[snip]
> + map_bh(bh_result, sb, phys);
> + if (buffer_delay(bh_result))
> + clear_buffer_delay(bh_result);
> +
> if (create) {
> + sector_t valid_blks;
> +
> + valid_blks = EXFAT_B_TO_BLK_ROUND_UP(ei->valid_size, sb);
> + if (iblock < valid_blks && iblock + max_blocks >= valid_blks) {
> + max_blocks = valid_blks - iblock;
> + goto done;
> + }
I don't know why this check is needed. And Why do you call
exfat_map_new_buffer() about < valid blocks ?
> +
> err = exfat_map_new_buffer(ei, bh_result, pos);
> if (err) {
> exfat_fs_error(sb,
