From: Oleg Nesterov <oleg@tv-sign.ru>
Date: Mon, 5 Nov 2007 07:58:05 +0000 (+0100)
Subject: cfq: fix IOPRIO_CLASS_IDLE accounting
X-Git-Tag: v2.6.24-rc3~174^2~7
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=2389d1ef172fc9df01f58265a436919d233fbc27;p=pandora-kernel.git

cfq: fix IOPRIO_CLASS_IDLE accounting

Spotted by Nick <gentuu@gmail.com>, hopefully can explain the second trace in
http://bugzilla.kernel.org/show_bug.cgi?id=9180.

If ->async_idle_cfqq != NULL cfq_put_async_queues() puts it IOPRIO_BE_NR times
in a loop. Fix this.

Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
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