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jffs2/jfs/xfs: switch over to 'check_acl' rather than 'permission()'

Browse source 
This avoids an indirect call in the VFS for each path component lookup.

Well, at least as long as you own the directory in question, and the ACL
check is unnecessary.

Reviewed-by: James Morris <[email protected]>
Acked-by: Serge Hallyn <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Linus Torvalds 2009-08-28 12:29:03 -07:00
commit 18f4c64477
10 changed files with 14 additions and 32 deletions
Download patch file Download diff file Expand all files Collapse all files

7
fs/jffs2/acl.c
View file

@ -258,7 +258,7 @@ static int jffs2_set_acl(struct inode *inode, int type, struct posix_acl *acl)
return rc;
}
static int jffs2_check_acl(struct inode *inode, int mask)
int jffs2_check_acl(struct inode *inode, int mask)
{
struct posix_acl *acl;
int rc;
@ -274,11 +274,6 @@ static int jffs2_check_acl(struct inode *inode, int mask)
return -EAGAIN;
}
int jffs2_permission(struct inode *inode, int mask)
{
return generic_permission(inode, mask, jffs2_check_acl);
}
int jffs2_init_acl_pre(struct inode *dir_i, struct inode *inode, int *i_mode)
{
struct posix_acl *acl, *clone;

4
fs/jffs2/acl.h
View file

@ -26,7 +26,7 @@ struct jffs2_acl_header {
#ifdef CONFIG_JFFS2_FS_POSIX_ACL
extern int jffs2_permission(struct inode *, int);
extern int jffs2_check_acl(struct inode *, int);
extern int jffs2_acl_chmod(struct inode *);
extern int jffs2_init_acl_pre(struct inode *, struct inode *, int *);
extern int jffs2_init_acl_post(struct inode *);
@ -36,7 +36,7 @@ extern struct xattr_handler jffs2_acl_default_xattr_handler;
#else
#define jffs2_permission (NULL)
#define jffs2_check_acl (NULL)
#define jffs2_acl_chmod(inode) (0)
#define jffs2_init_acl_pre(dir_i,inode,mode) (0)
#define jffs2_init_acl_post(inode) (0)

2
fs/jffs2/dir.c
View file

@ -55,7 +55,7 @@ const struct inode_operations jffs2_dir_inode_operations =
.rmdir = jffs2_rmdir,
.mknod = jffs2_mknod,
.rename = jffs2_rename,
.permission = jffs2_permission,
.check_acl = jffs2_check_acl,
.setattr = jffs2_setattr,
.setxattr = jffs2_setxattr,
.getxattr = jffs2_getxattr,

2
fs/jffs2/file.c
View file

@ -56,7 +56,7 @@ const struct file_operations jffs2_file_operations =
const struct inode_operations jffs2_file_inode_operations =
{
.permission = jffs2_permission,
.check_acl = jffs2_check_acl,
.setattr = jffs2_setattr,
.setxattr = jffs2_setxattr,
.getxattr = jffs2_getxattr,

2
fs/jffs2/symlink.c
View file

@ -21,7 +21,7 @@ const struct inode_operations jffs2_symlink_inode_operations =
{
.readlink = generic_readlink,
.follow_link = jffs2_follow_link,
.permission = jffs2_permission,
.check_acl = jffs2_check_acl,
.setattr = jffs2_setattr,
.setxattr = jffs2_setxattr,
.getxattr = jffs2_getxattr,