From: Oleg Nesterov <oleg@tv-sign.ru>
Date: Wed, 7 Nov 2007 12:51:35 +0000 (+0100)
Subject: cfq_idle_class_timer: add paranoid checks for jiffies overflow
X-Git-Tag: v2.6.24-rc3~174^2~5
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=0e7be9edb9134f833278c381b6feabb54b875208;p=pandora-kernel.git

cfq_idle_class_timer: add paranoid checks for jiffies overflow

In theory, if the queue was idle long enough, cfq_idle_class_timer may have
a false (and very long) timeout because jiffies can wrap into the past wrt
->last_end_request.

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

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