diff --git a/fs/notify/fanotify/fanotify.c b/fs/notify/fanotify/fanotify.c
index 060b177146e8..95a330d2f8a1 100644
--- a/fs/notify/fanotify/fanotify.c
+++ b/fs/notify/fanotify/fanotify.c
@@ -27,7 +27,9 @@ static bool should_merge(struct fsnotify_event *old, struct fsnotify_event *new)
 	return false;
 }
 
-static int fanotify_merge(struct list_head *list, struct fsnotify_event *event)
+static int fanotify_merge(struct list_head *list,
+			  struct fsnotify_event *event,
+			  void **arg)
 {
 	struct fsnotify_event_holder *test_holder;
 	struct fsnotify_event *test_event;
@@ -92,7 +94,7 @@ static int fanotify_handle_event(struct fsnotify_group *group, struct fsnotify_e
 
 	pr_debug("%s: group=%p event=%p\n", __func__, group, event);
 
-	ret = fsnotify_add_notify_event(group, event, NULL, fanotify_merge);
+	ret = fsnotify_add_notify_event(group, event, NULL, fanotify_merge, NULL);
 	/* -EEXIST means this event was merged with another, not that it was an error */
 	if (ret == -EEXIST)
 		ret = 0;
diff --git a/fs/notify/inotify/inotify_fsnotify.c b/fs/notify/inotify/inotify_fsnotify.c
index 1d237e1bf7b1..daa666a6e6c9 100644
--- a/fs/notify/inotify/inotify_fsnotify.c
+++ b/fs/notify/inotify/inotify_fsnotify.c
@@ -67,7 +67,9 @@ static bool event_compare(struct fsnotify_event *old, struct fsnotify_event *new
 	return false;
 }
 
-static int inotify_merge(struct list_head *list, struct fsnotify_event *event)
+static int inotify_merge(struct list_head *list,
+			 struct fsnotify_event *event,
+			 void **arg)
 {
 	struct fsnotify_event_holder *last_holder;
 	struct fsnotify_event *last_event;
@@ -114,7 +116,7 @@ static int inotify_handle_event(struct fsnotify_group *group, struct fsnotify_ev
 	fsn_event_priv->group = group;
 	event_priv->wd = wd;
 
-	ret = fsnotify_add_notify_event(group, event, fsn_event_priv, inotify_merge);
+	ret = fsnotify_add_notify_event(group, event, fsn_event_priv, inotify_merge, NULL);
 	if (ret) {
 		inotify_free_event_priv(fsn_event_priv);
 		/* EEXIST says we tail matched, EOVERFLOW isn't something
diff --git a/fs/notify/inotify/inotify_user.c b/fs/notify/inotify/inotify_user.c
index 19d274057bfa..1ce71f5b9589 100644
--- a/fs/notify/inotify/inotify_user.c
+++ b/fs/notify/inotify/inotify_user.c
@@ -525,7 +525,7 @@ void inotify_ignored_and_remove_idr(struct fsnotify_mark *fsn_mark,
 	fsn_event_priv->group = group;
 	event_priv->wd = i_mark->wd;
 
-	ret = fsnotify_add_notify_event(group, ignored_event, fsn_event_priv, NULL);
+	ret = fsnotify_add_notify_event(group, ignored_event, fsn_event_priv, NULL, NULL);
 	if (ret)
 		inotify_free_event_priv(fsn_event_priv);
 
diff --git a/fs/notify/notification.c b/fs/notify/notification.c
index 7fc8d004084c..2d50a40ab1e4 100644
--- a/fs/notify/notification.c
+++ b/fs/notify/notification.c
@@ -137,7 +137,10 @@ struct fsnotify_event_private_data *fsnotify_remove_priv_from_event(struct fsnot
  */
 int fsnotify_add_notify_event(struct fsnotify_group *group, struct fsnotify_event *event,
 			      struct fsnotify_event_private_data *priv,
-			      int (*merge)(struct list_head *, struct fsnotify_event *))
+			      int (*merge)(struct list_head *,
+					   struct fsnotify_event *,
+					   void **arg),
+			      void **arg)
 {
 	struct fsnotify_event_holder *holder = NULL;
 	struct list_head *list = &group->notification_list;
@@ -170,7 +173,7 @@ int fsnotify_add_notify_event(struct fsnotify_group *group, struct fsnotify_even
 	if (!list_empty(list) && merge) {
 		int ret;
 
-		ret = merge(list, event);
+		ret = merge(list, event, arg);
 		if (ret) {
 			mutex_unlock(&group->notification_mutex);
 			if (holder != &event->holder)
diff --git a/include/linux/fsnotify_backend.h b/include/linux/fsnotify_backend.h
index 8b2e095e5907..afc690192972 100644
--- a/include/linux/fsnotify_backend.h
+++ b/include/linux/fsnotify_backend.h
@@ -355,7 +355,10 @@ extern struct fsnotify_event_private_data *fsnotify_remove_priv_from_event(struc
 extern int fsnotify_add_notify_event(struct fsnotify_group *group,
 				     struct fsnotify_event *event,
 				     struct fsnotify_event_private_data *priv,
-				     int (*merge)(struct list_head *, struct fsnotify_event *));
+				     int (*merge)(struct list_head *,
+						  struct fsnotify_event *,
+						  void **),
+				     void **arg);
 /* true if the group notification queue is empty */
 extern bool fsnotify_notify_queue_is_empty(struct fsnotify_group *group);
 /* return, but do not dequeue the first event on the notification queue */