On 5/23/23 01:17, Ming Lei wrote:
On Tue, May 23, 2023 at 2:39 AM Bart Van Assche <bvanassche@xxxxxxx> wrote:
Requeue requests instead of sending these to the dispatch list if a CPU
is unplugged. This gives the I/O scheduler the chance to preserve the
order of zoned write requests.
But the affected code path is only for queue with none scheduler, do you
think none can maintain the order for write requests?
Hi Ming,
Doesn't blk_mq_insert_requests() insert requests in ctx->rq_lists[type]
whether or not an I/O scheduler is active?
I haven't found any code in blk_mq_hctx_notify_dead() that makes this
function behave differently based on whether or not an I/O scheduler has
been associated with the request queue. Did I perhaps overlook something?
Thanks,
Bart.
