->permission() sanitizing: pass MAY_NOT_BLOCK to ->check_acl()

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/fs/jfs/acl.c b/fs/jfs/acl.c
index e5de942..859ae5a 100644
--- a/fs/jfs/acl.c
+++ b/fs/jfs/acl.c
@@ -118,7 +118,7 @@
 {
 	struct posix_acl *acl;
 
-	if (flags & IPERM_FLAG_RCU)
+	if (mask & MAY_NOT_BLOCK)
 		return -ECHILD;
 
 	acl = jfs_get_acl(inode, ACL_TYPE_ACCESS);