On 2025/06/11 13:44, Christoph Hellwig wrote:
> Bios queued up in the zone write plug have already gone through all all
> preparation in the submit_bio path, including the freeze protection.
>
> Submitting them through submit_bio_noacct_nocheck duplicates the work
> and can can cause deadlocks when freezing a queue with pending bio
> write plugs.
>
> Go straight to ->submit_bio or blk_mq_submit_bio to bypass the
> superfluous extra freeze protection and checks.
>
> Fixes: 9b1ce7f0c6f8 ("block: Implement zone append emulation")
> Reported-by: Bart Van Assche <bvanassche@xxxxxxx>
> Signed-off-by: Christoph Hellwig <hch@xxxxxx>
Reviewed-by: Damien Le Moal <dlemoal@xxxxxxxxxx>
Tested-by: Damien Le Moal <dlemoal@xxxxxxxxxx>
--
Damien Le Moal
Western Digital Research
