From: Shaohua Li <shli@kernel.org>
Date: Thu, 14 Nov 2013 04:16:17 +0000 (+1100)
Subject: raid5: relieve lock contention in get_active_stripe()
X-Git-Tag: v3.13-rc1~31^2~13
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=4bda556aea1d2916260326c6afa77b84a1f1345a;p=pandora-kernel.git

raid5: relieve lock contention in get_active_stripe()

track empty inactive list count, so md_raid5_congested() can use it to make
decision.

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