From: Thomas Hellstrom <thellstrom@vmware.com>
Date: Tue, 20 Nov 2012 12:16:48 +0000 (+0000)
Subject: kref: Add kref_get_unless_zero documentation
X-Git-Tag: v3.8-rc1~82^2~136
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=a82b8db02f33b38a24fc3858968153940f7c4740;p=pandora-kernel.git

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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