fsnotify: remove pointless NULL initializers

We usually rely on the fact that struct members not specified in the
initializer are set to NULL.  So do that with fsnotify function pointers
as well.

Signed-off-by: Jan Kara <jack@suse.cz>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Cc: Eric Paris <eparis@parisplace.org>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/fs/notify/dnotify/dnotify.c b/fs/notify/dnotify/dnotify.c
index 928688e..0b9ff43 100644
--- a/fs/notify/dnotify/dnotify.c
+++ b/fs/notify/dnotify/dnotify.c
@@ -138,9 +138,6 @@
 
 static struct fsnotify_ops dnotify_fsnotify_ops = {
 	.handle_event = dnotify_handle_event,
-	.free_group_priv = NULL,
-	.freeing_mark = NULL,
-	.free_event = NULL,
 };
 
 /*
diff --git a/fs/notify/fanotify/fanotify.c b/fs/notify/fanotify/fanotify.c
index 1f8f052..5877262 100644
--- a/fs/notify/fanotify/fanotify.c
+++ b/fs/notify/fanotify/fanotify.c
@@ -230,5 +230,4 @@
 	.handle_event = fanotify_handle_event,
 	.free_group_priv = fanotify_free_group_priv,
 	.free_event = fanotify_free_event,
-	.freeing_mark = NULL,
 };
diff --git a/kernel/audit_tree.c b/kernel/audit_tree.c
index ae8103b..67ccf0e 100644
--- a/kernel/audit_tree.c
+++ b/kernel/audit_tree.c
@@ -936,8 +936,6 @@
 
 static const struct fsnotify_ops audit_tree_ops = {
 	.handle_event = audit_tree_handle_event,
-	.free_group_priv = NULL,
-	.free_event = NULL,
 	.freeing_mark = audit_tree_freeing_mark,
 };
 
diff --git a/kernel/audit_watch.c b/kernel/audit_watch.c
index 367ac9a..2596fac 100644
--- a/kernel/audit_watch.c
+++ b/kernel/audit_watch.c
@@ -505,9 +505,6 @@
 
 static const struct fsnotify_ops audit_watch_fsnotify_ops = {
 	.handle_event = 	audit_watch_handle_event,
-	.free_group_priv = 	NULL,
-	.freeing_mark = 	NULL,
-	.free_event = 		NULL,
 };
 
 static int __init audit_watch_init(void)