From: Liu Bo <bo.li.liu@oracle.com>
Date: Mon, 5 Nov 2012 12:42:09 +0000 (+0000)
Subject: Btrfs: fix a double free on pending snapshots in error handling
X-Git-Tag: v3.8-rc1~71^2~87
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=109f2365f1928af241b2ccbd0f6ba0b93d911288;p=pandora-kernel.git

Btrfs: fix a double free on pending snapshots in error handling

When creating a snapshot, failing to commit a transaction can end up
with aborting the transaction, following by doing a cleanup for it, where
we'll free all snapshots pending to disk.

So we check it and avoid double free on pending snapshots.

Signed-off-by: Liu Bo <bo.li.liu@oracle.com>
Signed-off-by: Chris Mason <chris.mason@fusionio.com>
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