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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/xfs/linux-2.6/xfs_acl.c
parentCIFS: Fix oops while mounting with prefixpath (diff)
downloadlinux-dev-e77819e57f0817c6dc7cadd061acd70c604cbce2.tar.xz
linux-dev-e77819e57f0817c6dc7cadd061acd70c604cbce2.zip
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 '')
-rw-r--r--fs/xfs/linux-2.6/xfs_acl.c8
1 files changed, 2 insertions, 6 deletions
diff --git a/fs/xfs/linux-2.6/xfs_acl.c b/fs/xfs/linux-2.6/xfs_acl.c
index cac48fe22ad5..f6d065ac56b5 100644
--- a/fs/xfs/linux-2.6/xfs_acl.c
+++ b/fs/xfs/linux-2.6/xfs_acl.c
@@ -231,16 +231,12 @@ xfs_check_acl(struct inode *inode, int mask)
/*
* If there is no attribute fork no ACL exists on this inode and
* we can skip the whole exercise.
+ *
+ * FIXME! Fill the cache! Locking?
*/
if (!XFS_IFORK_Q(ip))
return -EAGAIN;
- if (mask & MAY_NOT_BLOCK) {
- if (!negative_cached_acl(inode, ACL_TYPE_ACCESS))
- return -ECHILD;
- return -EAGAIN;
- }
-
acl = xfs_get_acl(inode, ACL_TYPE_ACCESS);
if (IS_ERR(acl))
return PTR_ERR(acl);