From: Hannes Reinecke <hare@suse.de>
Date: Fri, 28 Feb 2014 14:33:46 +0000 (+0100)
Subject: dm mpath: reduce memory pressure when requeuing
X-Git-Tag: v3.15-rc1~69^2~9
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=e3bde04f1ecef9d0508af9ea78421863744f552b;p=pandora-kernel.git

dm mpath: reduce memory pressure when requeuing

When multipath needs to requeue I/O in the block layer the per-request
context shouldn't be allocated, as it will be freed immediately
afterwards anyway.  Avoiding this memory allocation will reduce memory
pressure during requeuing.

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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