From: Miao Xie <miaox@cn.fujitsu.com>
Date: Thu, 6 Mar 2014 05:54:59 +0000 (+0800)
Subject: Btrfs: remove unnecessary lock in may_commit_transaction()
X-Git-Tag: v3.15-rc1~96^2~17
X-Git-Url: https://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=0424c548976b4c2a72c0bdbea425cf9d51e82d0f;p=pandora-kernel.git

Btrfs: remove unnecessary lock in may_commit_transaction()

The reason is:
- The per-cpu counter has its own lock to protect itself.
- Here we needn't get a exact value.

Signed-off-by: Miao Xie <miaox@cn.fujitsu.com>
Signed-off-by: Josef Bacik <jbacik@fb.com>
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