From: Jaegeuk Kim <jaegeuk@kernel.org>
Date: Sat, 24 Jan 2015 02:43:45 +0000 (-0800)
Subject: f2fs: avoid write_checkpoint if f2fs is mounted readonly
X-Git-Url: http://drtracing.org/?a=commitdiff_plain;h=11504a8e7e20e2ff2e68176850e9b83b8bae760e;p=deliverable%2Flinux.git

f2fs: avoid write_checkpoint if f2fs is mounted readonly

Do not change any partition when f2fs is changed to readonly mode.

Reviewed-by: Chao Yu <chao2.yu@samsung.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
---

diff --git a/fs/f2fs/checkpoint.c b/fs/f2fs/checkpoint.c
index 19021414d195..22165fb1d0d1 100644
--- a/fs/f2fs/checkpoint.c
+++ b/fs/f2fs/checkpoint.c
@@ -1067,6 +1067,8 @@ void write_checkpoint(struct f2fs_sb_info *sbi, struct cp_control *cpc)
 		goto out;
 	if (unlikely(f2fs_cp_error(sbi)))
 		goto out;
+	if (f2fs_readonly(sbi->sb))
+		goto out;
 	if (block_operations(sbi))
 		goto out;