Re: [PATCH] dm-delay: Prevent zoned write reordering on suspend

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On 4/11/25 03:10, Benjamin Marzinski wrote:
>>> Don't we only need to do that if anything is queued up due to a
>>> suspension?  Then again having a different patch might be premature
>>> optimization, it's not like anyone cares about dm-delay performance
>>> almost by definition :)
>>
>> True. I can add a list_empty check here. Will send a v2 with that.
> 
> I may be pointing out the obvious, but we can't just check if
> dc->delayed_bios is empty, since we pull the bios off the list before we
> submit them. We can only skip adding the bios if the list is empty and
> flush_delay_bios() isn't currently processing any bios.

Hehe, obvious when you hear it :) Good point !
I will not try to micro optimize this.

-- 
Damien Le Moal
Western Digital Research




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