fanotify: Handle overflow in case of permission events
authorJan Kara <jack@suse.cz>
Fri, 21 Feb 2014 18:07:54 +0000 (19:07 +0100)
committerJan Kara <jack@suse.cz>
Tue, 25 Feb 2014 10:17:58 +0000 (11:17 +0100)
commit482ef06c5e946aae360f247dc69471ec031e09d2
treeea36241c3ff91d0ec915e6825caa2f806db938ba
parent2513190a926f093dbdc301c68e6ade0bcf293f9a
fanotify: Handle overflow in case of permission events

If the event queue overflows when we are handling permission event, we
will never get response from userspace. So we must avoid waiting for it.
Change fsnotify_add_notify_event() to return whether overflow has
happened so that we can detect it in fanotify_handle_event() and act
accordingly.

Signed-off-by: Jan Kara <jack@suse.cz>
fs/notify/fanotify/fanotify.c
fs/notify/notification.c