f2fs: fix return values from validate superblock

validate super block is not returning with proper values.
When failure from sb_bread it should reflect there is an EIO otherwise
it should return of EINVAL.
Returning, '1' is not conveying proper message as the return type.

Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com>
Signed-off-by: Amit Sahrawat <a.sahrawat@samsung.com>
Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>

diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c
index 022b32a..1db5ebe 100644 (file)
--- a/fs/f2fs/super.c
+++ b/fs/f2fs/super.c
@@ -474,7 +474,7 @@ static int validate_superblock(struct super_block *sb,
        if (!*raw_super_buf) {
                f2fs_msg(sb, KERN_ERR, "unable to read %s superblock",
                                super);
-               return 1;
+               return -EIO;
        }
 
        *raw_super = (struct f2fs_super_block *)
@@ -486,7 +486,7 @@ static int validate_superblock(struct super_block *sb,
 
        f2fs_msg(sb, KERN_ERR, "Can't find a valid F2FS filesystem "
                                "in %s superblock", super);
-       return 1;
+       return -EINVAL;
 }
 
 static int f2fs_fill_super(struct super_block *sb, void *data, int silent)
@@ -509,9 +509,12 @@ static int f2fs_fill_super(struct super_block *sb, void *data, int silent)
                goto free_sbi;
        }
 
-       if (validate_superblock(sb, &raw_super, &raw_super_buf, 0)) {
+       err = validate_superblock(sb, &raw_super, &raw_super_buf, 0);
+       if (err) {
                brelse(raw_super_buf);
-               if (validate_superblock(sb, &raw_super, &raw_super_buf, 1))
+               /* check secondary superblock when primary failed */
+               err = validate_superblock(sb, &raw_super, &raw_super_buf, 1);
+               if (err)
                        goto free_sb_buf;
        }
        /* init some FS parameters */