From: Jan Kara <jack@suse.cz>
Date: Mon, 26 Jan 2009 14:32:46 +0000 (+0100)
Subject: quota: Make global quota locks cacheline aligned
X-Git-Tag: v2.6.30-rc1~648^2~17
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=c516610cfec5c50f84ff8cc315628548481f4990;p=pandora-kernel.git

quota: Make global quota locks cacheline aligned

Andrew Morton has suggested that three global quota locks can end up in the
same cacheline which can result in bad cacheline ping-pong on SMP machines.
Make locks cacheline aligned so that we avoid this problem (thanks goes to
Andrew for the idea).

Signed-off-by: Jan Kara <jack@suse.cz>
CC: Andrew Morton <akpm@linux-foundation.org>
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