fsnotify: allow groups to add private data to events

inotify needs per group information attached to events.  This patch allows
groups to attach private information and implements a callback so that
information can be freed when an event is being destroyed.

Signed-off-by: Eric Paris <eparis@redhat.com>
Acked-by: Al Viro <viro@zeniv.linux.org.uk>
Cc: Christoph Hellwig <hch@lst.de>

1 files changed, 1 insertions, 0 deletions

diff --git a/fs/notify/dnotify/dnotify.c b/fs/notify/dnotify/dnotify.c
index d9d80f502c6f..12f9e6b1ffe2 100644
--- a/fs/notify/dnotify/dnotify.c
+++ b/fs/notify/dnotify/dnotify.c
@@ -183,6 +183,7 @@ static struct fsnotify_ops dnotify_fsnotify_ops = {
         .should_send_event = dnotify_should_send_event,
         .free_group_priv = NULL,
         .freeing_mark = dnotify_freeing_mark,
+        .free_event_priv = NULL,
 };
 
 /*