fsnotify: allow groups to set freeing_mark to null
Most fsnotify listeners (all but inotify) do not care about marks being
freed. Allow groups to set freeing_mark to null and do not call any
function if it is set that way.
Signed-off-by: Eric Paris <eparis@redhat.com>
diff --git a/fs/notify/inode_mark.c b/fs/notify/inode_mark.c
index 0a499d2..c8a07c6 100644
--- a/fs/notify/inode_mark.c
+++ b/fs/notify/inode_mark.c
@@ -190,7 +190,8 @@
* callback to the group function to let it know that this entry
* is being freed.
*/
- group->ops->freeing_mark(entry, group);
+ if (group->ops->freeing_mark)
+ group->ops->freeing_mark(entry, group);
/*
* __fsnotify_update_child_dentry_flags(inode);