From: Christoph Hellwig <hch@infradead.org>
Date: Tue, 23 Aug 2011 12:50:29 +0000 (+0200)
Subject: block: separate priority boosting from REQ_META
X-Git-Tag: v3.1-rc7~3^2~9
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=65299a3b788bd274bed92f9fa3232082c9f3ea70;p=pandora-kernel.git

block: separate priority boosting from REQ_META

Add a new REQ_PRIO to let requests preempt others in the cfq I/O schedule,
and lave REQ_META purely for marking requests as metadata in blktrace.

All existing callers of REQ_META except for XFS are updated to also
set REQ_PRIO for now.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Namhyung Kim <namhyung@gmail.com>
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
---

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