erofs-utils: use compressed pclusters to mark fragments

The decoded lengths of uncompressed pclusters should be
strictly no more than encoded lengths.

Fixes: 9fa9b017f773 ("erofs-utils: mkfs: support fragments")
Reviewed-by: Yue Hu <huyue2@coolpad.com>
Signed-off-by: Gao Xiang <hsiangkao@linux.alibaba.com>
Link: https://lore.kernel.org/r/20230228185459.117762-2-hsiangkao@linux.alibaba.com
1 file changed