From: Ming Lei <ming.lei@canoical.com>
Date: Wed, 17 Sep 2014 09:47:58 +0000 (+0800)
Subject: blk-mq: remove unnecessary blk_clear_rq_complete()
X-Git-Tag: fixes-against-v3.18-rc2~51^2~41
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=2edd2c740b2918eb0a9a1fe1b69678b903769ec2;p=pandora-kernel.git

blk-mq: remove unnecessary blk_clear_rq_complete()

This patch removes two unnecessary blk_clear_rq_complete(),
the REQ_ATOM_COMPLETE flag is cleared inside blk_mq_start_request(),
so:

	- The blk_clear_rq_complete() in blk_flush_restore_request()
	needn't because the request will be freed later, and clearing
	it here may open a small race window with timeout.

	- The blk_clear_rq_complete() in blk_mq_requeue_request() isn't
	necessary too, even though REQ_ATOM_STARTED is cleared in
	__blk_mq_requeue_request(), in theory it still may cause a small
	race window with timeout since the two clear_bit() may be
	reordered.

Signed-off-by: Ming Lei <ming.lei@canoical.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
---

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