From e12c1fd9d680f6b1181ae13efefc416743bd80e5 Mon Sep 17 00:00:00 2001
From: Alasdair G Kergon <agk@redhat.com>
Date: Fri, 10 May 2013 14:37:17 +0100
Subject: [PATCH] dm cache policy: fix description of lookup fn

Correct the documented requirement on the return code from dm cache policy
lookup functions stated in the policy module header file.

Signed-off-by: Alasdair G Kergon <agk@redhat.com>
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