Re: [PATCH 01/13] block: freeze queue when updating zone resources

Hannes Reinecke
2025-11-03T11:17:37Z

On 10/31/25 07:12, Damien Le Moal wrote:
> Modify disk_update_zone_resources() to freeze the device queue before
> updating the number of zones, zone capacity and other zone related
> resources. The locking order resulting from the call to
> queue_limits_commit_update_frozen() is preserved, that is, the queue
> limits lock is first taken by calling queue_limits_start_update() before
> freezing the queue, and the queue is unfrozen after executing
> queue_limits_commit_update(), which replaces the call to
> queue_limits_commit_update_frozen().
>
> This change ensures that there are no in-flights I/Os when the zone
> resources are updated due to a zone revalidation.
>
> Fixes: 0b83c86b444a ("block: Prevent potential deadlock in blk_revalidate_disk_zones()")
> Cc: stable@vger.kernel.org
> Signed-off-by: Damien Le Moal <dlemoal@kernel.org>
> ---
> block/blk-zoned.c | 19 ++++++++++++++-----
> 1 file changed, 14 insertions(+), 5 deletions(-)
>
Reviewed-by: Hannes Reinecke <hare@suse.de>

Cheers,

Hannes
--
Dr. Hannes Reinecke Kernel Storage Architect
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