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| author |   Linus Torvalds <torvalds@linux-foundation.org> | 2011-07-22 19:30:19 -0700 |
|---|---|---|
| committer |   Al Viro <viro@zeniv.linux.org.uk> | 2011-07-25 14:23:39 -0400 |
| commit | e77819e57f0817c6dc7cadd061acd70c604cbce2 (patch) | |
| tree | f5d7aba2dfbb747a97d783b7cc6a486922c42559 /fs/xfs/linux-2.6/xfs_acl.c | |
| parent | CIFS: Fix oops while mounting with prefixpath (diff) | |
| download | linux-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 'fs/xfs/linux-2.6/xfs_acl.c')
| -rw-r--r-- | fs/xfs/linux-2.6/xfs_acl.c | 8 |
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); |