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vfs: move ACL cache lookup into generic code

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This moves logic for checking the cached ACL values from low-level
filesystems into generic code.  The end result is a streamlined ACL
check that doesn't need to load the inode->i_op->check_acl pointer at
all for the common cached case.

The filesystems also don't need to check for a non-blocking RCU walk
case in their acl_check() functions, because that is all handled at a
VFS layer.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Linus Torvalds
2011-07-22 19:30:19 -07:00
committed by Al Viro
parent 3ca30d40a9
commit e77819e57f
12 changed files with 64 additions and 68 deletions
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fs/ocfs2/acl.c
-3
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@@ -297,9 +297,6 @@ int ocfs2_check_acl(struct inode *inode, int mask)
struct posix_acl *acl;
int ret = -EAGAIN;
if (mask & MAY_NOT_BLOCK)
return -ECHILD;
osb = OCFS2_SB(inode->i_sb);
if (!(osb->s_mount_opt & OCFS2_MOUNT_POSIX_ACL))
return ret;