From: Hannes Reinecke <hare@suse.de>
Date: Fri, 28 Feb 2014 14:33:44 +0000 (+0100)
Subject: dm mpath: push back requests instead of queueing
X-Git-Tag: v3.15-rc1~69^2~11
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=e80991773;p=pandora-kernel.git

dm mpath: push back requests instead of queueing

There is no reason why multipath needs to queue requests internally for
queue_if_no_path or pg_init; we should rather push them back onto the
request queue.

And while we're at it we can simplify the conditional statement in
map_io() to make it easier to read.

Since mpath no longer does internal queuing of I/O the table info no
longer emits the internal queue_size.  Instead it displays 1 if queuing
is being used or 0 if it is not.

Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Reviewed-by: Jun'ichi Nomura <j-nomura@ce.jp.nec.com>
---

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