From: Christoph Hellwig <hch@lst.de>
Date: Tue, 27 May 2014 18:59:48 +0000 (+0200)
Subject: blk-mq: remove blk_mq_wait_for_tags
X-Git-Tag: omap-for-v3.16/fixes-against-rc1~39^2~49^2~14
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=a3bd77567cae6af700dcd245148befc73fc89a50;p=pandora-kernel.git

blk-mq: remove blk_mq_wait_for_tags

The current logic for blocking tag allocation is rather confusing, as we
first allocated and then free again a tag in blk_mq_wait_for_tags, just
to attempt a non-blocking allocation and then repeat if someone else
managed to grab the tag before us.

Instead change blk_mq_alloc_request_pinned to simply do a blocking tag
allocation itself and use the request we get back from it.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@fb.com>
---

Reading git-diff-tree failed