait for client callback */
timeout = 60 * HZ;
@ -709,13 +706,10 @@ nlmsvc_retry_blocked(void)
break;
if (time_after(block->b_when,jiffies))
break;
dprintk("nlmsvc_retry_blocked(%p, when=%ld, done=%d)\n",
block, block->b_when, block->b_done);
dprintk("nlmsvc_retry_blocked(%p, when=%ld)\n",
block, block->b_when);
kref_get(&block->b_count);
if (block->b_done)
nlmsvc_unlink_block(block);
else
nlmsvc_grant_blocked(block);
nlmsvc_grant_blocked(block);
nlmsvc_release_block(block);
}

15
fs/lockd/svcsubs.c
View file

@ -237,19 +237,22 @@ static int
nlm_traverse_files(struct nlm_host *host, int action)
{
struct nlm_file *file, **fp;
int i;
int i, ret = 0;
mutex_lock(&nlm_file_mutex);
for (i = 0; i < FILE_NRHASH; i++) {
fp = nlm_files + i;
while ((file = *fp) != NULL) {
file->f_count++;
mutex_unlock(&nlm_file_mutex);
/* Traverse locks, blocks and shares of this file
* and update file->f_locks count */
if (nlm_inspect_file(host, file, action)) {
mutex_unlock(&nlm_file_mutex);
return 1;
}
if (nlm_inspect_file(host, file, action))
ret = 1;
mutex_lock(&nlm_file_mutex);
file->f_count--;
/* No more references to this file. Let go of it. */
if (!file->f_blocks && !file->f_locks
&& !file->f_shares && !file->f_count) {
@ -262,7 +265,7 @@ nlm_traverse_files(struct nlm_host *host, int action)
}
}
mutex_unlock(&nlm_file_mutex);
return 0;
return ret;
}
/*

29
fs/locks.c
View file

@ -725,6 +725,10 @@ next_task:
/* Try to create a FLOCK lock on filp. We always insert new FLOCK locks
* at the head of the list, but that's secret knowledge known only to
* flock_lock_file and posix_lock_file.
*
* Note that if called with an FL_EXISTS argument, the caller may determine
* whether or not a lock was successfully freed by testing the return
* value for -ENOENT.
*/
static int flock_lock_file(struct file *filp, struct file_lock *request)
{
@ -735,6 +739,8 @@ static int flock_lock_file(struct file *filp, struct file_lock *request)
int found = 0;
lock_kernel();
if (request->fl_flags & FL_ACCESS)
goto find_conflict;
for_each_lock(inode, before) {
struct file_lock *fl = *before;
if (IS_POSIX(fl))
@ -750,8 +756,11 @@ static int flock_lock_file(struct file *filp, struct file_lock *request)
break;
}
if (request->fl_type == F_UNLCK)
if (request->fl_type == F_UNLCK) {
if ((request->fl_flags & FL_EXISTS) && !found)
error = -ENOENT;
goto out;
}
error = -ENOMEM;
new_fl = locks_alloc_lock();
@ -764,6 +773,7 @@ static int flock_lock_file(struct file *filp, struct file_lock *request)
if (found)
cond_resched();
find_conflict:
for_each_lock(inode, before) {
struct file_lock *fl = *before;
if (IS_POSIX(fl))
@ -777,6 +787,8 @@ static int flock_lock_file(struct file *filp, struct file_lock *request)
locks_insert_block(fl, request);
goto out;
}
if (request->fl_flags & FL_ACCESS)
goto out;
locks_copy_lock(new_fl, request);
locks_insert_lock(&inode->i_flock, new_fl);
new_fl = NULL;
@ -948,8 +960,11 @@ static int __posix_lock_file_conf(struct inode *inode, struct file_lock *request
error = 0;
if (!added) {
if (request->fl_type == F_UNLCK)
if (request->fl_type == F_UNLCK) {
if (request->fl_flags & FL_EXISTS)
error = -ENOENT;
goto out;
}
if (!new_fl) {
error = -ENOLCK;
@ -996,6 +1011,10 @@ static int __posix_lock_file_conf(struct inode *inode, struct file_lock *request
* Add a POSIX style lock to a file.
* We merge adjacent & overlapping locks whenever possible.
* POSIX locks are sorted by owner task, then by starting address
*
* Note that if called with an FL_EXISTS argument, the caller may determine
* whether or not a lock was successfully freed by testing the return
* value for -ENOENT.
*/
int posix_lock_file(struct file *filp, struct file_lock *fl)
{
@ -1402,8 +1421,9 @@ static int __setlease(struct file *filp, long arg, struct file_lock **flp)
if (!leases_enable)
goto out;
error = lease_alloc(filp, arg, &fl);
if (error)
error = -ENOMEM;
fl = locks_alloc_lock();
if (fl == NULL)
goto out;
locks_copy_lock(fl, lease);
@ -1411,6 +1431,7 @@ static int __setlease(struct file *filp, long arg, struct file_lock **flp)
locks_insert_lock(before, fl);
*flp = fl;
error = 0;
out:
return error;
}

13
fs/minix/inode.c
View file

@ -204,6 +204,8 @@ static int minix_fill_super(struct super_block *s, void *data, int silent)
/*
* Allocate the buffer map to keep the superblock small.
*/
if (sbi->s_imap_blocks == 0 || sbi->s_zmap_blocks == 0)
goto out_illegal_sb;
i = (sbi->s_imap_blocks + sbi->s_zmap_blocks) * sizeof(bh);
map = kmalloc(i, GFP_KERNEL);
if (!map)
@ -263,7 +265,7 @@ out_no_root:
out_no_bitmap:
printk("MINIX-fs: bad superblock or unable to read bitmaps\n");
out_freemap:
out_freemap:
for (i = 0; i < sbi->s_imap_blocks; i++)
brelse(sbi->s_imap[i]);
for (i = 0; i < sbi->s_zmap_blocks; i++)
@ -276,11 +278,16 @@ out_no_map:
printk("MINIX-fs: can't allocate map\n");
goto out_release;
out_illegal_sb:
if (!silent)
printk("MINIX-fs: bad superblock\n");
goto out_release;
out_no_fs:
if (!silent)
printk("VFS: Can't find a Minix or Minix V2 filesystem "
"on device %s\n", s->s_id);
out_release:
out_release:
brelse(bh);
goto out;
@ -290,7 +297,7 @@ out_bad_hblock:
out_bad_sb:
printk("MINIX-fs: unable to read superblock\n");
out:
out:
s->s_fs_info = NULL;
kfree(sbi);
return -EINVAL;

27
fs/namei.c
View file

@ -159,7 +159,7 @@ char * getname(const char __user * filename)
#ifdef CONFIG_AUDITSYSCALL
void putname(const char *name)
{
if (unlikely(current->audit_context))
if (unlikely(!audit_dummy_context()))
audit_putname(name);
else
__putname(name);
@ -227,10 +227,10 @@ int generic_permission(struct inode *inode, int mask,
int permission(struct inode *inode, int mask, struct nameidata *nd)
{
umode_t mode = inode->i_mode;
int retval, submask;
if (mask & MAY_WRITE) {
umode_t mode = inode->i_mode;
/*
* Nobody gets write access to a read-only fs.
@ -247,6 +247,13 @@ int permission(struct inode *inode, int mask, struct nameidata *nd)
}
/*
* MAY_EXEC on regular files requires special handling: We override
* filesystem execute permissions if the mode bits aren't set.
*/
if ((mask & MAY_EXEC) && S_ISREG(mode) && !(mode & S_IXUGO))
return -EACCES;
/* Ordinary permission routines do not understand MAY_APPEND. */
submask = mask & ~MAY_APPEND;
if (inode->i_op && inode->i_op->permission)
@ -1125,7 +1132,7 @@ static int fastcall do_path_lookup(int dfd, const char *name,
retval = link_path_walk(name, nd);
out:
if (likely(retval == 0)) {
if (unlikely(current->audit_context && nd && nd->dentry &&
if (unlikely(!audit_dummy_context() && nd && nd->dentry &&
nd->dentry->d_inode))
audit_inode(name, nd->dentry->d_inode);
}
@ -1357,7 +1364,7 @@ static int may_delete(struct inode *dir,struct dentry *victim,int isdir)
return -ENOENT;
BUG_ON(victim->d_parent->d_inode != dir);
audit_inode_child(victim->d_name.name, victim->d_inode, dir->i_ino);
audit_inode_child(victim->d_name.name, victim->d_inode, dir);
error = permission(dir,MAY_WRITE | MAY_EXEC, NULL);
if (error)
@ -1659,6 +1666,7 @@ do_last:
* It already exists.
*/
mutex_unlock(&dir->d_inode->i_mutex);
audit_inode_update(path.dentry->d_inode);
error = -EEXIST;
if (flag & O_EXCL)
@ -1669,6 +1677,7 @@ do_last:
if (flag & O_NOFOLLOW)
goto exit_dput;
}
error = -ENOENT;
if (!path.dentry->d_inode)
goto exit_dput;
@ -1712,8 +1721,14 @@ do_link:
if (error)
goto exit_dput;
error = __do_follow_link(&path, nd);
if (error)
if (error) {
/* Does someone understand code flow here? Or it is only
* me so stupid? Anathema to whoever designed this non-sense
* with "intent.open".
*/
release_open_intent(nd);
return error;
}
nd->flags &= ~LOOKUP_PARENT;
if (nd->last_type == LAST_BIND)
goto ok;
@ -1759,6 +1774,8 @@ struct dentry *lookup_create(struct nameidata *nd, int is_dir)
if (nd->last_type != LAST_NORM)
goto fail;
nd->flags &= ~LOOKUP_PARENT;
nd->flags |= LOOKUP_CREATE;
nd->intent.open.flags = O_EXCL;
/*
* Do the final lookup.

4
fs/nfs/dir.c
View file

@ -690,7 +690,9 @@ int nfs_lookup_verify_inode(struct inode *inode, struct nameidata *nd)
goto out_force;
/* This is an open(2) */
if (nfs_lookup_check_intent(nd, LOOKUP_OPEN) != 0 &&
!(server->flags & NFS_MOUNT_NOCTO))
!(server->flags & NFS_MOUNT_NOCTO) &&
(S_ISREG(inode->i_mode) ||
S_ISDIR(inode->i_mode)))
goto out_force;
}
return nfs_revalidate_inode(server, inode);

