From: Yan Zheng <zheng.yan@oracle.com>
Date: Wed, 21 Jan 2009 15:49:16 +0000 (-0500)
Subject: Btrfs: Fix infinite loop in btrfs_extent_post_op
X-Git-Tag: v2.6.29-rc4~9^2~20^2~8
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=5a7be515b1f4569aac601170fc681741434cca92;p=pandora-kernel.git

Btrfs: Fix infinite loop in btrfs_extent_post_op

btrfs_extent_post_op calls finish_current_insert and del_pending_extents. They
both may enter infinite loops.

finish_current_insert enters infinite loop if it only finds some backrefs to
update.  The fix is to check for pending backref updates before restarting the
loop.

The infinite loop in del_pending_extents is due to a the skipped variable
not being properly reset before looping around.

Signed-off-by: Yan Zheng <zheng.yan@oracle.com>
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