From: Alexander Gordeev <agordeev@redhat.com>
Date: Wed, 18 Jun 2014 05:12:35 +0000 (-0700)
Subject: blk-mq: bitmap tag: fix races on shared ::wake_index fields
X-Git-Tag: omap-for-v3.16/fixes-rc4~81^2~2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=8537b12034cf1fd3fab3da2c859d71f76846fae9;p=pandora-kernel.git

blk-mq: bitmap tag: fix races on shared ::wake_index fields

Fix racy updates of shared blk_mq_bitmap_tags::wake_index
and blk_mq_hw_ctx::wake_index fields.

Cc: Ming Lei <tom.leiming@gmail.com>
Signed-off-by: Alexander Gordeev <agordeev@redhat.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
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