From: Jens Axboe <axboe@fb.com>
Date: Fri, 30 May 2014 14:25:36 +0000 (-0600)
Subject: blk-mq: make the sysfs mq/ layout reflect current mappings
X-Git-Tag: omap-for-v3.16/fixes-against-rc1~39^2~49^2~4
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=67aec14ce87fe25bdfff7dbf468556333df11c4e;p=pandora-kernel.git

blk-mq: make the sysfs mq/ layout reflect current mappings

Currently blk-mq registers all the hardware queues in sysfs,
regardless of whether it uses them (e.g. they have CPU mappings)
or not. The unused hardware queues lack the cpux/ directories,
and the other sysfs entries (like active, pending, etc) are all
zeroes.

Change this so that sysfs correctly reflects the current mappings
of the hardware queues.

Signed-off-by: Jens Axboe <axboe@fb.com>
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