fs: provide rcu-walk aware permission i_ops
Signed-off-by: Nick Piggin <npiggin@kernel.dk>
diff --git a/fs/xfs/linux-2.6/xfs_acl.c b/fs/xfs/linux-2.6/xfs_acl.c
index b277186..4b11eaf 100644
--- a/fs/xfs/linux-2.6/xfs_acl.c
+++ b/fs/xfs/linux-2.6/xfs_acl.c
@@ -219,12 +219,16 @@
}
int
-xfs_check_acl(struct inode *inode, int mask)
+xfs_check_acl(struct inode *inode, int mask, unsigned int flags)
{
- struct xfs_inode *ip = XFS_I(inode);
+ struct xfs_inode *ip;
struct posix_acl *acl;
int error = -EAGAIN;
+ if (flags & IPERM_FLAG_RCU)
+ return -ECHILD;
+
+ ip = XFS_I(inode);
trace_xfs_check_acl(ip);
/*