Re: [PATCH stable] block/mq-deadline: fix different priority request on the same zone

[Bart Van Assche]

On 5/16/24 18:44, Wu Bo wrote:
> So I figured this solution to fix this priority issue on zoned device. It sure
> raises the overhead but can do fix it.

Something I should have realized earlier is that this patch is not
necessary with the latest upstream kernel (v6.10-rc1). Damien's zoned
write plugging patch series has been merged. Hence, I/O schedulers,
including the mq-deadline I/O schedulers, will only see a single
zoned write at a time per zone. So it is no longer possible that
zoned writes are reordered by the I/O scheduler because of their I/O
priorities.

Thanks,

Bart.