From: Ming Lei <tom.leiming@gmail.com>
Date: Sat, 10 May 2014 17:01:49 +0000 (+0800)
Subject: blk-mq: bitmap tag: remove barrier in bt_clear_tag()
X-Git-Tag: omap-for-v3.16/fixes-against-rc1~39^2~49^2~41^2~2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=60f2df8a29df5f2db2c87fd23122a1cebdf2011a;p=pandora-kernel.git

blk-mq: bitmap tag: remove barrier in bt_clear_tag()

The barrier isn't necessary because both atomic_dec_and_test()
and wake_up() implicate one barrier.

Signed-off-by: Ming Lei <tom.leiming@gmail.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
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