435
fs/nfs/direct.c
View file

@ -67,25 +67,19 @@ struct nfs_direct_req {
struct kref kref; /* release manager */
/* I/O parameters */
struct list_head list, /* nfs_read/write_data structs */
rewrite_list; /* saved nfs_write_data structs */
struct nfs_open_context *ctx; /* file open context info */
struct kiocb * iocb; /* controlling i/o request */
struct inode * inode; /* target file of i/o */
unsigned long user_addr; /* location of user's buffer */
size_t user_count; /* total bytes to move */
loff_t pos; /* starting offset in file */
struct page ** pages; /* pages in our buffer */
unsigned int npages; /* count of pages */
/* completion state */
atomic_t io_count; /* i/os we're waiting for */
spinlock_t lock; /* protect completion state */
int outstanding; /* i/os we're waiting for */
ssize_t count, /* bytes actually processed */
error; /* any reported error */
struct completion completion; /* wait for i/o completion */
/* commit state */
struct list_head rewrite_list; /* saved nfs_write_data structs */
struct nfs_write_data * commit_data; /* special write_data for commits */
int flags;
#define NFS_ODIRECT_DO_COMMIT (1) /* an unstable reply was received */
@ -93,8 +87,37 @@ struct nfs_direct_req {
struct nfs_writeverf verf; /* unstable write verifier */
};
static void nfs_direct_write_schedule(struct nfs_direct_req *dreq, int sync);
static void nfs_direct_write_complete(struct nfs_direct_req *dreq, struct inode *inode);
static const struct rpc_call_ops nfs_write_direct_ops;
static inline void get_dreq(struct nfs_direct_req *dreq)
{
atomic_inc(&dreq->io_count);
}
static inline int put_dreq(struct nfs_direct_req *dreq)
{
return atomic_dec_and_test(&dreq->io_count);
}
/*
* "size" is never larger than rsize or wsize.
*/
static inline int nfs_direct_count_pages(unsigned long user_addr, size_t size)
{
int page_count;
page_count = (user_addr + size + PAGE_SIZE - 1) >> PAGE_SHIFT;
page_count -= user_addr >> PAGE_SHIFT;
BUG_ON(page_count < 0);
return page_count;
}
static inline unsigned int nfs_max_pages(unsigned int size)
{
return (size + PAGE_CACHE_SIZE - 1) >> PAGE_CACHE_SHIFT;
}
/**
* nfs_direct_IO - NFS address space operation for direct I/O
@ -118,50 +141,21 @@ ssize_t nfs_direct_IO(int rw, struct kiocb *iocb, const struct iovec *iov, loff_
return -EINVAL;
}
static void nfs_free_user_pages(struct page **pages, int npages, int do_dirty)
static void nfs_direct_dirty_pages(struct page **pages, int npages)
{
int i;
for (i = 0; i < npages; i++) {
struct page *page = pages[i];
if (do_dirty && !PageCompound(page))
if (!PageCompound(page))
set_page_dirty_lock(page);
page_cache_release(page);
}
kfree(pages);
}
static inline int nfs_get_user_pages(int rw, unsigned long user_addr, size_t size, struct page ***pages)
static void nfs_direct_release_pages(struct page **pages, int npages)
{
int result = -ENOMEM;
unsigned long page_count;
size_t array_size;
page_count = (user_addr + size + PAGE_SIZE - 1) >> PAGE_SHIFT;
page_count -= user_addr >> PAGE_SHIFT;
array_size = (page_count * sizeof(struct page *));
*pages = kmalloc(array_size, GFP_KERNEL);
if (*pages) {
down_read(&current->mm->mmap_sem);
result = get_user_pages(current, current->mm, user_addr,
page_count, (rw == READ), 0,
*pages, NULL);
up_read(&current->mm->mmap_sem);
if (result != page_count) {
/*
* If we got fewer pages than expected from
* get_user_pages(), the user buffer runs off the
* end of a mapping; return EFAULT.
*/
if (result >= 0) {
nfs_free_user_pages(*pages, result, 0);
result = -EFAULT;
} else
kfree(*pages);
*pages = NULL;
}
}
return result;
int i;
for (i = 0; i < npages; i++)
page_cache_release(pages[i]);
}
static inline struct nfs_direct_req *nfs_direct_req_alloc(void)
@ -173,13 +167,13 @@ static inline struct nfs_direct_req *nfs_direct_req_alloc(void)
return NULL;
kref_init(&dreq->kref);
kref_get(&dreq->kref);
init_completion(&dreq->completion);
INIT_LIST_HEAD(&dreq->list);
INIT_LIST_HEAD(&dreq->rewrite_list);
dreq->iocb = NULL;
dreq->ctx = NULL;
spin_lock_init(&dreq->lock);
dreq->outstanding = 0;
atomic_set(&dreq->io_count, 0);
dreq->count = 0;
dreq->error = 0;
dreq->flags = 0;
@ -220,18 +214,11 @@ out:
}
/*
* We must hold a reference to all the pages in this direct read request
* until the RPCs complete. This could be long *after* we are woken up in
* nfs_direct_wait (for instance, if someone hits ^C on a slow server).
*
* In addition, synchronous I/O uses a stack-allocated iocb. Thus we
* can't trust the iocb is still valid here if this is a synchronous
* request. If the waiter is woken prematurely, the iocb is long gone.
* Synchronous I/O uses a stack-allocated iocb. Thus we can't trust
* the iocb is still valid here if this is a synchronous request.
*/
static void nfs_direct_complete(struct nfs_direct_req *dreq)
{
nfs_free_user_pages(dreq->pages, dreq->npages, 1);
if (dreq->iocb) {
long res = (long) dreq->error;
if (!res)
@ -244,48 +231,10 @@ static void nfs_direct_complete(struct nfs_direct_req *dreq)
}
/*
* Note we also set the number of requests we have in the dreq when we are
* done. This prevents races with I/O completion so we will always wait
* until all requests have been dispatched and completed.
* We must hold a reference to all the pages in this direct read request
* until the RPCs complete. This could be long *after* we are woken up in
* nfs_direct_wait (for instance, if someone hits ^C on a slow server).
*/
static struct nfs_direct_req *nfs_direct_read_alloc(size_t nbytes, size_t rsize)
{
struct list_head *list;
struct nfs_direct_req *dreq;
unsigned int rpages = (rsize + PAGE_CACHE_SIZE - 1) >> PAGE_CACHE_SHIFT;
dreq = nfs_direct_req_alloc();
if (!dreq)
return NULL;
list = &dreq->list;
for(;;) {
struct nfs_read_data *data = nfs_readdata_alloc(rpages);
if (unlikely(!data)) {
while (!list_empty(list)) {
data = list_entry(list->next,
struct nfs_read_data, pages);
list_del(&data->pages);
nfs_readdata_free(data);
}
kref_put(&dreq->kref, nfs_direct_req_release);
return NULL;
}
INIT_LIST_HEAD(&data->pages);
list_add(&data->pages, list);
data->req = (struct nfs_page *) dreq;
dreq->outstanding++;
if (nbytes <= rsize)
break;
nbytes -= rsize;
}
kref_get(&dreq->kref);
return dreq;
}
static void nfs_direct_read_result(struct rpc_task *task, void *calldata)
{
struct nfs_read_data *data = calldata;
@ -294,6 +243,9 @@ static void nfs_direct_read_result(struct rpc_task *task, void *calldata)
if (nfs_readpage_result(task, data) != 0)
return;
nfs_direct_dirty_pages(data->pagevec, data->npages);
nfs_direct_release_pages(data->pagevec, data->npages);
spin_lock(&dreq->lock);
if (likely(task->tk_status >= 0))
@ -301,13 +253,10 @@ static void nfs_direct_read_result(struct rpc_task *task, void *calldata)
else
dreq->error = task->tk_status;
if (--dreq->outstanding) {
spin_unlock(&dreq->lock);
return;
}
spin_unlock(&dreq->lock);
nfs_direct_complete(dreq);
if (put_dreq(dreq))
nfs_direct_complete(dreq);
}
static const struct rpc_call_ops nfs_read_direct_ops = {
@ -316,41 +265,60 @@ static const struct rpc_call_ops nfs_read_direct_ops = {
};
/*
* For each nfs_read_data struct that was allocated on the list, dispatch
* an NFS READ operation
* For each rsize'd chunk of the user's buffer, dispatch an NFS READ
* operation. If nfs_readdata_alloc() or get_user_pages() fails,
* bail and stop sending more reads. Read length accounting is
* handled automatically by nfs_direct_read_result(). Otherwise, if
* no requests have been sent, just return an error.
*/
static void nfs_direct_read_schedule(struct nfs_direct_req *dreq)
static ssize_t nfs_direct_read_schedule(struct nfs_direct_req *dreq, unsigned long user_addr, size_t count, loff_t pos)
{
struct nfs_open_context *ctx = dreq->ctx;
struct inode *inode = ctx->dentry->d_inode;
struct list_head *list = &dreq->list;
struct page **pages = dreq->pages;
size_t count = dreq->user_count;
loff_t pos = dreq->pos;
size_t rsize = NFS_SERVER(inode)->rsize;
unsigned int curpage, pgbase;
unsigned int rpages = nfs_max_pages(rsize);
unsigned int pgbase;
int result;
ssize_t started = 0;
curpage = 0;
pgbase = dreq->user_addr & ~PAGE_MASK;
get_dreq(dreq);
pgbase = user_addr & ~PAGE_MASK;
do {
struct nfs_read_data *data;
size_t bytes;
result = -ENOMEM;
data = nfs_readdata_alloc(rpages);
if (unlikely(!data))
break;
bytes = rsize;
if (count < rsize)
bytes = count;
BUG_ON(list_empty(list));
data = list_entry(list->next, struct nfs_read_data, pages);
list_del_init(&data->pages);
data->npages = nfs_direct_count_pages(user_addr, bytes);
down_read(&current->mm->mmap_sem);
result = get_user_pages(current, current->mm, user_addr,
data->npages, 1, 0, data->pagevec, NULL);
up_read(&current->mm->mmap_sem);
if (unlikely(result < data->npages)) {
if (result > 0)
nfs_direct_release_pages(data->pagevec, result);
nfs_readdata_release(data);
break;
}
get_dreq(dreq);
data->req = (struct nfs_page *) dreq;
data->inode = inode;
data->cred = ctx->cred;
data->args.fh = NFS_FH(inode);
data->args.context = ctx;
data->args.offset = pos;
data->args.pgbase = pgbase;
data->args.pages = &pages[curpage];
data->args.pages = data->pagevec;
data->args.count = bytes;
data->res.fattr = &data->fattr;
data->res.eof = 0;
@ -373,33 +341,35 @@ static void nfs_direct_read_schedule(struct nfs_direct_req *dreq)
bytes,
(unsigned long long)data->args.offset);
started += bytes;
user_addr += bytes;
pos += bytes;
pgbase += bytes;
curpage += pgbase >> PAGE_SHIFT;
pgbase &= ~PAGE_MASK;
count -= bytes;
} while (count != 0);
BUG_ON(!list_empty(list));
if (put_dreq(dreq))
nfs_direct_complete(dreq);
if (started)
return 0;
return result < 0 ? (ssize_t) result : -EFAULT;
}
static ssize_t nfs_direct_read(struct kiocb *iocb, unsigned long user_addr, size_t count, loff_t pos, struct page **pages, unsigned int nr_pages)
static ssize_t nfs_direct_read(struct kiocb *iocb, unsigned long user_addr, size_t count, loff_t pos)
{
ssize_t result;
ssize_t result = 0;
sigset_t oldset;
struct inode *inode = iocb->ki_filp->f_mapping->host;
struct rpc_clnt *clnt = NFS_CLIENT(inode);
struct nfs_direct_req *dreq;
dreq = nfs_direct_read_alloc(count, NFS_SERVER(inode)->rsize);
dreq = nfs_direct_req_alloc();
if (!dreq)
return -ENOMEM;
dreq->user_addr = user_addr;
dreq->user_count = count;
dreq->pos = pos;
dreq->pages = pages;
dreq->npages = nr_pages;
dreq->inode = inode;
dreq->ctx = get_nfs_open_context((struct nfs_open_context *)iocb->ki_filp->private_data);
if (!is_sync_kiocb(iocb))
@ -407,8 +377,9 @@ static ssize_t nfs_direct_read(struct kiocb *iocb, unsigned long user_addr, size
nfs_add_stats(inode, NFSIOS_DIRECTREADBYTES, count);
rpc_clnt_sigmask(clnt, &oldset);
nfs_direct_read_schedule(dreq);
result = nfs_direct_wait(dreq);
result = nfs_direct_read_schedule(dreq, user_addr, count, pos);
if (!result)
result = nfs_direct_wait(dreq);
rpc_clnt_sigunmask(clnt, &oldset);
return result;
@ -416,10 +387,10 @@ static ssize_t nfs_direct_read(struct kiocb *iocb, unsigned long user_addr, size
static void nfs_direct_free_writedata(struct nfs_direct_req *dreq)
{
list_splice_init(&dreq->rewrite_list, &dreq->list);
while (!list_empty(&dreq->list)) {
struct nfs_write_data *data = list_entry(dreq->list.next, struct nfs_write_data, pages);
while (!list_empty(&dreq->rewrite_list)) {
struct nfs_write_data *data = list_entry(dreq->rewrite_list.next, struct nfs_write_data, pages);
list_del(&data->pages);
nfs_direct_release_pages(data->pagevec, data->npages);
nfs_writedata_release(data);
}
}
@ -427,14 +398,51 @@ static void nfs_direct_free_writedata(struct nfs_direct_req *dreq)
#if defined(CONFIG_NFS_V3) || defined(CONFIG_NFS_V4)
static void nfs_direct_write_reschedule(struct nfs_direct_req *dreq)
{
struct list_head *pos;
struct inode *inode = dreq->inode;
struct list_head *p;
struct nfs_write_data *data;
list_splice_init(&dreq->rewrite_list, &dreq->list);
list_for_each(pos, &dreq->list)
dreq->outstanding++;
dreq->count = 0;
get_dreq(dreq);
nfs_direct_write_schedule(dreq, FLUSH_STABLE);
list_for_each(p, &dreq->rewrite_list) {
data = list_entry(p, struct nfs_write_data, pages);
get_dreq(dreq);
/*
* Reset data->res.
*/
nfs_fattr_init(&data->fattr);
data->res.count = data->args.count;
memset(&data->verf, 0, sizeof(data->verf));
/*
* Reuse data->task; data->args should not have changed
* since the original request was sent.
*/
rpc_init_task(&data->task, NFS_CLIENT(inode), RPC_TASK_ASYNC,
&nfs_write_direct_ops, data);
NFS_PROTO(inode)->write_setup(data, FLUSH_STABLE);
data->task.tk_priority = RPC_PRIORITY_NORMAL;
data->task.tk_cookie = (unsigned long) inode;
/*
* We're called via an RPC callback, so BKL is already held.
*/
rpc_execute(&data->task);
dprintk("NFS: %5u rescheduled direct write call (req %s/%Ld, %u bytes @ offset %Lu)\n",
data->task.tk_pid,
inode->i_sb->s_id,
(long long)NFS_FILEID(inode),
data->args.count,
(unsigned long long)data->args.offset);
}
if (put_dreq(dreq))
nfs_direct_write_complete(dreq, inode);
}
static void nfs_direct_commit_result(struct rpc_task *task, void *calldata)
@ -471,8 +479,8 @@ static void nfs_direct_commit_schedule(struct nfs_direct_req *dreq)
data->cred = dreq->ctx->cred;
data->args.fh = NFS_FH(data->inode);
data->args.offset = dreq->pos;
data->args.count = dreq->user_count;
data->args.offset = 0;
data->args.count = 0;
data->res.count = 0;
data->res.fattr = &data->fattr;
data->res.verf = &data->verf;
@ -534,47 +542,6 @@ static void nfs_direct_write_complete(struct nfs_direct_req *dreq, struct inode
}
#endif
static struct nfs_direct_req *nfs_direct_write_alloc(size_t nbytes, size_t wsize)
{
struct list_head *list;
struct nfs_direct_req *dreq;
unsigned int wpages = (wsize + PAGE_CACHE_SIZE - 1) >> PAGE_CACHE_SHIFT;
dreq = nfs_direct_req_alloc();
if (!dreq)
return NULL;
list = &dreq->list;
for(;;) {
struct nfs_write_data *data = nfs_writedata_alloc(wpages);
if (unlikely(!data)) {
while (!list_empty(list)) {
data = list_entry(list->next,
struct nfs_write_data, pages);
list_del(&data->pages);
nfs_writedata_free(data);
}
kref_put(&dreq->kref, nfs_direct_req_release);
return NULL;
}
INIT_LIST_HEAD(&data->pages);
list_add(&data->pages, list);
data->req = (struct nfs_page *) dreq;
dreq->outstanding++;
if (nbytes <= wsize)
break;
nbytes -= wsize;
}
nfs_alloc_commit_data(dreq);
kref_get(&dreq->kref);
return dreq;
}
static void nfs_direct_write_result(struct rpc_task *task, void *calldata)
{
struct nfs_write_data *data = calldata;
@ -604,8 +571,6 @@ static void nfs_direct_write_result(struct rpc_task *task, void *calldata)
}
}
}
/* In case we have to resend */
data->args.stable = NFS_FILE_SYNC;
spin_unlock(&dreq->lock);
}
@ -619,14 +584,8 @@ static void nfs_direct_write_release(void *calldata)
struct nfs_write_data *data = calldata;
struct nfs_direct_req *dreq = (struct nfs_direct_req *) data->req;
spin_lock(&dreq->lock);
if (--dreq->outstanding) {
spin_unlock(&dreq->lock);
return;
}
spin_unlock(&dreq->lock);
nfs_direct_write_complete(dreq, data->inode);
if (put_dreq(dreq))
nfs_direct_write_complete(dreq, data->inode);
}
static const struct rpc_call_ops nfs_write_direct_ops = {
@ -635,41 +594,62 @@ static const struct rpc_call_ops nfs_write_direct_ops = {
};
/*
* For each nfs_write_data struct that was allocated on the list, dispatch
* an NFS WRITE operation
* For each wsize'd chunk of the user's buffer, dispatch an NFS WRITE
* operation. If nfs_writedata_alloc() or get_user_pages() fails,
* bail and stop sending more writes. Write length accounting is
* handled automatically by nfs_direct_write_result(). Otherwise, if
* no requests have been sent, just return an error.
*/
static void nfs_direct_write_schedule(struct nfs_direct_req *dreq, int sync)
static ssize_t nfs_direct_write_schedule(struct nfs_direct_req *dreq, unsigned long user_addr, size_t count, loff_t pos, int sync)
{
struct nfs_open_context *ctx = dreq->ctx;
struct inode *inode = ctx->dentry->d_inode;
struct list_head *list = &dreq->list;
struct page **pages = dreq->pages;
size_t count = dreq->user_count;
loff_t pos = dreq->pos;
size_t wsize = NFS_SERVER(inode)->wsize;
unsigned int curpage, pgbase;
unsigned int wpages = nfs_max_pages(wsize);
unsigned int pgbase;
int result;
ssize_t started = 0;
curpage = 0;
pgbase = dreq->user_addr & ~PAGE_MASK;
get_dreq(dreq);
pgbase = user_addr & ~PAGE_MASK;
do {
struct nfs_write_data *data;
size_t bytes;
result = -ENOMEM;
data = nfs_writedata_alloc(wpages);
if (unlikely(!data))
break;
bytes = wsize;
if (count < wsize)
bytes = count;
BUG_ON(list_empty(list));
data = list_entry(list->next, struct nfs_write_data, pages);
data->npages = nfs_direct_count_pages(user_addr, bytes);
down_read(&current->mm->mmap_sem);
result = get_user_pages(current, current->mm, user_addr,
data->npages, 0, 0, data->pagevec, NULL);
up_read(&current->mm->mmap_sem);
if (unlikely(result < data->npages)) {
if (result > 0)
nfs_direct_release_pages(data->pagevec, result);
nfs_writedata_release(data);
break;
}
get_dreq(dreq);
list_move_tail(&data->pages, &dreq->rewrite_list);
data->req = (struct nfs_page *) dreq;
data->inode = inode;
data->cred = ctx->cred;
data->args.fh = NFS_FH(inode);
data->args.context = ctx;
data->args.offset = pos;
data->args.pgbase = pgbase;
data->args.pages = &pages[curpage];
data->args.pages = data->pagevec;
data->args.count = bytes;
data->res.fattr = &data->fattr;
data->res.count = bytes;
@ -693,19 +673,26 @@ static void nfs_direct_write_schedule(struct nfs_direct_req *dreq, int sync)
bytes,
(unsigned long long)data->args.offset);
started += bytes;
user_addr += bytes;
pos += bytes;
pgbase += bytes;
curpage += pgbase >> PAGE_SHIFT;
pgbase &= ~PAGE_MASK;
count -= bytes;
} while (count != 0);
BUG_ON(!list_empty(list));
if (put_dreq(dreq))
nfs_direct_write_complete(dreq, inode);
if (started)
return 0;
return result < 0 ? (ssize_t) result : -EFAULT;
}
static ssize_t nfs_direct_write(struct kiocb *iocb, unsigned long user_addr, size_t count, loff_t pos, struct page **pages, int nr_pages)
static ssize_t nfs_direct_write(struct kiocb *iocb, unsigned long user_addr, size_t count, loff_t pos)
{
ssize_t result;
ssize_t result = 0;
sigset_t oldset;
struct inode *inode = iocb->ki_filp->f_mapping->host;
struct rpc_clnt *clnt = NFS_CLIENT(inode);
@ -713,17 +700,14 @@ static ssize_t nfs_direct_write(struct kiocb *iocb, unsigned long user_addr, siz
size_t wsize = NFS_SERVER(inode)->wsize;
int sync = 0;
dreq = nfs_direct_write_alloc(count, wsize);
dreq = nfs_direct_req_alloc();
if (!dreq)
return -ENOMEM;
nfs_alloc_commit_data(dreq);
if (dreq->commit_data == NULL || count < wsize)
sync = FLUSH_STABLE;
dreq->user_addr = user_addr;
dreq->user_count = count;
dreq->pos = pos;
dreq->pages = pages;
dreq->npages = nr_pages;
dreq->inode = inode;
dreq->ctx = get_nfs_open_context((struct nfs_open_context *)iocb->ki_filp->private_data);
if (!is_sync_kiocb(iocb))
@ -734,8 +718,9 @@ static ssize_t nfs_direct_write(struct kiocb *iocb, unsigned long user_addr, siz
nfs_begin_data_update(inode);
rpc_clnt_sigmask(clnt, &oldset);
nfs_direct_write_schedule(dreq, sync);
result = nfs_direct_wait(dreq);
result = nfs_direct_write_schedule(dreq, user_addr, count, pos, sync);
if (!result)
result = nfs_direct_wait(dreq);
rpc_clnt_sigunmask(clnt, &oldset);
return result;
@ -765,8 +750,6 @@ static ssize_t nfs_direct_write(struct kiocb *iocb, unsigned long user_addr, siz
ssize_t nfs_file_direct_read(struct kiocb *iocb, char __user *buf, size_t count, loff_t pos)
{
ssize_t retval = -EINVAL;
int page_count;
struct page **pages;
struct file *file = iocb->ki_filp;
struct address_space *mapping = file->f_mapping;
@ -788,14 +771,7 @@ ssize_t nfs_file_direct_read(struct kiocb *iocb, char __user *buf, size_t count,
if (retval)
goto out;
retval = nfs_get_user_pages(READ, (unsigned long) buf,
count, &pages);
if (retval < 0)
goto out;
page_count = retval;
retval = nfs_direct_read(iocb, (unsigned long) buf, count, pos,
pages, page_count);
retval = nfs_direct_read(iocb, (unsigned long) buf, count, pos);
if (retval > 0)
iocb->ki_pos = pos + retval;
@ -831,8 +807,6 @@ out:
ssize_t nfs_file_direct_write(struct kiocb *iocb, const char __user *buf, size_t count, loff_t pos)
{
ssize_t retval;
int page_count;
struct page **pages;
struct file *file = iocb->ki_filp;
struct address_space *mapping = file->f_mapping;
@ -860,14 +834,7 @@ ssize_t nfs_file_direct_write(struct kiocb *iocb, const char __user *buf, size_t
if (retval)
goto out;
retval = nfs_get_user_pages(WRITE, (unsigned long) buf,
count, &pages);
if (retval < 0)
goto out;
page_count = retval;
retval = nfs_direct_write(iocb, (unsigned long) buf, count,
pos, pages, page_count);
retval = nfs_direct_write(iocb, (unsigned long) buf, count, pos);
/*
* XXX: nfs_end_data_update() already ensures this file's

