When one of superblocks is missing, f2fs recovers it with the valid one.
But, even if f2fs is mounted as RO, we'd better notify that too.
Signed-off-by: Jaegeuk Kim <jaegeuk@xxxxxxxxxx>
---
fs/f2fs/super.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c
index 5afb4a6..742fc48 100644
--- a/fs/f2fs/super.c
+++ b/fs/f2fs/super.c
@@ -1298,6 +1298,9 @@ int f2fs_commit_super(struct f2fs_sb_info *sbi, bool recover)
struct buffer_head *bh;
int err;
+ if (f2fs_readonly(sbi->sb) || bdev_read_only(sbi->sb->s_bdev))
+ return -EROFS;
+
/* write back-up superblock first */
bh = sb_getblk(sbi->sb, sbi->valid_super_block ? 0: 1);
if (!bh)
@@ -1565,7 +1568,7 @@ try_onemore:
kfree(options);
/* recover broken superblock */
- if (recovery && !f2fs_readonly(sb) && !bdev_read_only(sb->s_bdev)) {
+ if (recovery) {
err = f2fs_commit_super(sbi, true);
f2fs_msg(sb, KERN_INFO,
"Try to recover %dth superblock, ret: %ld",
--
2.6.3
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