From: Mike Snitzer <snitzer@redhat.com>
Date: Thu, 30 Oct 2014 14:02:01 +0000 (-0400)
Subject: dm cache policy mq: simplify ability to promote sequential IO to the cache
X-Git-Tag: omap-for-v3.19/fixes-for-merge-window~22^2~26
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=f1afb36a6102b52949c2c6d8eb250eddcce3fc5f;p=pandora-kernel.git

dm cache policy mq: simplify ability to promote sequential IO to the cache

Before, if the user wanted sequential IO to be promoted to the cache
they'd have to set sequential_threshold to some nebulous large value.

Now, the user may easily disable sequential IO detection (and sequential
IO's implicit bypass of the cache) by setting sequential_threshold to 0.

Signed-off-by: Mike Snitzer <snitzer@redhat.com>
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