elv_unregister: fix possible crash on module unload
authorOleg Nesterov <oleg@tv-sign.ru>
Tue, 22 Aug 2006 17:22:13 +0000 (21:22 +0400)
committerGreg Kroah-Hartman <gregkh@suse.de>
Tue, 22 Aug 2006 19:52:23 +0000 (12:52 -0700)
An exiting task or process which didn't do I/O yet have no io context,
elv_unregister() should check it is not NULL.

Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru>
Acked-by: Jens Axboe <axboe@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

No differences found