From: Chao Yu <yuchao0@huawei.com>
Date: Sat, 20 Aug 2016 07:12:02 +0000 (+0800)
Subject: f2fs: fix to do f2fs_balance_fs in f2fs_map_blocks correctly
X-Git-Url: http://drtracing.org/?a=commitdiff_plain;h=58383befc3377b4e2305b98f91e445af73ba8d62;p=deliverable%2Flinux.git

f2fs: fix to do f2fs_balance_fs in f2fs_map_blocks correctly

If we preallocate blocks with f2fs_reserve_blocks in f2fs_map_blocks, we
should call f2fs_balance_fs for checking and reclaiming space, fix it.

Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
---

diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c
index ccb401eebc11..7d618a969524 100644
--- a/fs/f2fs/data.c
+++ b/fs/f2fs/data.c
@@ -783,6 +783,7 @@ skip:
 		err = reserve_new_blocks(&dn, prealloc);
 		if (err)
 			goto sync_out;
+		allocated = dn.node_changed;
 
 		map->m_len += dn.ofs_in_node - ofs_in_node;
 		if (prealloc && dn.ofs_in_node != last_ofs_in_node + 1) {