8
fs/nfs/file.c
View file

@ -312,7 +312,13 @@ static void nfs_invalidate_page(struct page *page, unsigned long offset)
static int nfs_release_page(struct page *page, gfp_t gfp)
{
return !nfs_wb_page(page->mapping->host, page);
if (gfp & __GFP_FS)
return !nfs_wb_page(page->mapping->host, page);
else
/*
* Avoid deadlock on nfs_wait_on_request().
*/
return 0;
}
const struct address_space_operations nfs_file_aops = {

4
fs/nfs/idmap.c
View file

@ -130,9 +130,7 @@ nfs_idmap_delete(struct nfs4_client *clp)
if (!idmap)
return;
dput(idmap->idmap_dentry);
idmap->idmap_dentry = NULL;
rpc_unlink(idmap->idmap_path);
rpc_unlink(idmap->idmap_dentry);
clp->cl_idmap = NULL;
kfree(idmap);
}

4
fs/nfs/namespace.c
View file

@ -51,7 +51,7 @@ char *nfs_path(const char *base, const struct dentry *dentry,
namelen = dentry->d_name.len;
buflen -= namelen + 1;
if (buflen < 0)
goto Elong;
goto Elong_unlock;
end -= namelen;
memcpy(end, dentry->d_name.name, namelen);
*--end = '/';
@ -68,6 +68,8 @@ char *nfs_path(const char *base, const struct dentry *dentry,
end -= namelen;
memcpy(end, base, namelen);
return end;
Elong_unlock:
spin_unlock(&dcache_lock);
Elong:
return ERR_PTR(-ENAMETOOLONG);
}

103
fs/nfs/nfs4proc.c
View file

@ -2668,7 +2668,7 @@ out:
nfs4_set_cached_acl(inode, acl);
}
static inline ssize_t nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t buflen)
static ssize_t __nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t buflen)
{
struct page *pages[NFS4ACL_MAXPAGES];
struct nfs_getaclargs args = {
@ -2721,6 +2721,19 @@ out_free:
return ret;
}
static ssize_t nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t buflen)
{
struct nfs4_exception exception = { };
ssize_t ret;
do {
ret = __nfs4_get_acl_uncached(inode, buf, buflen);
if (ret >= 0)
break;
ret = nfs4_handle_exception(NFS_SERVER(inode), ret, &exception);
} while (exception.retry);
return ret;
}
static ssize_t nfs4_proc_get_acl(struct inode *inode, void *buf, size_t buflen)
{
struct nfs_server *server = NFS_SERVER(inode);
@ -2737,7 +2750,7 @@ static ssize_t nfs4_proc_get_acl(struct inode *inode, void *buf, size_t buflen)
return nfs4_get_acl_uncached(inode, buf, buflen);
}
static int nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t buflen)
static int __nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t buflen)
{
struct nfs_server *server = NFS_SERVER(inode);
struct page *pages[NFS4ACL_MAXPAGES];
@ -2763,6 +2776,18 @@ static int nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t buflen
return ret;
}
static int nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t buflen)
{
struct nfs4_exception exception = { };
int err;
do {
err = nfs4_handle_exception(NFS_SERVER(inode),
__nfs4_proc_set_acl(inode, buf, buflen),
&exception);
} while (exception.retry);
return err;
}
static int
nfs4_async_handle_error(struct rpc_task *task, const struct nfs_server *server)
{
@ -3144,9 +3169,6 @@ static int do_vfs_lock(struct file *file, struct file_lock *fl)
default:
BUG();
}
if (res < 0)
printk(KERN_WARNING "%s: VFS is out of sync with lock manager!\n",
__FUNCTION__);
return res;
}
@ -3258,8 +3280,6 @@ static struct rpc_task *nfs4_do_unlck(struct file_lock *fl,
return ERR_PTR(-ENOMEM);
}
/* Unlock _before_ we do the RPC call */
do_vfs_lock(fl->fl_file, fl);
return rpc_run_task(NFS_CLIENT(lsp->ls_state->inode), RPC_TASK_ASYNC, &nfs4_locku_ops, data);
}
@ -3270,30 +3290,28 @@ static int nfs4_proc_unlck(struct nfs4_state *state, int cmd, struct file_lock *
struct rpc_task *task;
int status = 0;
status = nfs4_set_lock_state(state, request);
/* Unlock _before_ we do the RPC call */
request->fl_flags |= FL_EXISTS;
if (do_vfs_lock(request->fl_file, request) == -ENOENT)
goto out;
if (status != 0)
goto out;
/* Is this a delegated lock? */
if (test_bit(NFS_DELEGATED_STATE, &state->flags))
goto out_unlock;
/* Is this open_owner holding any locks on the server? */
if (test_bit(LK_STATE_IN_USE, &state->flags) == 0)
goto out_unlock;
status = nfs4_set_lock_state(state, request);
if (status != 0)
goto out_unlock;
goto out;
lsp = request->fl_u.nfs4_fl.owner;
status = -ENOMEM;
seqid = nfs_alloc_seqid(&lsp->ls_seqid);
status = -ENOMEM;
if (seqid == NULL)
goto out_unlock;
goto out;
task = nfs4_do_unlck(request, request->fl_file->private_data, lsp, seqid);
status = PTR_ERR(task);
if (IS_ERR(task))
goto out_unlock;
goto out;
status = nfs4_wait_for_completion_rpc_task(task);
rpc_release_task(task);
return status;
out_unlock:
do_vfs_lock(request->fl_file, request);
out:
return status;
}
@ -3461,10 +3479,10 @@ static int nfs4_lock_reclaim(struct nfs4_state *state, struct file_lock *request
struct nfs4_exception exception = { };
int err;
/* Cache the lock if possible... */
if (test_bit(NFS_DELEGATED_STATE, &state->flags))
return 0;
do {
/* Cache the lock if possible... */
if (test_bit(NFS_DELEGATED_STATE, &state->flags) != 0)
return 0;
err = _nfs4_do_setlk(state, F_SETLK, request, 1);
if (err != -NFS4ERR_DELAY)
break;
@ -3483,6 +3501,8 @@ static int nfs4_lock_expired(struct nfs4_state *state, struct file_lock *request
if (err != 0)
return err;
do {
if (test_bit(NFS_DELEGATED_STATE, &state->flags) != 0)
return 0;
err = _nfs4_do_setlk(state, F_SETLK, request, 0);
if (err != -NFS4ERR_DELAY)
break;
@ -3494,29 +3514,42 @@ static int nfs4_lock_expired(struct nfs4_state *state, struct file_lock *request
static int _nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock *request)
{
struct nfs4_client *clp = state->owner->so_client;
unsigned char fl_flags = request->fl_flags;
int status;
/* Is this a delegated open? */
if (NFS_I(state->inode)->delegation_state != 0) {
/* Yes: cache locks! */
status = do_vfs_lock(request->fl_file, request);
/* ...but avoid races with delegation recall... */
if (status < 0 || test_bit(NFS_DELEGATED_STATE, &state->flags))
return status;
}
down_read(&clp->cl_sem);
status = nfs4_set_lock_state(state, request);
if (status != 0)
goto out;
request->fl_flags |= FL_ACCESS;
status = do_vfs_lock(request->fl_file, request);
if (status < 0)
goto out;
down_read(&clp->cl_sem);
if (test_bit(NFS_DELEGATED_STATE, &state->flags)) {
struct nfs_inode *nfsi = NFS_I(state->inode);
/* Yes: cache locks! */
down_read(&nfsi->rwsem);
/* ...but avoid races with delegation recall... */
if (test_bit(NFS_DELEGATED_STATE, &state->flags)) {
request->fl_flags = fl_flags & ~FL_SLEEP;
status = do_vfs_lock(request->fl_file, request);
up_read(&nfsi->rwsem);
goto out_unlock;
}
up_read(&nfsi->rwsem);
}
status = _nfs4_do_setlk(state, cmd, request, 0);
if (status != 0)
goto out;
goto out_unlock;
/* Note: we always want to sleep here! */
request->fl_flags |= FL_SLEEP;
request->fl_flags = fl_flags | FL_SLEEP;
if (do_vfs_lock(request->fl_file, request) < 0)
printk(KERN_WARNING "%s: VFS is out of sync with lock manager!\n", __FUNCTION__);
out:
out_unlock:
up_read(&clp->cl_sem);
out:
request->fl_flags = fl_flags;
return status;
}

