From: Miao Xie <miaox@cn.fujitsu.com>
Date: Thu, 6 Sep 2012 10:00:32 +0000 (-0600)
Subject: Btrfs: fix error path in create_pending_snapshot()
X-Git-Tag: v3.7-rc1~71^2~77
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=6fa9700e734275de2acbcb0e99414bd7ddfc60f1;p=pandora-kernel.git

Btrfs: fix error path in create_pending_snapshot()

This patch fixes the following problem:
- If we failed to deal with the delayed dir items, we should abort transaction,
  just as its comment said. Fix it.
- If root reference or root back reference insertion failed, we should
  abort transaction. Fix it.
- Fix the double free problem of pending->inherit.
- Do not restore the trans->rsv if we doesn't change it.
- make the error path more clearly.

Signed-off-by: Miao Xie <miaox@cn.fujitsu.com>
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