Re: [PATCH] block: fix disordered IO in the case recursive split

[Christoph Hellwig]

On Thu, Aug 21, 2025 at 04:56:33PM +0800, Yu Kuai wrote:
> Can you give some examples as how to chain the right way?

fs/xfs/xfs_bio_io.c: xfs_rw_bdev
fs/xfs/xfs_buf.c: xfs_buf_submit_bio
fs/xfs/xfs_log.c: xlog_write_iclog

> BTW, for all
> the io split case, should this order be fixed? I feel we should, this
> disorder can happen on any stack case, where top max_sector is greater
> than stacked disk.

Yes, I've been trying get Bart to fix this for a while instead of
putting in a workaround very similar to the one proposed here,
but so far nothing happened.