From: Liu Bo <liubo2009@cn.fujitsu.com>
Date: Thu, 14 Jun 2012 08:23:20 +0000 (-0600)
Subject: Btrfs: avoid memory leak of extent state in error handling routine
X-Git-Tag: v3.5-rc3~18^2~3
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=6e841e32b159e298debbb2cb0e9158e894fcaf05;p=pandora-kernel.git

Btrfs: avoid memory leak of extent state in error handling routine

We've forgotten to clear extent states in pinned tree, which will results in
space counter mismatch and memory leak:

WARNING: at fs/btrfs/extent-tree.c:7537 btrfs_free_block_groups+0x1f3/0x2e0 [btrfs]()
...
space_info 2 has 8380416 free, is not full
space_info total=12582912, used=4096, pinned=4096, reserved=0, may_use=0, readonly=4194304
btrfs state leak: start 29364224 end 29376511 state 1 in tree ffff880075f20090 refs 1
...

Signed-off-by: Liu Bo <liubo2009@cn.fujitsu.com>
Signed-off-by: Chris Mason <chris.mason@fusionio.com>
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