From: Shaohua Li <shli@fb.com>
Date: Fri, 16 Jan 2015 01:32:25 +0000 (-0800)
Subject: block: support different tag allocation policy
X-Git-Tag: fixes-v4.0-rc1~118^2~20
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=ee1b6f7aff94019c09e73837054979063f722046;p=pandora-kernel.git

block: support different tag allocation policy

The libata tag allocation is using a round-robin policy. Next patch will
make libata use block generic tag allocation, so let's add a policy to
tag allocation.

Currently two policies: FIFO (default) and round-robin.

Cc: Jens Axboe <axboe@fb.com>
Cc: Tejun Heo <tj@kernel.org>
Cc: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Shaohua Li <shli@fb.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
---

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