From: Wang Shilong <wangsl.fnst@cn.fujitsu.com>
Date: Sun, 12 Jan 2014 13:38:33 +0000 (+0800)
Subject: Btrfs: fix to search previous metadata extent item since skinny metadata
X-Git-Tag: v3.14-rc1~29^2~32
X-Git-Url: https://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=ade2e0b3eeca941a5cd486bac21599ff87f288c8;p=pandora-kernel.git

Btrfs: fix to search previous metadata extent item since skinny metadata

There is a bug that using btrfs_previous_item() to search metadata extent item.
This is because in btrfs_previous_item(), we need type match, however, since
skinny metada was introduced by josef, we may mix this two types. So just
use btrfs_previous_item() is not working right.

To keep btrfs_previous_item() like normal tree search, i introduce another
function btrfs_previous_extent_item().

Signed-off-by: Wang Shilong <wangsl.fnst@cn.fujitsu.com>
Signed-off-by: Josef Bacik <jbacik@fb.com>
Signed-off-by: Chris Mason <clm@fb.com>
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