[PATCH] f2fs: fix to restore whint_mode in ->remount_fs

[Chao Yu]

From: Chao Yu <yuch...@huawei.com>

If we fail in ->remount_fs, it needs to restore old whint_mode as other
mount options.

Fixes: e25afe01822f ("f2fs: support passing down write hints given by users to 
block layer")
Signed-off-by: Chao Yu <yuch...@huawei.com>
---
 fs/f2fs/super.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c
index 89abe4087e66..8a93f78efca2 100644
--- a/fs/f2fs/super.c
+++ b/fs/f2fs/super.c
@@ -1512,6 +1512,7 @@ static int f2fs_remount(struct super_block *sb, int 
*flags, char *data)
                sbi->s_qf_names[i] = s_qf_names[i];
        }
 #endif
+       sbi->whint_mode = old_whint_mode;
        sbi->mount_opt = org_mount_opt;
        sbi->active_logs = active_logs;
        sb->s_flags = old_sb_flags;
-- 
2.14.1.145.gb3622a4ee