21
fs/nfs/nfs4xdr.c
View file

@ -3355,7 +3355,7 @@ static int decode_readdir(struct xdr_stream *xdr, struct rpc_rqst *req, struct n
struct kvec *iov = rcvbuf->head;
unsigned int nr, pglen = rcvbuf->page_len;
uint32_t *end, *entry, *p, *kaddr;
uint32_t len, attrlen;
uint32_t len, attrlen, xlen;
int hdrlen, recvd, status;
status = decode_op_hdr(xdr, OP_READDIR);
@ -3377,10 +3377,10 @@ static int decode_readdir(struct xdr_stream *xdr, struct rpc_rqst *req, struct n
BUG_ON(pglen + readdir->pgbase > PAGE_CACHE_SIZE);
kaddr = p = (uint32_t *) kmap_atomic(page, KM_USER0);
end = (uint32_t *) ((char *)p + pglen + readdir->pgbase);
end = p + ((pglen + readdir->pgbase) >> 2);
entry = p;
for (nr = 0; *p++; nr++) {
if (p + 3 > end)
if (end - p < 3)
goto short_pkt;
dprintk("cookie = %Lu, ", *((unsigned long long *)p));
p += 2; /* cookie */
@ -3389,18 +3389,19 @@ static int decode_readdir(struct xdr_stream *xdr, struct rpc_rqst *req, struct n
printk(KERN_WARNING "NFS: giant filename in readdir (len 0x%x)\n", len);
goto err_unmap;
}
xlen = XDR_QUADLEN(len);
if (end - p < xlen + 1)
goto short_pkt;
dprintk("filename = %*s\n", len, (char *)p);
p += XDR_QUADLEN(len);
if (p + 1 > end)
goto short_pkt;
p += xlen;
len = ntohl(*p++); /* bitmap length */
if (end - p < len + 1)
goto short_pkt;
p += len;
if (p + 1 > end)
goto short_pkt;
attrlen = XDR_QUADLEN(ntohl(*p++));
p += attrlen; /* attributes */
if (p + 2 > end)
if (end - p < attrlen + 2)
goto short_pkt;
p += attrlen; /* attributes */
entry = p;
}
if (!nr && (entry[0] != 0 || entry[1] == 0))

25
fs/nfs/read.c
View file

@ -63,7 +63,7 @@ struct nfs_read_data *nfs_readdata_alloc(unsigned int pagecount)
return p;
}
void nfs_readdata_free(struct nfs_read_data *p)
static void nfs_readdata_free(struct nfs_read_data *p)
{
if (p && (p->pagevec != &p->page_array[0]))
kfree(p->pagevec);
@ -116,10 +116,17 @@ static void nfs_readpage_truncate_uninitialised_page(struct nfs_read_data *data)
pages = &data->args.pages[base >> PAGE_CACHE_SHIFT];
base &= ~PAGE_CACHE_MASK;
pglen = PAGE_CACHE_SIZE - base;
if (pglen < remainder)
for (;;) {
if (remainder <= pglen) {
memclear_highpage_flush(*pages, base, remainder);
break;
}
memclear_highpage_flush(*pages, base, pglen);
else
memclear_highpage_flush(*pages, base, remainder);
pages++;
remainder -= pglen;
pglen = PAGE_CACHE_SIZE;
base = 0;
}
}
/*
@ -476,6 +483,8 @@ static void nfs_readpage_set_pages_uptodate(struct nfs_read_data *data)
unsigned int base = data->args.pgbase;
struct page **pages;
if (data->res.eof)
count = data->args.count;
if (unlikely(count == 0))
return;
pages = &data->args.pages[base >> PAGE_CACHE_SHIFT];
@ -483,11 +492,7 @@ static void nfs_readpage_set_pages_uptodate(struct nfs_read_data *data)
count += base;
for (;count >= PAGE_CACHE_SIZE; count -= PAGE_CACHE_SIZE, pages++)
SetPageUptodate(*pages);
/*
* Was this an eof or a short read? If the latter, don't mark the page
* as uptodate yet.
*/
if (count > 0 && (data->res.eof || data->args.count == data->res.count))
if (count != 0)
SetPageUptodate(*pages);
}
@ -502,6 +507,8 @@ static void nfs_readpage_set_pages_error(struct nfs_read_data *data)
count += base;
for (;count >= PAGE_CACHE_SIZE; count -= PAGE_CACHE_SIZE, pages++)
SetPageError(*pages);
if (count != 0)
SetPageError(*pages);
}
/*

22
fs/nfs/write.c
View file

@ -137,7 +137,7 @@ struct nfs_write_data *nfs_writedata_alloc(unsigned int pagecount)
return p;
}
void nfs_writedata_free(struct nfs_write_data *p)
static void nfs_writedata_free(struct nfs_write_data *p)
{
if (p && (p->pagevec != &p->page_array[0]))
kfree(p->pagevec);
@ -578,7 +578,7 @@ static int nfs_wait_on_requests(struct inode *inode, unsigned long idx_start, un
return ret;
}
static void nfs_cancel_requests(struct list_head *head)
static void nfs_cancel_dirty_list(struct list_head *head)
{
struct nfs_page *req;
while(!list_empty(head)) {
@ -589,6 +589,19 @@ static void nfs_cancel_requests(struct list_head *head)
}
}
static void nfs_cancel_commit_list(struct list_head *head)
{
struct nfs_page *req;
while(!list_empty(head)) {
req = nfs_list_entry(head->next);
nfs_list_remove_request(req);
nfs_inode_remove_request(req);
nfs_clear_page_writeback(req);
dec_zone_page_state(req->wb_page, NR_UNSTABLE_NFS);
}
}
/*
* nfs_scan_dirty - Scan an inode for dirty requests
* @inode: NFS inode to scan
@ -1381,6 +1394,7 @@ nfs_commit_list(struct inode *inode, struct list_head *head, int how)
nfs_list_remove_request(req);
nfs_mark_request_commit(req);
nfs_clear_page_writeback(req);
dec_zone_page_state(req->wb_page, NR_UNSTABLE_NFS);
}
return -ENOMEM;
}
@ -1499,7 +1513,7 @@ int nfs_sync_inode_wait(struct inode *inode, unsigned long idx_start,
if (pages != 0) {
spin_unlock(&nfsi->req_lock);
if (how & FLUSH_INVALIDATE)
nfs_cancel_requests(&head);
nfs_cancel_dirty_list(&head);
else
ret = nfs_flush_list(inode, &head, pages, how);
spin_lock(&nfsi->req_lock);
@ -1512,7 +1526,7 @@ int nfs_sync_inode_wait(struct inode *inode, unsigned long idx_start,
break;
if (how & FLUSH_INVALIDATE) {
spin_unlock(&nfsi->req_lock);
nfs_cancel_requests(&head);
nfs_cancel_commit_list(&head);
spin_lock(&nfsi->req_lock);
continue;
}

8
fs/nfsd/nfs4proc.c
View file

@ -721,6 +721,12 @@ nfsd4_proc_null(struct svc_rqst *rqstp, void *argp, void *resp)
return nfs_ok;
}
static inline void nfsd4_increment_op_stats(u32 opnum)
{
if (opnum >= FIRST_NFS4_OP && opnum <= LAST_NFS4_OP)
nfsdstats.nfs4_opcount[opnum]++;
}
/*
* COMPOUND call.
@ -930,6 +936,8 @@ encode_op:
/* XXX Ugh, we need to get rid of this kind of special case: */
if (op->opnum == OP_READ && op->u.read.rd_filp)
fput(op->u.read.rd_filp);
nfsd4_increment_op_stats(op->opnum);
}
out:

20
fs/nfsd/nfsfh.c
View file

@ -187,6 +187,11 @@ fh_verify(struct svc_rqst *rqstp, struct svc_fh *fhp, int type, int access)
goto out;
}
/* Set user creds for this exportpoint */
error = nfserrno(nfsd_setuser(rqstp, exp));
if (error)
goto out;
/*
* Look up the dentry using the NFS file handle.
*/
@ -241,16 +246,17 @@ fh_verify(struct svc_rqst *rqstp, struct svc_fh *fhp, int type, int access)
dprintk("nfsd: fh_verify - just checking\n");
dentry = fhp->fh_dentry;
exp = fhp->fh_export;
/* Set user creds for this exportpoint; necessary even
* in the "just checking" case because this may be a
* filehandle that was created by fh_compose, and that
* is about to be used in another nfsv4 compound
* operation */
error = nfserrno(nfsd_setuser(rqstp, exp));
if (error)
goto out;
}
cache_get(&exp->h);
/* Set user creds for this exportpoint; necessary even in the "just
* checking" case because this may be a filehandle that was created by
* fh_compose, and that is about to be used in another nfsv4 compound
* operation */
error = nfserrno(nfsd_setuser(rqstp, exp));
if (error)
goto out;
error = nfsd_mode_check(rqstp, dentry->d_inode->i_mode, type);
if (error)

10
fs/nfsd/stats.c
View file

@ -72,6 +72,16 @@ static int nfsd_proc_show(struct seq_file *seq, void *v)
/* show my rpc info */
svc_seq_show(seq, &nfsd_svcstats);
#ifdef CONFIG_NFSD_V4
/* Show count for individual nfsv4 operations */
/* Writing operation numbers 0 1 2 also for maintaining uniformity */
seq_printf(seq,"proc4ops %u", LAST_NFS4_OP + 1);
for (i = 0; i <= LAST_NFS4_OP; i++)
seq_printf(seq, " %u", nfsdstats.nfs4_opcount[i]);
seq_putc(seq, '\n');
#endif
return 0;
}

1
fs/ocfs2/dlm/dlmmaster.c
View file

@ -2375,7 +2375,6 @@ leave:
mlog(0, "returning %d\n", ret);
return ret;
}
EXPORT_SYMBOL_GPL(dlm_migrate_lockres);
int dlm_lock_basts_flushed(struct dlm_ctxt *dlm, struct dlm_lock *lock)
{

