fanotify: use both marks when possible

fanotify currently, when given a vfsmount_mark will look up (if it exists)
the corresponding inode mark.  This patch drops that lookup and uses the
mark provided.

Signed-off-by: Eric Paris <eparis@redhat.com>
diff --git a/include/linux/fsnotify_backend.h b/include/linux/fsnotify_backend.h
index d38f922..9bbfd72 100644
--- a/include/linux/fsnotify_backend.h
+++ b/include/linux/fsnotify_backend.h
@@ -92,7 +92,7 @@
  */
 struct fsnotify_ops {
 	bool (*should_send_event)(struct fsnotify_group *group, struct inode *inode,
-				  struct vfsmount *mnt, struct fsnotify_mark *inode_mark,
+				  struct fsnotify_mark *inode_mark,
 				  struct fsnotify_mark *vfsmount_mark,
 				  __u32 mask, void *data, int data_type);
 	int (*handle_event)(struct fsnotify_group *group,