From: Matias Bjorling <m@bjorling.me>
Date: Wed, 18 Dec 2013 12:41:43 +0000 (+0100)
Subject: null_blk: refactor init and init errors code paths
X-Git-Tag: v3.13-rc6~5^2~4
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=2d263a7856cbaf26dd89b671e2161c4a49f8461b;p=pandora-kernel.git

null_blk: refactor init and init errors code paths

Simplify the initialization logic of the three block-layers.

- The queue initialization is split into two parts. This allows reuse of
  code when initializing the sq-, bio- and mq-based layers.
- Set submit_queues default value to 0 and always set it at init time.
- Simplify the init error code paths.

Signed-off-by: Matias Bjorling <m@bjorling.me>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
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