From: Tejun Heo <tj@kernel.org>
Date: Wed, 16 Feb 2011 17:10:19 +0000 (+0100)
Subject: workqueue: make sure MAYDAY_INITIAL_TIMEOUT is at least 2 jiffies long
X-Git-Tag: v2.6.37.2~31
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=142d511242fd3dbb10afe036baf2c810b021a2ac;p=pandora-kernel.git

workqueue: make sure MAYDAY_INITIAL_TIMEOUT is at least 2 jiffies long

commit 3233cdbd9fa347a6d6897a94cc6ed0302ae83c4f upstream.

MAYDAY_INITIAL_TIMEOUT is defined as HZ / 100 and depending on
configuration may end up 0 or 1.  Even when it's 1, depending on when
the mayday timer is added in the current jiffy interval, it may expire
way before a jiffy has passed.

Make sure MAYDAY_INITIAL_TIMEOUT is at least two to guarantee that at
least a full jiffy has passed before calling rescuers.

Signed-off-by: Tejun Heo <tj@kernel.org>
Reported-by: Ray Jui <rjui@broadcom.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---

Reading git-diff-tree failed