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xfs: cache negative ACLs if there is no attribute fork 

Always set up a negative ACL cache entry if the inode doesn't have an
attribute fork.  That behaves much better than doing this check inside
->check_acl.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Christoph Hellwig 2011-07-23 17:36:50 +02:00 committed by Al Viro
parent ebbb0ef287
commit 6311b10800
2 changed files with 5 additions and 12 deletions
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13
fs/xfs/linux-2.6/xfs_acl.c
View File

@ -221,21 +221,10 @@ xfs_set_acl(struct inode *inode, int type, struct posix_acl *acl)
int
xfs_check_acl(struct inode *inode, int mask)
{
struct xfs_inode *ip;
struct posix_acl *acl;
int error = -EAGAIN;
ip = XFS_I(inode);
trace_xfs_check_acl(ip);
/*
* 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;
trace_xfs_check_acl(XFS_I(inode));
acl = xfs_get_acl(inode, ACL_TYPE_ACCESS);
if (IS_ERR(acl))

4
fs/xfs/linux-2.6/xfs_iops.c
View File

@ -1194,6 +1194,10 @@ xfs_setup_inode(
break;
}
/* if there is no attribute fork no ACL can exist on this inode */
if (!XFS_IFORK_Q(ip))
cache_no_acl(inode);
xfs_iflags_clear(ip, XFS_INEW);
barrier();