From: Matias Bjørling <m@bjorling.me>
Date: Wed, 11 Jun 2014 21:43:54 +0000 (+0200)
Subject: block: remove WQ_POWER_EFFICIENT from kblockd
X-Git-Tag: omap-for-v3.16/fixes-rc4~81^2~7
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=28747fcd2211d0fccbe3d3c91a1067c3744db908;p=pandora-kernel.git

block: remove WQ_POWER_EFFICIENT from kblockd

blk-mq issues async requests through kblockd. To issue a work request on
a specific CPU, kblockd_schedule_delayed_work_on is used. However, the
specific CPU choice may not be honored, if the power_efficient option
for workqueues is set. blk-mq requires that we have strict per-cpu
scheduling, so it wont work properly if kblockd is marked
POWER_EFFICIENT and power_efficient is set.

Remove the kblockd WQ_POWER_EFFICIENT flag to prevent this behavior.
This essentially reverts part of commit 695588f9454b, which added
the WQ_POWER_EFFICIENT marker to kblockd.

Signed-off-by: Matias Bjørling <m@bjorling.me>
Signed-off-by: Jens Axboe <axboe@fb.com>
---

Reading git-diff-tree failed