fsnotify: make fasync generic for both inotify and fanotify

inotify is supposed to support async signal notification when information
is available on the inotify fd.  This patch moves that support to generic
fsnotify functions so it can be used by all notification mechanisms.

Signed-off-by: Eric Paris <eparis@redhat.com>

1 files changed, 4 insertions, 0 deletions

diff --git a/fs/notify/fanotify/fanotify_user.c b/fs/notify/fanotify/fanotify_user.c
index 1218d10424d0..f0e7a57bc899 100644
--- a/fs/notify/fanotify/fanotify_user.c
+++ b/fs/notify/fanotify/fanotify_user.c
@@ -414,6 +414,10 @@ static int fanotify_release(struct inode *ignored, struct file *file)
 
         wake_up(&group->fanotify_data.access_waitq);
 #endif
+
+        if (file->f_flags & FASYNC)
+                fsnotify_fasync(-1, file, 0);
+
         /* matches the fanotify_init->fsnotify_alloc_group */
         fsnotify_destroy_group(group);