releases/3.18.85/btrfs-return-the-actual-error-value-from-from-btrfs_uuid_tree_iterate.patch

From foo@baz Tue Nov 28 10:58:31 CET 2017
From: Pan Bian <bianpan2016@163.com>
Date: Sun, 4 Dec 2016 12:51:53 +0800
Subject: btrfs: return the actual error value from  from btrfs_uuid_tree_iterate

From: Pan Bian <bianpan2016@163.com>


[ Upstream commit 73ba39ab9307340dc98ec3622891314bbc09cc2e ]

In function btrfs_uuid_tree_iterate(), errno is assigned to variable ret
on errors. However, it directly returns 0. It may be better to return
ret. This patch also removes the warning, because the caller already
prints a warning.

Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=188731
Signed-off-by: Pan Bian <bianpan2016@163.com>
Reviewed-by: Omar Sandoval <osandov@fb.com>
[ edited subject ]
Signed-off-by: David Sterba <dsterba@suse.com>

Signed-off-by: Sasha Levin <alexander.levin@verizon.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 fs/btrfs/uuid-tree.c |    4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

--- a/fs/btrfs/uuid-tree.c
+++ b/fs/btrfs/uuid-tree.c
@@ -348,7 +348,5 @@ skip:
 
 out:
 	btrfs_free_path(path);
-	if (ret)
-		btrfs_warn(fs_info, "btrfs_uuid_tree_iterate failed %d", ret);
-	return 0;
+	return ret;
 }