f2fs: wrap all options with f2fs_sb_info.mount_opt

This patch merges miscellaneous mount options into struct f2fs_mount_info,
After this patch, once we add new mount option, we don't need to worry
about recovery of it in remount_fs(), since we will recover the
f2fs_sb_info.mount_opt including all options.

Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c
index 6c3c978..3d6ae31 100644
--- a/fs/f2fs/data.c
+++ b/fs/f2fs/data.c
@@ -2300,7 +2300,7 @@
 	int rw = iov_iter_rw(iter);
 	int err;
 	enum rw_hint hint = iocb->ki_hint;
-	int whint_mode = sbi->whint_mode;
+	int whint_mode = F2FS_OPTION(sbi).whint_mode;
 
 	err = check_direct_IO(inode, iter, offset);
 	if (err)