From: Jens Axboe <jens.axboe@oracle.com>
Date: Fri, 27 Mar 2009 09:30:47 +0000 (+0100)
Subject: block: elevator quiescing helpers
X-Git-Tag: v2.6.30-rc1~6^2~10
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=6c7e8cee6a9128eeb7f83c3ad1cb243f77f5cb16;p=pandora-kernel.git

block: elevator quiescing helpers

Simple helper functions to quiesce the request queue. These are
currently only used for switching IO schedulers on-the-fly, but
we can use them to properly switch IO accounting on and off as well.

Signed-off-by: Jerome Marchand <jmarchan@redhat.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
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