From b721420e8719131896b009b11edbbd27d9b85e98 Mon Sep 17 00:00:00 2001
From: Shaohua Li <shli@kernel.org>
Date: Tue, 27 Aug 2013 17:50:42 +0800
Subject: [PATCH] raid5: sysfs entry to control worker thread number

Add a sysfs entry to control running workqueue thread number. If
group_thread_cnt is set to 0, we will disable workqueue offload handling of
stripes.

Signed-off-by: Shaohua Li <shli@fusionio.com>
Signed-off-by: NeilBrown <neilb@suse.de>
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