From 64f26f745084872b916cd1bef6054e21b15c5784 Mon Sep 17 00:00:00 2001
From: David Woodhouse <dwmw2@infradead.org>
Date: Thu, 24 Jul 2008 10:09:43 -0400
Subject: [PATCH] Btrfs: Use assert_spin_locked instead of spin_trylock

On UP systems spin_trylock always succeeds

Signed-off-by: Chris Mason <chris.mason@oracle.com>
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Reading git-format-patch failed