From a82b8db02f33b38a24fc3858968153940f7c4740 Mon Sep 17 00:00:00 2001
From: Thomas Hellstrom <thellstrom@vmware.com>
Date: Tue, 20 Nov 2012 12:16:48 +0000
Subject: [PATCH] kref: Add kref_get_unless_zero documentation

Document how kref_get_unless_zero should be used and how it helps
solve a typical kref / locking problem.

Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
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Reading git-format-patch failed