From: Oleg Nesterov <oleg@tv-sign.ru>
Date: Tue, 22 Aug 2006 17:22:13 +0000 (+0400)
Subject: elv_unregister: fix possible crash on module unload
X-Git-Tag: v2.6.18-rc5~70
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=2d8f613160ed303f5fe310f21bba334a4b074fa5;p=pandora-kernel.git

elv_unregister: fix possible crash on module unload

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>
---

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