From: Li Zefan <lizf@cn.fujitsu.com>
Date: Thu, 17 Mar 2011 07:17:59 +0000 (+0800)
Subject: Btrfs: Check if btrfs_next_leaf() returns error in btrfs_listxattr()
X-Git-Tag: v2.6.39-rc4~5^2~7
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=2e6a00356a066d34cd00872b067589549169ad48;p=pandora-kernel.git

Btrfs: Check if btrfs_next_leaf() returns error in btrfs_listxattr()

btrfs_next_leaf() can return -errno, and we should propagate
it to userspace.

This also simplifies how we walk the btree path.

Signed-off-by: Li Zefan <lizf@cn.fujitsu.com>
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