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authorLinus Torvalds <torvalds@linux-foundation.org>2011-07-22 19:30:19 -0700
committerAl Viro <viro@zeniv.linux.org.uk>2011-07-25 14:23:39 -0400
commite77819e57f0817c6dc7cadd061acd70c604cbce2 (patch)
treef5d7aba2dfbb747a97d783b7cc6a486922c42559 /fs/gfs2/acl.c
parent3ca30d40a91fb9b9871e61d5dea2c1a895906a15 (diff)
downloadlinux-e77819e57f0817c6dc7cadd061acd70c604cbce2.tar.gz
vfs: move ACL cache lookup into generic code
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>
Diffstat (limited to 'fs/gfs2/acl.c')
-rw-r--r--fs/gfs2/acl.c6
1 files changed, 0 insertions, 6 deletions
diff --git a/fs/gfs2/acl.c b/fs/gfs2/acl.c
index 8ef1079f1665..48171f4c943d 100644
--- a/fs/gfs2/acl.c
+++ b/fs/gfs2/acl.c
@@ -80,12 +80,6 @@ int gfs2_check_acl(struct inode *inode, int mask)
 	struct posix_acl *acl;
 	int error;
 
-	if (mask & MAY_NOT_BLOCK) {
-		if (!negative_cached_acl(inode, ACL_TYPE_ACCESS))
-			return -ECHILD;
-		return -EAGAIN;
-	}
-
 	acl = gfs2_acl_get(GFS2_I(inode), ACL_TYPE_ACCESS);
 	if (IS_ERR(acl))
 		return PTR_ERR(acl);