43
fs/ocfs2/dlm/dlmunlock.c
View file

@ -155,7 +155,7 @@ static enum dlm_status dlmunlock_common(struct dlm_ctxt *dlm,
else
status = dlm_get_unlock_actions(dlm, res, lock, lksb, &actions);
if (status != DLM_NORMAL)
if (status != DLM_NORMAL && (status != DLM_CANCELGRANT || !master_node))
goto leave;
/* By now this has been masked out of cancel requests. */
@ -183,8 +183,7 @@ static enum dlm_status dlmunlock_common(struct dlm_ctxt *dlm,
spin_lock(&lock->spinlock);
/* if the master told us the lock was already granted,
* let the ast handle all of these actions */
if (status == DLM_NORMAL &&
lksb->status == DLM_CANCELGRANT) {
if (status == DLM_CANCELGRANT) {
actions &= ~(DLM_UNLOCK_REMOVE_LOCK|
DLM_UNLOCK_REGRANT_LOCK|
DLM_UNLOCK_CLEAR_CONVERT_TYPE);
@ -349,14 +348,9 @@ static enum dlm_status dlm_send_remote_unlock_request(struct dlm_ctxt *dlm,
vec, veclen, owner, &status);
if (tmpret >= 0) {
// successfully sent and received
if (status == DLM_CANCELGRANT)
ret = DLM_NORMAL;
else if (status == DLM_FORWARD) {
if (status == DLM_FORWARD)
mlog(0, "master was in-progress. retry\n");
ret = DLM_FORWARD;
} else
ret = status;
lksb->status = status;
ret = status;
} else {
mlog_errno(tmpret);
if (dlm_is_host_down(tmpret)) {
@ -372,7 +366,6 @@ static enum dlm_status dlm_send_remote_unlock_request(struct dlm_ctxt *dlm,
/* something bad. this will BUG in ocfs2 */
ret = dlm_err_to_dlm_status(tmpret);
}
lksb->status = ret;
}
return ret;
@ -483,6 +476,10 @@ int dlm_unlock_lock_handler(struct o2net_msg *msg, u32 len, void *data)
/* lock was found on queue */
lksb = lock->lksb;
if (flags & (LKM_VALBLK|LKM_PUT_LVB) &&
lock->ml.type != LKM_EXMODE)
flags &= ~(LKM_VALBLK|LKM_PUT_LVB);
/* unlockast only called on originating node */
if (flags & LKM_PUT_LVB) {
lksb->flags |= DLM_LKSB_PUT_LVB;
@ -507,11 +504,8 @@ not_found:
"cookie=%u:%llu\n",
dlm_get_lock_cookie_node(unlock->cookie),
dlm_get_lock_cookie_seq(unlock->cookie));
else {
/* send the lksb->status back to the other node */
status = lksb->status;
else
dlm_lock_put(lock);
}
leave:
if (res)
@ -533,26 +527,22 @@ static enum dlm_status dlm_get_cancel_actions(struct dlm_ctxt *dlm,
if (dlm_lock_on_list(&res->blocked, lock)) {
/* cancel this outright */
lksb->status = DLM_NORMAL;
status = DLM_NORMAL;
*actions = (DLM_UNLOCK_CALL_AST |
DLM_UNLOCK_REMOVE_LOCK);
} else if (dlm_lock_on_list(&res->converting, lock)) {
/* cancel the request, put back on granted */
lksb->status = DLM_NORMAL;
status = DLM_NORMAL;
*actions = (DLM_UNLOCK_CALL_AST |
DLM_UNLOCK_REMOVE_LOCK |
DLM_UNLOCK_REGRANT_LOCK |
DLM_UNLOCK_CLEAR_CONVERT_TYPE);
} else if (dlm_lock_on_list(&res->granted, lock)) {
/* too late, already granted. DLM_CANCELGRANT */
lksb->status = DLM_CANCELGRANT;
status = DLM_NORMAL;
/* too late, already granted. */
status = DLM_CANCELGRANT;
*actions = DLM_UNLOCK_CALL_AST;
} else {
mlog(ML_ERROR, "lock to cancel is not on any list!\n");
lksb->status = DLM_IVLOCKID;
status = DLM_IVLOCKID;
*actions = 0;
}
@ -569,13 +559,11 @@ static enum dlm_status dlm_get_unlock_actions(struct dlm_ctxt *dlm,
/* unlock request */
if (!dlm_lock_on_list(&res->granted, lock)) {
lksb->status = DLM_DENIED;
status = DLM_DENIED;
dlm_error(status);
*actions = 0;
} else {
/* unlock granted lock */
lksb->status = DLM_NORMAL;
status = DLM_NORMAL;
*actions = (DLM_UNLOCK_FREE_LOCK |
DLM_UNLOCK_CALL_AST |
@ -632,6 +620,8 @@ retry:
spin_lock(&res->spinlock);
is_master = (res->owner == dlm->node_num);
if (flags & LKM_VALBLK && lock->ml.type != LKM_EXMODE)
flags &= ~LKM_VALBLK;
spin_unlock(&res->spinlock);
if (is_master) {
@ -665,7 +655,7 @@ retry:
}
if (call_ast) {
mlog(0, "calling unlockast(%p, %d)\n", data, lksb->status);
mlog(0, "calling unlockast(%p, %d)\n", data, status);
if (is_master) {
/* it is possible that there is one last bast
* pending. make sure it is flushed, then
@ -677,9 +667,12 @@ retry:
wait_event(dlm->ast_wq,
dlm_lock_basts_flushed(dlm, lock));
}
(*unlockast)(data, lksb->status);
(*unlockast)(data, status);
}
if (status == DLM_CANCELGRANT)
status = DLM_NORMAL;
if (status == DLM_NORMAL) {
mlog(0, "kicking the thread\n");
dlm_kick_thread(dlm, res);

8
fs/ocfs2/localalloc.c
View file

@ -840,6 +840,12 @@ static int ocfs2_local_alloc_new_window(struct ocfs2_super *osb,
mlog(0, "Allocating %u clusters for a new window.\n",
ocfs2_local_alloc_window_bits(osb));
/* Instruct the allocation code to try the most recently used
* cluster group. We'll re-record the group used this pass
* below. */
ac->ac_last_group = osb->la_last_gd;
/* we used the generic suballoc reserve function, but we set
* everything up nicely, so there's no reason why we can't use
* the more specific cluster api to claim bits. */
@ -852,6 +858,8 @@ static int ocfs2_local_alloc_new_window(struct ocfs2_super *osb,
goto bail;
}
osb->la_last_gd = ac->ac_last_group;
la->la_bm_off = cpu_to_le32(cluster_off);
alloc->id1.bitmap1.i_total = cpu_to_le32(cluster_count);
/* just in case... In the future when we find space ourselves,

2
fs/ocfs2/ocfs2.h
View file

@ -197,7 +197,6 @@ struct ocfs2_super
struct ocfs2_node_map recovery_map;
struct ocfs2_node_map umount_map;
u32 num_clusters;
u64 root_blkno;
u64 system_dir_blkno;
u64 bitmap_blkno;
@ -237,6 +236,7 @@ struct ocfs2_super
enum ocfs2_local_alloc_state local_alloc_state;
struct buffer_head *local_alloc_bh;
u64 la_last_gd;
/* Next two fields are for local node slot recovery during
* mount. */

