f2fs: pass sbi rather than sb to parse_options()

With the new mount API the sb will not be available during initial option
parsing, which will happen before fill_super reads sb from disk.

Now that the sb is no longer directly referenced in parse_options, switch
it to use sbi.

(Note that all calls to f2fs_sb_has_* originating from parse_options will
need to be deferred to later before we can use the new mount API.)

Signed-off-by: Eric Sandeen <sandeen@redhat.com>
Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

Author: Eric Sandeen

fs/f2fs/super.c

@@ -673,9 +673,8 @@ static int f2fs_set_zstd_level(struct f2fs_sb_info *sbi, const char *str)
 #endif
 #endif
 
-static int parse_options(struct super_block *sb, char *options, bool is_remount)
+static int parse_options(struct f2fs_sb_info *sbi, char *options, bool is_remount)
 {
-	struct f2fs_sb_info *sbi = F2FS_SB(sb);
 	substring_t args[MAX_OPT_ARGS];
 #ifdef CONFIG_F2FS_FS_COMPRESSION
 	unsigned char (*ext)[F2FS_EXTENSION_LEN];
@@ -2376,7 +2375,7 @@ static int f2fs_remount(struct super_block *sb, int *flags, char *data)
 	default_options(sbi, true);
 
 	/* parse mount options */
-	err = parse_options(sb, data, true);
+	err = parse_options(sbi, data, true);
 	if (err)
 		goto restore_opts;
 
@@ -4546,7 +4545,7 @@ static int f2fs_fill_super(struct super_block *sb, void *data, int silent)
 		goto free_sb_buf;
 	}
 
-	err = parse_options(sb, options, false);
+	err = parse_options(sbi, options, false);
 	if (err)
 		goto free_options;