From 8cc33e5c19bf01c7617608669be8c1b4f663eb2f Mon Sep 17 00:00:00 2001
From: David Sterba <dsterba@suse.cz>
Date: Mon, 2 May 2011 15:29:25 +0200
Subject: [PATCH] btrfs: Document a mutex lock/unlock sequence

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Reading git-format-patch failed