From: Dmitry Monakhov <dmonakhov@openvz.org>
Date: Mon, 26 Apr 2010 16:03:33 +0000 (+0400)
Subject: quota: Make quota stat accounting lockless.
X-Git-Tag: v2.6.35-rc1~455^2~14
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=dde9588853b1bde542eab247f8838c472806688f;p=pandora-kernel.git

quota: Make quota stat accounting lockless.

Quota stats is mostly writable data structure. Let's alloc percpu
bucket for each value.

NOTE: dqstats_read() function is racy against dqstats_{inc,dec}
and may return inconsistent value. But this is ok since absolute
accuracy is not required.

Signed-off-by: Dmitry Monakhov <dmonakhov@openvz.org>
Signed-off-by: Jan Kara <jack@suse.cz>
---

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