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

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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 <jmorris@namei.org>
Acked-by: Serge Hallyn <serue@us.ibm.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Linus Torvalds
2009-08-28 12:29:03 -07:00
parent 1d5ccd1c42
commit 18f4c64477
10 changed files with 14 additions and 32 deletions
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7
fs/jfs/acl.c
View File

@@ -114,7 +114,7 @@ out:
return rc;
}
static int jfs_check_acl(struct inode *inode, int mask)
int jfs_check_acl(struct inode *inode, int mask)
{
struct posix_acl *acl = jfs_get_acl(inode, ACL_TYPE_ACCESS);
@@ -129,11 +129,6 @@ static int jfs_check_acl(struct inode *inode, int mask)
return -EAGAIN;
}
int jfs_permission(struct inode *inode, int mask)
{
return generic_permission(inode, mask, jfs_check_acl);
}
int jfs_init_acl(tid_t tid, struct inode *inode, struct inode *dir)
{
struct posix_acl *acl = NULL;

2
fs/jfs/file.c
View File

@@ -96,7 +96,7 @@ const struct inode_operations jfs_file_inode_operations = {
.removexattr = jfs_removexattr,
#ifdef CONFIG_JFS_POSIX_ACL
.setattr = jfs_setattr,
.permission = jfs_permission,
.check_acl = jfs_check_acl,
#endif
};

2
fs/jfs/jfs_acl.h
View File

@@ -20,7 +20,7 @@
#ifdef CONFIG_JFS_POSIX_ACL
int jfs_permission(struct inode *, int);
int jfs_check_acl(struct inode *, int);
int jfs_init_acl(tid_t, struct inode *, struct inode *);
int jfs_setattr(struct dentry *, struct iattr *);

2
fs/jfs/namei.c
View File

@@ -1543,7 +1543,7 @@ const struct inode_operations jfs_dir_inode_operations = {
.removexattr = jfs_removexattr,
#ifdef CONFIG_JFS_POSIX_ACL
.setattr = jfs_setattr,
.permission = jfs_permission,
.check_acl = jfs_check_acl,
#endif
};