From: Jens Axboe <axboe@fb.com>
Date: Mon, 9 Jun 2014 15:36:53 +0000 (-0600)
Subject: blk-mq: always initialize request->start_time
X-Git-Tag: omap-for-v3.16/fixes-against-rc1~56^2~4
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=3ee3237239583a6555db4f297d00eebdbb6d76ad;p=pandora-kernel.git

blk-mq: always initialize request->start_time

The blk-mq core only initializes this if io stats are enabled, since
blk-mq only reads the field in that case. But drivers could
potentially use it internally, so ensure that we always set it to
the current time when the request is allocated.

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