261
fs/ocfs2/suballoc.c
View file

@ -70,12 +70,6 @@ static int ocfs2_block_group_search(struct inode *inode,
struct buffer_head *group_bh,
u32 bits_wanted, u32 min_bits,
u16 *bit_off, u16 *bits_found);
static int ocfs2_search_chain(struct ocfs2_alloc_context *ac,
u32 bits_wanted,
u32 min_bits,
u16 *bit_off,
unsigned int *num_bits,
u64 *bg_blkno);
static int ocfs2_claim_suballoc_bits(struct ocfs2_super *osb,
struct ocfs2_alloc_context *ac,
u32 bits_wanted,
@ -85,11 +79,6 @@ static int ocfs2_claim_suballoc_bits(struct ocfs2_super *osb,
u64 *bg_blkno);
static int ocfs2_test_bg_bit_allocatable(struct buffer_head *bg_bh,
int nr);
static int ocfs2_block_group_find_clear_bits(struct ocfs2_super *osb,
struct buffer_head *bg_bh,
unsigned int bits_wanted,
u16 *bit_off,
u16 *bits_found);
static inline int ocfs2_block_group_set_bits(struct ocfs2_journal_handle *handle,
struct inode *alloc_inode,
struct ocfs2_group_desc *bg,
@ -143,6 +132,64 @@ static u32 ocfs2_bits_per_group(struct ocfs2_chain_list *cl)
return (u32)le16_to_cpu(cl->cl_cpg) * (u32)le16_to_cpu(cl->cl_bpc);
}
/* somewhat more expensive than our other checks, so use sparingly. */
static int ocfs2_check_group_descriptor(struct super_block *sb,
struct ocfs2_dinode *di,
struct ocfs2_group_desc *gd)
{
unsigned int max_bits;
if (!OCFS2_IS_VALID_GROUP_DESC(gd)) {
OCFS2_RO_ON_INVALID_GROUP_DESC(sb, gd);
return -EIO;
}
if (di->i_blkno != gd->bg_parent_dinode) {
ocfs2_error(sb, "Group descriptor # %llu has bad parent "
"pointer (%llu, expected %llu)",
(unsigned long long)le64_to_cpu(gd->bg_blkno),
(unsigned long long)le64_to_cpu(gd->bg_parent_dinode),
(unsigned long long)le64_to_cpu(di->i_blkno));
return -EIO;
}
max_bits = le16_to_cpu(di->id2.i_chain.cl_cpg) * le16_to_cpu(di->id2.i_chain.cl_bpc);
if (le16_to_cpu(gd->bg_bits) > max_bits) {
ocfs2_error(sb, "Group descriptor # %llu has bit count of %u",
(unsigned long long)le64_to_cpu(gd->bg_blkno),
le16_to_cpu(gd->bg_bits));
return -EIO;
}
if (le16_to_cpu(gd->bg_chain) >=
le16_to_cpu(di->id2.i_chain.cl_next_free_rec)) {
ocfs2_error(sb, "Group descriptor # %llu has bad chain %u",
(unsigned long long)le64_to_cpu(gd->bg_blkno),
le16_to_cpu(gd->bg_chain));
return -EIO;
}
if (le16_to_cpu(gd->bg_free_bits_count) > le16_to_cpu(gd->bg_bits)) {
ocfs2_error(sb, "Group descriptor # %llu has bit count %u but "
"claims that %u are free",
(unsigned long long)le64_to_cpu(gd->bg_blkno),
le16_to_cpu(gd->bg_bits),
le16_to_cpu(gd->bg_free_bits_count));
return -EIO;
}
if (le16_to_cpu(gd->bg_bits) > (8 * le16_to_cpu(gd->bg_size))) {
ocfs2_error(sb, "Group descriptor # %llu has bit count %u but "
"max bitmap bits of %u",
(unsigned long long)le64_to_cpu(gd->bg_blkno),
le16_to_cpu(gd->bg_bits),
8 * le16_to_cpu(gd->bg_size));
return -EIO;
}
return 0;
}
static int ocfs2_block_group_fill(struct ocfs2_journal_handle *handle,
struct inode *alloc_inode,
struct buffer_head *bg_bh,
@ -663,6 +710,7 @@ static int ocfs2_test_bg_bit_allocatable(struct buffer_head *bg_bh,
static int ocfs2_block_group_find_clear_bits(struct ocfs2_super *osb,
struct buffer_head *bg_bh,
unsigned int bits_wanted,
unsigned int total_bits,
u16 *bit_off,
u16 *bits_found)
{
@ -679,10 +727,8 @@ static int ocfs2_block_group_find_clear_bits(struct ocfs2_super *osb,
found = start = best_offset = best_size = 0;
bitmap = bg->bg_bitmap;
while((offset = ocfs2_find_next_zero_bit(bitmap,
le16_to_cpu(bg->bg_bits),
start)) != -1) {
if (offset == le16_to_cpu(bg->bg_bits))
while((offset = ocfs2_find_next_zero_bit(bitmap, total_bits, start)) != -1) {
if (offset == total_bits)
break;
if (!ocfs2_test_bg_bit_allocatable(bg_bh, offset)) {
@ -911,14 +957,35 @@ static int ocfs2_cluster_group_search(struct inode *inode,
{
int search = -ENOSPC;
int ret;
struct ocfs2_group_desc *bg = (struct ocfs2_group_desc *) group_bh->b_data;
struct ocfs2_group_desc *gd = (struct ocfs2_group_desc *) group_bh->b_data;
u16 tmp_off, tmp_found;
unsigned int max_bits, gd_cluster_off;
BUG_ON(!ocfs2_is_cluster_bitmap(inode));
if (bg->bg_free_bits_count) {
if (gd->bg_free_bits_count) {
max_bits = le16_to_cpu(gd->bg_bits);
/* Tail groups in cluster bitmaps which aren't cpg
* aligned are prone to partial extention by a failed
* fs resize. If the file system resize never got to
* update the dinode cluster count, then we don't want
* to trust any clusters past it, regardless of what
* the group descriptor says. */
gd_cluster_off = ocfs2_blocks_to_clusters(inode->i_sb,
le64_to_cpu(gd->bg_blkno));
if ((gd_cluster_off + max_bits) >
OCFS2_I(inode)->ip_clusters) {
max_bits = OCFS2_I(inode)->ip_clusters - gd_cluster_off;
mlog(0, "Desc %llu, bg_bits %u, clusters %u, use %u\n",
(unsigned long long)le64_to_cpu(gd->bg_blkno),
le16_to_cpu(gd->bg_bits),
OCFS2_I(inode)->ip_clusters, max_bits);
}
ret = ocfs2_block_group_find_clear_bits(OCFS2_SB(inode->i_sb),
group_bh, bits_wanted,
max_bits,
&tmp_off, &tmp_found);
if (ret)
return ret;
@ -951,17 +1018,109 @@ static int ocfs2_block_group_search(struct inode *inode,
if (bg->bg_free_bits_count)
ret = ocfs2_block_group_find_clear_bits(OCFS2_SB(inode->i_sb),
group_bh, bits_wanted,
le16_to_cpu(bg->bg_bits),
bit_off, bits_found);
return ret;
}
static int ocfs2_alloc_dinode_update_counts(struct inode *inode,
struct ocfs2_journal_handle *handle,
struct buffer_head *di_bh,
u32 num_bits,
u16 chain)
{
int ret;
u32 tmp_used;
struct ocfs2_dinode *di = (struct ocfs2_dinode *) di_bh->b_data;
struct ocfs2_chain_list *cl = (struct ocfs2_chain_list *) &di->id2.i_chain;
ret = ocfs2_journal_access(handle, inode, di_bh,
OCFS2_JOURNAL_ACCESS_WRITE);
if (ret < 0) {
mlog_errno(ret);
goto out;
}
tmp_used = le32_to_cpu(di->id1.bitmap1.i_used);
di->id1.bitmap1.i_used = cpu_to_le32(num_bits + tmp_used);
le32_add_cpu(&cl->cl_recs[chain].c_free, -num_bits);
ret = ocfs2_journal_dirty(handle, di_bh);
if (ret < 0)
mlog_errno(ret);
out:
return ret;
}
static int ocfs2_search_one_group(struct ocfs2_alloc_context *ac,
u32 bits_wanted,
u32 min_bits,
u16 *bit_off,
unsigned int *num_bits,
u64 gd_blkno,
u16 *bits_left)
{
int ret;
u16 found;
struct buffer_head *group_bh = NULL;
struct ocfs2_group_desc *gd;
struct inode *alloc_inode = ac->ac_inode;
struct ocfs2_journal_handle *handle = ac->ac_handle;
ret = ocfs2_read_block(OCFS2_SB(alloc_inode->i_sb), gd_blkno,
&group_bh, OCFS2_BH_CACHED, alloc_inode);
if (ret < 0) {
mlog_errno(ret);
return ret;
}
gd = (struct ocfs2_group_desc *) group_bh->b_data;
if (!OCFS2_IS_VALID_GROUP_DESC(gd)) {
OCFS2_RO_ON_INVALID_GROUP_DESC(alloc_inode->i_sb, gd);
ret = -EIO;
goto out;
}
ret = ac->ac_group_search(alloc_inode, group_bh, bits_wanted, min_bits,
bit_off, &found);
if (ret < 0) {
if (ret != -ENOSPC)
mlog_errno(ret);
goto out;
}
*num_bits = found;
ret = ocfs2_alloc_dinode_update_counts(alloc_inode, handle, ac->ac_bh,
*num_bits,
le16_to_cpu(gd->bg_chain));
if (ret < 0) {
mlog_errno(ret);
goto out;
}
ret = ocfs2_block_group_set_bits(handle, alloc_inode, gd, group_bh,
*bit_off, *num_bits);
if (ret < 0)
mlog_errno(ret);
*bits_left = le16_to_cpu(gd->bg_free_bits_count);
out:
brelse(group_bh);
return ret;
}
static int ocfs2_search_chain(struct ocfs2_alloc_context *ac,
u32 bits_wanted,
u32 min_bits,
u16 *bit_off,
unsigned int *num_bits,
u64 *bg_blkno)
u64 *bg_blkno,
u16 *bits_left)
{
int status;
u16 chain, tmp_bits;
@ -988,9 +1147,9 @@ static int ocfs2_search_chain(struct ocfs2_alloc_context *ac,
goto bail;
}
bg = (struct ocfs2_group_desc *) group_bh->b_data;
if (!OCFS2_IS_VALID_GROUP_DESC(bg)) {
OCFS2_RO_ON_INVALID_GROUP_DESC(alloc_inode->i_sb, bg);
status = -EIO;
status = ocfs2_check_group_descriptor(alloc_inode->i_sb, fe, bg);
if (status) {
mlog_errno(status);
goto bail;
}
@ -1018,9 +1177,9 @@ static int ocfs2_search_chain(struct ocfs2_alloc_context *ac,
goto bail;
}
bg = (struct ocfs2_group_desc *) group_bh->b_data;
if (!OCFS2_IS_VALID_GROUP_DESC(bg)) {
OCFS2_RO_ON_INVALID_GROUP_DESC(alloc_inode->i_sb, bg);
status = -EIO;
status = ocfs2_check_group_descriptor(alloc_inode->i_sb, fe, bg);
if (status) {
mlog_errno(status);
goto bail;
}
}
@ -1099,6 +1258,7 @@ static int ocfs2_search_chain(struct ocfs2_alloc_context *ac,
(unsigned long long)fe->i_blkno);
*bg_blkno = le64_to_cpu(bg->bg_blkno);
*bits_left = le16_to_cpu(bg->bg_free_bits_count);
bail:
if (group_bh)
brelse(group_bh);
@ -1120,6 +1280,8 @@ static int ocfs2_claim_suballoc_bits(struct ocfs2_super *osb,
{
int status;
u16 victim, i;
u16 bits_left = 0;
u64 hint_blkno = ac->ac_last_group;
struct ocfs2_chain_list *cl;
struct ocfs2_dinode *fe;
@ -1146,6 +1308,28 @@ static int ocfs2_claim_suballoc_bits(struct ocfs2_super *osb,
goto bail;
}
if (hint_blkno) {
/* Attempt to short-circuit the usual search mechanism
* by jumping straight to the most recently used
* allocation group. This helps us mantain some
* contiguousness across allocations. */
status = ocfs2_search_one_group(ac, bits_wanted, min_bits,
bit_off, num_bits,
hint_blkno, &bits_left);
if (!status) {
/* Be careful to update *bg_blkno here as the
* caller is expecting it to be filled in, and
* ocfs2_search_one_group() won't do that for
* us. */
*bg_blkno = hint_blkno;
goto set_hint;
}
if (status < 0 && status != -ENOSPC) {
mlog_errno(status);
goto bail;
}
}
cl = (struct ocfs2_chain_list *) &fe->id2.i_chain;
victim = ocfs2_find_victim_chain(cl);
@ -1153,9 +1337,9 @@ static int ocfs2_claim_suballoc_bits(struct ocfs2_super *osb,
ac->ac_allow_chain_relink = 1;
status = ocfs2_search_chain(ac, bits_wanted, min_bits, bit_off,
num_bits, bg_blkno);
num_bits, bg_blkno, &bits_left);
if (!status)
goto bail;
goto set_hint;
if (status < 0 && status != -ENOSPC) {
mlog_errno(status);
goto bail;
@ -1177,8 +1361,8 @@ static int ocfs2_claim_suballoc_bits(struct ocfs2_super *osb,
ac->ac_chain = i;
status = ocfs2_search_chain(ac, bits_wanted, min_bits,
bit_off, num_bits,
bg_blkno);
bit_off, num_bits, bg_blkno,
&bits_left);
if (!status)
break;
if (status < 0 && status != -ENOSPC) {
@ -1186,8 +1370,19 @@ static int ocfs2_claim_suballoc_bits(struct ocfs2_super *osb,
goto bail;
}
}
bail:
set_hint:
if (status != -ENOSPC) {
/* If the next search of this group is not likely to
* yield a suitable extent, then we reset the last
* group hint so as to not waste a disk read */
if (bits_left < min_bits)
ac->ac_last_group = 0;
else
ac->ac_last_group = *bg_blkno;
}
bail:
mlog_exit(status);
return status;
}
@ -1341,7 +1536,7 @@ int ocfs2_claim_clusters(struct ocfs2_super *osb,
{
int status;
unsigned int bits_wanted = ac->ac_bits_wanted - ac->ac_bits_given;
u64 bg_blkno;
u64 bg_blkno = 0;
u16 bg_bit_off;
mlog_entry_void();
@ -1494,9 +1689,9 @@ static int ocfs2_free_suballoc_bits(struct ocfs2_journal_handle *handle,
}
group = (struct ocfs2_group_desc *) group_bh->b_data;
if (!OCFS2_IS_VALID_GROUP_DESC(group)) {
OCFS2_RO_ON_INVALID_GROUP_DESC(alloc_inode->i_sb, group);
status = -EIO;
status = ocfs2_check_group_descriptor(alloc_inode->i_sb, fe, group);
if (status) {
mlog_errno(status);
goto bail;
}
BUG_ON((count + start_bit) > le16_to_cpu(group->bg_bits));

2
fs/ocfs2/suballoc.h
View file

@ -49,6 +49,8 @@ struct ocfs2_alloc_context {
u16 ac_chain;
int ac_allow_chain_relink;
group_search_t *ac_group_search;
u64 ac_last_group;
};
void ocfs2_free_alloc_context(struct ocfs2_alloc_context *ac);

8
fs/ocfs2/super.c
View file

@ -1442,8 +1442,13 @@ static int ocfs2_initialize_super(struct super_block *sb,
osb->bitmap_blkno = OCFS2_I(inode)->ip_blkno;
/* We don't have a cluster lock on the bitmap here because
* we're only interested in static information and the extra
* complexity at mount time isn't worht it. Don't pass the
* inode in to the read function though as we don't want it to
* be put in the cache. */
status = ocfs2_read_block(osb, osb->bitmap_blkno, &bitmap_bh, 0,
inode);
NULL);
iput(inode);
if (status < 0) {
mlog_errno(status);
@ -1452,7 +1457,6 @@ static int ocfs2_initialize_super(struct super_block *sb,
di = (struct ocfs2_dinode *) bitmap_bh->b_data;
osb->bitmap_cpg = le16_to_cpu(di->id2.i_chain.cl_cpg);
osb->num_clusters = le32_to_cpu(di->id1.bitmap1.i_total);
brelse(bitmap_bh);
mlog(0, "cluster bitmap inode: %llu, clusters per group: %u\n",
(unsigned long long)osb->bitmap_blkno, osb->bitmap_cpg);

2
fs/partitions/Kconfig
View file

@ -99,7 +99,7 @@ config IBM_PARTITION
config MAC_PARTITION
bool "Macintosh partition map support" if PARTITION_ADVANCED
default y if MAC
default y if (MAC || PPC_PMAC)
help
Say Y here if you would like to use hard disks under Linux which
were partitioned on a Macintosh.

1
fs/partitions/check.c
View file

@ -339,6 +339,7 @@ void add_partition(struct gendisk *disk, int part, sector_t start, sector_t len)
p->start_sect = start;
p->nr_sects = len;
p->partno = part;
p->policy = disk->policy;
if (isdigit(disk->kobj.name[strlen(disk->kobj.name)-1]))
snprintf(p->kobj.name,KOBJ_NAME_LEN,"%sp%d",disk->kobj.name,part);

2
fs/partitions/sun.c
View file

@ -74,7 +74,7 @@ int sun_partition(struct parsed_partitions *state, struct block_device *bdev)
spc = be16_to_cpu(label->ntrks) * be16_to_cpu(label->nsect);
for (i = 0; i < 8; i++, p++) {
unsigned long st_sector;
int num_sectors;
unsigned int num_sectors;
st_sector = be32_to_cpu(p->start_cylinder) * spc;
num_sectors = be32_to_cpu(p->num_sectors);

6
fs/proc/array.c
View file

@ -74,6 +74,7 @@
#include <linux/times.h>
#include <linux/cpuset.h>
#include <linux/rcupdate.h>
#include <linux/delayacct.h>
#include <asm/uaccess.h>
#include <asm/pgtable.h>
@ -411,7 +412,7 @@ static int do_task_stat(struct task_struct *task, char * buffer, int whole)
res = sprintf(buffer,"%d (%s) %c %d %d %d %d %d %lu %lu \
%lu %lu %lu %lu %lu %ld %ld %ld %ld %d 0 %llu %lu %ld %lu %lu %lu %lu %lu \
%lu %lu %lu %lu %lu %lu %lu %lu %d %d %lu %lu\n",
%lu %lu %lu %lu %lu %lu %lu %lu %d %d %lu %lu %llu\n",
task->pid,
tcomm,
state,
@ -455,7 +456,8 @@ static int do_task_stat(struct task_struct *task, char * buffer, int whole)
task->exit_signal,
task_cpu(task),
task->rt_priority,
task->policy);
task->policy,
(unsigned long long)delayacct_blkio_ticks(task));
if(mm)
mmput(mm);
return res;

