f2fs: give RO message when recovering superblock

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@kernel.org>

diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c
index 006f87d69921da05e071f41dc023a5d812116779..ffe4616376ca9fb4025bd7086751681038ca59f9 100644 (file)
--- 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",