From: Shilong Wang <wangshilong1991@gmail.com>
Date: Sun, 12 Apr 2015 06:35:20 +0000 (+0800)
Subject: Btrfs: fix wrong check for btrfs_force_chunk_alloc()
X-Git-Url: http://git.hungrycats.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=78512fba8fcfd9af9b59188e1cd004d067192e7a;p=linux

Btrfs: fix wrong check for btrfs_force_chunk_alloc()

btrfs_force_chunk_alloc() return 1 for allocation chunk successfully.
This problem exists since commit c87f08ca4.

With this patch, we might fix some enospc problems for balances.

Signed-off-by: Wang Shilong <wangshilong1991@gmail.com>
Reviewed-by: Filipe Manana <fdmanana@suse.com>
Tested-by: Filipe Manana <fdmanana@suse.com>
(cherry picked from commit 9ac2b7cb4755cb3311bb7d1ccf0eb51d0e006fba)
---

diff --git a/fs/btrfs/relocation.c b/fs/btrfs/relocation.c
index 74b24b01d574..790a8ed17c44 100644
--- a/fs/btrfs/relocation.c
+++ b/fs/btrfs/relocation.c
@@ -4040,7 +4040,7 @@ restart:
 	if (trans && progress && err == -ENOSPC) {
 		ret = btrfs_force_chunk_alloc(trans, rc->extent_root,
 					      rc->block_group->flags);
-		if (ret == 0) {
+		if (ret == 1) {
 			err = 0;
 			progress = 0;
 			goto restart;