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Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

Browse source 
Pull vfs updates from Al Viro:
 "The big thing in this pile is Eric's unmount-on-rmdir series; we
  finally have everything we need for that.  The final piece of prereqs
  is delayed mntput() - now filesystem shutdown always happens on
  shallow stack.

  Other than that, we have several new primitives for iov_iter (Matt
  Wilcox, culled from his XIP-related series) pushing the conversion to
  ->read_iter()/ ->write_iter() a bit more, a bunch of fs/dcache.c
  cleanups and fixes (including the external name refcounting, which
  gives consistent behaviour of d_move() wrt procfs symlinks for long
  and short names alike) and assorted cleanups and fixes all over the
  place.

  This is just the first pile; there's a lot of stuff from various
  people that ought to go in this window.  Starting with
  unionmount/overlayfs mess...  ;-/"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: (60 commits)
  fs/file_table.c: Update alloc_file() comment
  vfs: Deduplicate code shared by xattr system calls operating on paths
  reiserfs: remove pointless forward declaration of struct nameidata
  don't need that forward declaration of struct nameidata in dcache.h anymore
  take dname_external() into fs/dcache.c
  let path_init() failures treated the same way as subsequent link_path_walk()
  fix misuses of f_count() in ppp and netlink
  ncpfs: use list_for_each_entry() for d_subdirs walk
  vfs: move getname() from callers to do_mount()
  gfs2_atomic_open(): skip lookups on hashed dentry
  [infiniband] remove pointless assignments
  gadgetfs: saner API for gadgetfs_create_file()
  f_fs: saner API for ffs_sb_create_file()
  jfs: don't hash direct inode
  [s390] remove pointless assignment of ->f_op in vmlogrdr ->open()
  ecryptfs: ->f_op is never NULL
  android: ->f_op is never NULL
  nouveau: __iomem misannotations
  missing annotation in fs/file.c
  fs: namespace: suppress 'may be used uninitialized' warnings
  ...
This commit is contained in:
Linus Torvalds 2014-10-13 11:28:42 +02:00
commit 77c688ac87
74 changed files with 889 additions and 960 deletions
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20
kernel/printk/printk.c
View file

@ -519,14 +519,13 @@ struct devkmsg_user {
char buf[8192];
};
static ssize_t devkmsg_writev(struct kiocb *iocb, const struct iovec *iv,
unsigned long count, loff_t pos)
static ssize_t devkmsg_write(struct kiocb *iocb, struct iov_iter *from)
{
char *buf, *line;
int i;
int level = default_message_loglevel;
int facility = 1; /* LOG_USER */
size_t len = iov_length(iv, count);
size_t len = iocb->ki_nbytes;
ssize_t ret = len;
if (len > LOG_LINE_MAX)
@ -535,13 +534,10 @@ static ssize_t devkmsg_writev(struct kiocb *iocb, const struct iovec *iv,
if (buf == NULL)
return -ENOMEM;
line = buf;
for (i = 0; i < count; i++) {
if (copy_from_user(line, iv[i].iov_base, iv[i].iov_len)) {
ret = -EFAULT;
goto out;
}
line += iv[i].iov_len;
buf[len] = '\0';
if (copy_from_iter(buf, len, from) != len) {
kfree(buf);
return -EFAULT;
}
/*
@ -567,10 +563,8 @@ static ssize_t devkmsg_writev(struct kiocb *iocb, const struct iovec *iv,
line = endp;
}
}
line[len] = '\0';
printk_emit(facility, level, NULL, 0, "%s", line);
out:
kfree(buf);
return ret;
}
@ -802,7 +796,7 @@ static int devkmsg_release(struct inode *inode, struct file *file)
const struct file_operations kmsg_fops = {
.open = devkmsg_open,
.read = devkmsg_read,
.aio_write = devkmsg_writev,
.write_iter = devkmsg_write,
.llseek = devkmsg_llseek,
.poll = devkmsg_poll,
.release = devkmsg_release,