33
fs/proc/base.c
View file

@ -551,6 +551,27 @@ static int proc_fd_access_allowed(struct inode *inode)
return allowed;
}
static int proc_setattr(struct dentry *dentry, struct iattr *attr)
{
int error;
struct inode *inode = dentry->d_inode;
if (attr->ia_valid & ATTR_MODE)
return -EPERM;
error = inode_change_ok(inode, attr);
if (!error) {
error = security_inode_setattr(dentry, attr);
if (!error)
error = inode_setattr(inode, attr);
}
return error;
}
static struct inode_operations proc_def_inode_operations = {
.setattr = proc_setattr,
};
extern struct seq_operations mounts_op;
struct proc_mounts {
struct seq_file m;
@ -1111,7 +1132,8 @@ out:
static struct inode_operations proc_pid_link_inode_operations = {
.readlink = proc_pid_readlink,
.follow_link = proc_pid_follow_link
.follow_link = proc_pid_follow_link,
.setattr = proc_setattr,
};
static int proc_readfd(struct file * filp, void * dirent, filldir_t filldir)
@ -1285,6 +1307,7 @@ static struct inode *proc_pid_make_inode(struct super_block * sb, struct task_st
ei = PROC_I(inode);
inode->i_mtime = inode->i_atime = inode->i_ctime = CURRENT_TIME;
inode->i_ino = fake_ino(task->pid, ino);
inode->i_op = &proc_def_inode_operations;
/*
* grab the reference to task.
@ -1339,6 +1362,7 @@ static int pid_revalidate(struct dentry *dentry, struct nameidata *nd)
inode->i_uid = 0;
inode->i_gid = 0;
}
inode->i_mode &= ~(S_ISUID | S_ISGID);
security_task_to_inode(task, inode);
put_task_struct(task);
return 1;
@ -1389,6 +1413,7 @@ static int tid_fd_revalidate(struct dentry *dentry, struct nameidata *nd)
inode->i_uid = 0;
inode->i_gid = 0;
}
inode->i_mode &= ~(S_ISUID | S_ISGID);
security_task_to_inode(task, inode);
put_task_struct(task);
return 1;
@ -1527,11 +1552,13 @@ static struct file_operations proc_task_operations = {
*/
static struct inode_operations proc_fd_inode_operations = {
.lookup = proc_lookupfd,
.setattr = proc_setattr,
};
static struct inode_operations proc_task_inode_operations = {
.lookup = proc_task_lookup,
.getattr = proc_task_getattr,
.setattr = proc_setattr,
};
#ifdef CONFIG_SECURITY
@ -1845,11 +1872,13 @@ static struct file_operations proc_tid_base_operations = {
static struct inode_operations proc_tgid_base_inode_operations = {
.lookup = proc_tgid_base_lookup,
.getattr = pid_getattr,
.setattr = proc_setattr,
};
static struct inode_operations proc_tid_base_inode_operations = {
.lookup = proc_tid_base_lookup,
.getattr = pid_getattr,
.setattr = proc_setattr,
};
#ifdef CONFIG_SECURITY
@ -1892,11 +1921,13 @@ static struct dentry *proc_tid_attr_lookup(struct inode *dir,
static struct inode_operations proc_tgid_attr_inode_operations = {
.lookup = proc_tgid_attr_lookup,
.getattr = pid_getattr,
.setattr = proc_setattr,
};
static struct inode_operations proc_tid_attr_inode_operations = {
.lookup = proc_tid_attr_lookup,
.getattr = pid_getattr,
.setattr = proc_setattr,
};
#endif

2
fs/proc/inode.c
View file

@ -192,7 +192,7 @@ int proc_fill_super(struct super_block *s, void *data, int silent)
{
struct inode * root_inode;
s->s_flags |= MS_NODIRATIME;
s->s_flags |= MS_NODIRATIME | MS_NOSUID | MS_NOEXEC;
s->s_blocksize = 1024;
s->s_blocksize_bits = 10;
s->s_magic = PROC_SUPER_MAGIC;

4
fs/proc/kcore.c
View file

@ -42,8 +42,6 @@ const struct file_operations proc_kcore_operations = {
#define kc_offset_to_vaddr(o) ((o) + PAGE_OFFSET)
#endif
#define roundup(x, y) ((((x)+((y)-1))/(y))*(y))
/* An ELF note in memory */
struct memelfnote
{
@ -384,7 +382,7 @@ read_kcore(struct file *file, char __user *buffer, size_t buflen, loff_t *fpos)
*/
if (n) {
if (clear_user(buffer + tsz - n,
tsz - n))
n))
return -EFAULT;
}
} else {

2
fs/proc/proc_misc.c
View file

@ -169,7 +169,7 @@ static int meminfo_read_proc(char *page, char **start, off_t off,
"Mapped: %8lu kB\n"
"Slab: %8lu kB\n"
"PageTables: %8lu kB\n"
"NFS Unstable: %8lu kB\n"
"NFS_Unstable: %8lu kB\n"
"Bounce: %8lu kB\n"
"CommitLimit: %8lu kB\n"
"Committed_AS: %8lu kB\n"

4
fs/ramfs/file-nommu.c
View file

@ -283,9 +283,9 @@ unsigned long ramfs_nommu_get_unmapped_area(struct file *file,
/*****************************************************************************/
/*
* set up a mapping
* set up a mapping for shared memory segments
*/
int ramfs_nommu_mmap(struct file *file, struct vm_area_struct *vma)
{
return 0;
return vma->vm_flags & VM_SHARED ? 0 : -ENOSYS;
}

2
fs/read_write.c
View file

@ -436,7 +436,7 @@ unsigned long iov_shorten(struct iovec *iov, unsigned long nr_segs, size_t to)
return seg;
}
EXPORT_SYMBOL(iov_shorten);
EXPORT_UNUSED_SYMBOL(iov_shorten); /* June 2006 */
/* A write operation does a read from user space and vice versa */
#define vrfy_dir(type) ((type) == READ ? VERIFY_WRITE : VERIFY_READ)

8
fs/reiserfs/file.c
View file

@ -48,8 +48,8 @@ static int reiserfs_file_release(struct inode *inode, struct file *filp)
return 0;
}
reiserfs_write_lock(inode->i_sb);
mutex_lock(&inode->i_mutex);
reiserfs_write_lock(inode->i_sb);
/* freeing preallocation only involves relogging blocks that
* are already in the current transaction. preallocation gets
* freed at the end of each transaction, so it is impossible for
@ -860,8 +860,12 @@ static int reiserfs_submit_file_region_for_write(struct reiserfs_transaction_han
// this sets the proper flags for O_SYNC to trigger a commit
mark_inode_dirty(inode);
reiserfs_write_unlock(inode->i_sb);
} else
} else {
reiserfs_write_lock(inode->i_sb);
reiserfs_update_inode_transaction(inode);
mark_inode_dirty(inode);
reiserfs_write_unlock(inode->i_sb);
}
sd_update = 1;
}

26
fs/reiserfs/inode.c
View file

@ -39,14 +39,10 @@ void reiserfs_delete_inode(struct inode *inode)
/* The = 0 happens when we abort creating a new inode for some reason like lack of space.. */
if (!(inode->i_state & I_NEW) && INODE_PKEY(inode)->k_objectid != 0) { /* also handles bad_inode case */
mutex_lock(&inode->i_mutex);
reiserfs_delete_xattrs(inode);
if (journal_begin(&th, inode->i_sb, jbegin_count)) {
mutex_unlock(&inode->i_mutex);
if (journal_begin(&th, inode->i_sb, jbegin_count))
goto out;
}
reiserfs_update_inode_transaction(inode);
err = reiserfs_delete_object(&th, inode);
@ -57,12 +53,8 @@ void reiserfs_delete_inode(struct inode *inode)
if (!err)
DQUOT_FREE_INODE(inode);
if (journal_end(&th, inode->i_sb, jbegin_count)) {
mutex_unlock(&inode->i_mutex);
if (journal_end(&th, inode->i_sb, jbegin_count))
goto out;
}
mutex_unlock(&inode->i_mutex);
/* check return value from reiserfs_delete_object after
* ending the transaction
@ -2348,6 +2340,7 @@ static int reiserfs_write_full_page(struct page *page,
unsigned long end_index = inode->i_size >> PAGE_CACHE_SHIFT;
int error = 0;
unsigned long block;
sector_t last_block;
struct buffer_head *head, *bh;
int partial = 0;
int nr = 0;
@ -2395,10 +2388,19 @@ static int reiserfs_write_full_page(struct page *page,
}
bh = head;
block = page->index << (PAGE_CACHE_SHIFT - s->s_blocksize_bits);
last_block = (i_size_read(inode) - 1) >> inode->i_blkbits;
/* first map all the buffers, logging any direct items we find */
do {
if ((checked || buffer_dirty(bh)) && (!buffer_mapped(bh) ||
(buffer_mapped(bh)
if (block > last_block) {
/*
* This can happen when the block size is less than
* the page size. The corresponding bytes in the page
* were zero filled above
*/
clear_buffer_dirty(bh);
set_buffer_uptodate(bh);
} else if ((checked || buffer_dirty(bh)) &&
(!buffer_mapped(bh) || (buffer_mapped(bh)
&& bh->b_blocknr ==
0))) {
/* not mapped yet, or it points to a direct item, search

2
fs/reiserfs/ioctl.c
View file

@ -116,12 +116,12 @@ static int reiserfs_unpack(struct inode *inode, struct file *filp)
if (REISERFS_I(inode)->i_flags & i_nopack_mask) {
return 0;
}
reiserfs_write_lock(inode->i_sb);
/* we need to make sure nobody is changing the file size beneath
** us
*/
mutex_lock(&inode->i_mutex);
reiserfs_write_lock(inode->i_sb);
write_from = inode->i_size & (blocksize - 1);
/* if we are on a block boundary, we are already unpacked. */

25
fs/reiserfs/procfs.c
View file

@ -492,9 +492,17 @@ static void add_file(struct super_block *sb, char *name,
int reiserfs_proc_info_init(struct super_block *sb)
{
char b[BDEVNAME_SIZE];
char *s;
/* Some block devices use /'s */
strlcpy(b, reiserfs_bdevname(sb), BDEVNAME_SIZE);
s = strchr(b, '/');
if (s)
*s = '!';
spin_lock_init(&__PINFO(sb).lock);
REISERFS_SB(sb)->procdir =
proc_mkdir(reiserfs_bdevname(sb), proc_info_root);
REISERFS_SB(sb)->procdir = proc_mkdir(b, proc_info_root);
if (REISERFS_SB(sb)->procdir) {
REISERFS_SB(sb)->procdir->owner = THIS_MODULE;
REISERFS_SB(sb)->procdir->data = sb;
@ -508,13 +516,22 @@ int reiserfs_proc_info_init(struct super_block *sb)
return 0;
}
reiserfs_warning(sb, "reiserfs: cannot create /proc/%s/%s",
proc_info_root_name, reiserfs_bdevname(sb));
proc_info_root_name, b);
return 1;
}
int reiserfs_proc_info_done(struct super_block *sb)
{
struct proc_dir_entry *de = REISERFS_SB(sb)->procdir;
char b[BDEVNAME_SIZE];
char *s;
/* Some block devices use /'s */
strlcpy(b, reiserfs_bdevname(sb), BDEVNAME_SIZE);
s = strchr(b, '/');
if (s)
*s = '!';
if (de) {
remove_proc_entry("journal", de);
remove_proc_entry("oidmap", de);
@ -528,7 +545,7 @@ int reiserfs_proc_info_done(struct super_block *sb)
__PINFO(sb).exiting = 1;
spin_unlock(&__PINFO(sb).lock);
if (proc_info_root) {
remove_proc_entry(reiserfs_bdevname(sb), proc_info_root);
remove_proc_entry(b, proc_info_root);
REISERFS_SB(sb)->procdir = NULL;
}
return 0;

2
fs/reiserfs/xattr.c
View file

@ -424,7 +424,7 @@ int xattr_readdir(struct file *file, filldir_t filler, void *buf)
int res = -ENOTDIR;
if (!file->f_op || !file->f_op->readdir)
goto out;
mutex_lock(&inode->i_mutex);
mutex_lock_nested(&inode->i_mutex, I_MUTEX_XATTR);
// down(&inode->i_zombie);
res = -ENOENT;
if (!IS_DEADDIR(inode)) {

240
fs/splice.c
View file

@ -1306,6 +1306,85 @@ asmlinkage long sys_splice(int fd_in, loff_t __user *off_in,
return error;
}
/*
* Make sure there's data to read. Wait for input if we can, otherwise
* return an appropriate error.
*/
static int link_ipipe_prep(struct pipe_inode_info *pipe, unsigned int flags)
{
int ret;
/*
* Check ->nrbufs without the inode lock first. This function
* is speculative anyways, so missing one is ok.
*/
if (pipe->nrbufs)
return 0;
ret = 0;
mutex_lock(&pipe->inode->i_mutex);
while (!pipe->nrbufs) {
if (signal_pending(current)) {
ret = -ERESTARTSYS;
break;
}
if (!pipe->writers)
break;
if (!pipe->waiting_writers) {
if (flags & SPLICE_F_NONBLOCK) {
ret = -EAGAIN;
break;
}
}
pipe_wait(pipe);
}
mutex_unlock(&pipe->inode->i_mutex);
return ret;
}
/*
* Make sure there's writeable room. Wait for room if we can, otherwise
* return an appropriate error.
*/
static int link_opipe_prep(struct pipe_inode_info *pipe, unsigned int flags)
{
int ret;
/*
* Check ->nrbufs without the inode lock first. This function
* is speculative anyways, so missing one is ok.
*/
if (pipe->nrbufs < PIPE_BUFFERS)
return 0;
ret = 0;
mutex_lock(&pipe->inode->i_mutex);
while (pipe->nrbufs >= PIPE_BUFFERS) {
if (!pipe->readers) {
send_sig(SIGPIPE, current, 0);
ret = -EPIPE;
break;
}
if (flags & SPLICE_F_NONBLOCK) {
ret = -EAGAIN;
break;
}
if (signal_pending(current)) {
ret = -ERESTARTSYS;
break;
}
pipe->waiting_writers++;
pipe_wait(pipe);
pipe->waiting_writers--;
}
mutex_unlock(&pipe->inode->i_mutex);
return ret;
}
/*
* Link contents of ipipe to opipe.
*/
@ -1314,9 +1393,7 @@ static int link_pipe(struct pipe_inode_info *ipipe,
size_t len, unsigned int flags)
{
struct pipe_buffer *ibuf, *obuf;
int ret, do_wakeup, i, ipipe_first;
ret = do_wakeup = ipipe_first = 0;
int ret = 0, i = 0, nbuf;
/*
* Potential ABBA deadlock, work around it by ordering lock
@ -1324,126 +1401,62 @@ static int link_pipe(struct pipe_inode_info *ipipe,
* could deadlock (one doing tee from A -> B, the other from B -> A).
*/
if (ipipe->inode < opipe->inode) {
ipipe_first = 1;
mutex_lock(&ipipe->inode->i_mutex);
mutex_lock(&opipe->inode->i_mutex);
mutex_lock_nested(&ipipe->inode->i_mutex, I_MUTEX_PARENT);
mutex_lock_nested(&opipe->inode->i_mutex, I_MUTEX_CHILD);
} else {
mutex_lock(&opipe->inode->i_mutex);
mutex_lock(&ipipe->inode->i_mutex);
mutex_lock_nested(&opipe->inode->i_mutex, I_MUTEX_PARENT);
mutex_lock_nested(&ipipe->inode->i_mutex, I_MUTEX_CHILD);
}
for (i = 0;; i++) {
do {
if (!opipe->readers) {
send_sig(SIGPIPE, current, 0);
if (!ret)
ret = -EPIPE;
break;
}
if (ipipe->nrbufs - i) {
ibuf = ipipe->bufs + ((ipipe->curbuf + i) & (PIPE_BUFFERS - 1));
/*
* If we have room, fill this buffer
*/
if (opipe->nrbufs < PIPE_BUFFERS) {
int nbuf = (opipe->curbuf + opipe->nrbufs) & (PIPE_BUFFERS - 1);
/*
* Get a reference to this pipe buffer,
* so we can copy the contents over.
*/
ibuf->ops->get(ipipe, ibuf);
obuf = opipe->bufs + nbuf;
*obuf = *ibuf;
/*
* Don't inherit the gift flag, we need to
* prevent multiple steals of this page.
*/
obuf->flags &= ~PIPE_BUF_FLAG_GIFT;
if (obuf->len > len)
obuf->len = len;
opipe->nrbufs++;
do_wakeup = 1;
ret += obuf->len;
len -= obuf->len;
if (!len)
break;
if (opipe->nrbufs < PIPE_BUFFERS)
continue;
}
/*
* We have input available, but no output room.
* If we already copied data, return that. If we
* need to drop the opipe lock, it must be ordered
* last to avoid deadlocks.
*/
if ((flags & SPLICE_F_NONBLOCK) || !ipipe_first) {
if (!ret)
ret = -EAGAIN;
break;
}
if (signal_pending(current)) {
if (!ret)
ret = -ERESTARTSYS;
break;
}
if (do_wakeup) {
smp_mb();
if (waitqueue_active(&opipe->wait))
wake_up_interruptible(&opipe->wait);
kill_fasync(&opipe->fasync_readers, SIGIO, POLL_IN);
do_wakeup = 0;
}
opipe->waiting_writers++;
pipe_wait(opipe);
opipe->waiting_writers--;
continue;
}
/*
* No input buffers, do the usual checks for available
* writers and blocking and wait if necessary
* If we have iterated all input buffers or ran out of
* output room, break.
*/
if (!ipipe->writers)
if (i >= ipipe->nrbufs || opipe->nrbufs >= PIPE_BUFFERS)
break;
if (!ipipe->waiting_writers) {
if (ret)
break;
}
ibuf = ipipe->bufs + ((ipipe->curbuf + i) & (PIPE_BUFFERS - 1));
nbuf = (opipe->curbuf + opipe->nrbufs) & (PIPE_BUFFERS - 1);
/*
* pipe_wait() drops the ipipe mutex. To avoid deadlocks
* with another process, we can only safely do that if
* the ipipe lock is ordered last.
* Get a reference to this pipe buffer,
* so we can copy the contents over.
*/
if ((flags & SPLICE_F_NONBLOCK) || ipipe_first) {
if (!ret)
ret = -EAGAIN;
break;
}
if (signal_pending(current)) {
if (!ret)
ret = -ERESTARTSYS;
break;
}
ibuf->ops->get(ipipe, ibuf);
if (waitqueue_active(&ipipe->wait))
wake_up_interruptible_sync(&ipipe->wait);
kill_fasync(&ipipe->fasync_writers, SIGIO, POLL_OUT);
obuf = opipe->bufs + nbuf;
*obuf = *ibuf;
pipe_wait(ipipe);
}
/*
* Don't inherit the gift flag, we need to
* prevent multiple steals of this page.
*/
obuf->flags &= ~PIPE_BUF_FLAG_GIFT;
if (obuf->len > len)
obuf->len = len;
opipe->nrbufs++;
ret += obuf->len;
len -= obuf->len;
i++;
} while (len);
mutex_unlock(&ipipe->inode->i_mutex);
mutex_unlock(&opipe->inode->i_mutex);
if (do_wakeup) {
/*
* If we put data in the output pipe, wakeup any potential readers.
*/
if (ret > 0) {
smp_mb();
if (waitqueue_active(&opipe->wait))
wake_up_interruptible(&opipe->wait);
@ -1464,14 +1477,29 @@ static long do_tee(struct file *in, struct file *out, size_t len,
{
struct pipe_inode_info *ipipe = in->f_dentry->d_inode->i_pipe;
struct pipe_inode_info *opipe = out->f_dentry->d_inode->i_pipe;
int ret = -EINVAL;
/*
* Link ipipe to the two output pipes, consuming as we go along.
* Duplicate the contents of ipipe to opipe without actually
* copying the data.
*/
if (ipipe && opipe)
return link_pipe(ipipe, opipe, len, flags);
if (ipipe && opipe && ipipe != opipe) {
/*
* Keep going, unless we encounter an error. The ipipe/opipe
* ordering doesn't really matter.
*/
ret = link_ipipe_prep(ipipe, flags);
if (!ret) {
ret = link_opipe_prep(opipe, flags);
if (!ret) {
ret = link_pipe(ipipe, opipe, len, flags);
if (!ret && (flags & SPLICE_F_NONBLOCK))
ret = -EAGAIN;
}
}
}
return -EINVAL;
return ret;
}
asmlinkage long sys_tee(int fdin, int fdout, size_t len, unsigned int flags)

12
fs/sysfs/inode.c
View file

@ -109,6 +109,17 @@ static inline void set_inode_attr(struct inode * inode, struct iattr * iattr)
inode->i_ctime = iattr->ia_ctime;
}
/*
* sysfs has a different i_mutex lock order behavior for i_mutex than other
* filesystems; sysfs i_mutex is called in many places with subsystem locks
* held. At the same time, many of the VFS locking rules do not apply to
* sysfs at all (cross directory rename for example). To untangle this mess
* (which gives false positives in lockdep), we're giving sysfs inodes their
* own class for i_mutex.
*/
static struct lock_class_key sysfs_inode_imutex_key;
struct inode * sysfs_new_inode(mode_t mode, struct sysfs_dirent * sd)
{
struct inode * inode = new_inode(sysfs_sb);
@ -118,6 +129,7 @@ struct inode * sysfs_new_inode(mode_t mode, struct sysfs_dirent * sd)
inode->i_mapping->a_ops = &sysfs_aops;
inode->i_mapping->backing_dev_info = &sysfs_backing_dev_info;
inode->i_op = &sysfs_inode_operations;
lockdep_set_class(&inode->i_mutex, &sysfs_inode_imutex_key);
if (sd->s_iattr) {
/* sysfs_dirent has non-default attributes

11
fs/udf/ialloc.c
View file

@ -75,6 +75,12 @@ struct inode * udf_new_inode (struct inode *dir, int mode, int * err)
}
*err = -ENOSPC;
UDF_I_UNIQUE(inode) = 0;
UDF_I_LENEXTENTS(inode) = 0;
UDF_I_NEXT_ALLOC_BLOCK(inode) = 0;
UDF_I_NEXT_ALLOC_GOAL(inode) = 0;
UDF_I_STRAT4096(inode) = 0;
block = udf_new_block(dir->i_sb, NULL, UDF_I_LOCATION(dir).partitionReferenceNum,
start, err);
if (*err)
@ -84,11 +90,6 @@ struct inode * udf_new_inode (struct inode *dir, int mode, int * err)
}
mutex_lock(&sbi->s_alloc_mutex);
UDF_I_UNIQUE(inode) = 0;
UDF_I_LENEXTENTS(inode) = 0;
UDF_I_NEXT_ALLOC_BLOCK(inode) = 0;
UDF_I_NEXT_ALLOC_GOAL(inode) = 0;
UDF_I_STRAT4096(inode) = 0;
if (UDF_SB_LVIDBH(sb))
{
struct logicalVolHeaderDesc *lvhd;

9
fs/udf/super.c
View file

@ -115,6 +115,13 @@ static struct inode *udf_alloc_inode(struct super_block *sb)
ei = (struct udf_inode_info *)kmem_cache_alloc(udf_inode_cachep, SLAB_KERNEL);
if (!ei)
return NULL;
ei->i_unique = 0;
ei->i_lenExtents = 0;
ei->i_next_alloc_block = 0;
ei->i_next_alloc_goal = 0;
ei->i_strat4096 = 0;
return &ei->vfs_inode;
}
@ -1652,7 +1659,7 @@ static int udf_fill_super(struct super_block *sb, void *options, int silent)
iput(inode);
goto error_out;
}
sb->s_maxbytes = MAX_LFS_FILESIZE;
sb->s_maxbytes = 1<<30;
return 0;
error_out:

70
fs/udf/truncate.c
View file

@ -239,38 +239,52 @@ void udf_truncate_extents(struct inode * inode)
{
if (offset)
{
extoffset -= adsize;
etype = udf_next_aext(inode, &bloc, &extoffset, &eloc, &elen, &bh, 1);
if (etype == (EXT_NOT_RECORDED_NOT_ALLOCATED >> 30))
{
extoffset -= adsize;
elen = EXT_NOT_RECORDED_NOT_ALLOCATED | (elen + offset);
udf_write_aext(inode, bloc, &extoffset, eloc, elen, bh, 0);
}
else if (etype == (EXT_NOT_RECORDED_ALLOCATED >> 30))
{
kernel_lb_addr neloc = { 0, 0 };
extoffset -= adsize;
nelen = EXT_NOT_RECORDED_NOT_ALLOCATED |
((elen + offset + inode->i_sb->s_blocksize - 1) &
~(inode->i_sb->s_blocksize - 1));
udf_write_aext(inode, bloc, &extoffset, neloc, nelen, bh, 1);
udf_add_aext(inode, &bloc, &extoffset, eloc, (etype << 30) | elen, &bh, 1);
}
else
{
if (elen & (inode->i_sb->s_blocksize - 1))
{
extoffset -= adsize;
elen = EXT_RECORDED_ALLOCATED |
((elen + inode->i_sb->s_blocksize - 1) &
~(inode->i_sb->s_blocksize - 1));
udf_write_aext(inode, bloc, &extoffset, eloc, elen, bh, 1);
}
/*
* OK, there is not extent covering inode->i_size and
* no extent above inode->i_size => truncate is
* extending the file by 'offset'.
*/
if ((!bh && extoffset == udf_file_entry_alloc_offset(inode)) ||
(bh && extoffset == sizeof(struct allocExtDesc))) {
/* File has no extents at all! */
memset(&eloc, 0x00, sizeof(kernel_lb_addr));
elen = EXT_NOT_RECORDED_NOT_ALLOCATED | offset;
udf_add_aext(inode, &bloc, &extoffset, eloc, elen, &bh, 1);
}
else {
extoffset -= adsize;
etype = udf_next_aext(inode, &bloc, &extoffset, &eloc, &elen, &bh, 1);
if (etype == (EXT_NOT_RECORDED_NOT_ALLOCATED >> 30))
{
extoffset -= adsize;
elen = EXT_NOT_RECORDED_NOT_ALLOCATED | (elen + offset);
udf_write_aext(inode, bloc, &extoffset, eloc, elen, bh, 0);
}
else if (etype == (EXT_NOT_RECORDED_ALLOCATED >> 30))
{
kernel_lb_addr neloc = { 0, 0 };
extoffset -= adsize;
nelen = EXT_NOT_RECORDED_NOT_ALLOCATED |
((elen + offset + inode->i_sb->s_blocksize - 1) &
~(inode->i_sb->s_blocksize - 1));
udf_write_aext(inode, bloc, &extoffset, neloc, nelen, bh, 1);
udf_add_aext(inode, &bloc, &extoffset, eloc, (etype << 30) | elen, &bh, 1);
}
else
{
if (elen & (inode->i_sb->s_blocksize - 1))
{
extoffset -= adsize;
elen = EXT_RECORDED_ALLOCATED |
((elen + inode->i_sb->s_blocksize - 1) &
~(inode->i_sb->s_blocksize - 1));
udf_write_aext(inode, bloc, &extoffset, eloc, elen, bh, 1);
}
memset(&eloc, 0x00, sizeof(kernel_lb_addr));
elen = EXT_NOT_RECORDED_NOT_ALLOCATED | offset;
udf_add_aext(inode, &bloc, &extoffset, eloc, elen, &bh, 1);
}
}
}
}
UDF_I_LENEXTENTS(inode) = inode->i_size;

2
fs/ufs/balloc.c
View file

@ -248,7 +248,7 @@ static void ufs_change_blocknr(struct inode *inode, unsigned int baseblk,
if (likely(cur_index != index)) {
page = ufs_get_locked_page(mapping, index);
if (IS_ERR(page))
if (!page || IS_ERR(page)) /* it was truncated or EIO */
continue;
} else
page = locked_page;

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