Re: [PATCH RFC v4 1/3] block: add BIO_COMPLETE_IN_TASK for task-context completion

[Tal Zussman]

On 4/8/26 3:51 PM, Jens Axboe wrote:
> On 4/8/26 12: 48 PM, Tal Zussman wrote: > On 3/25/26 4: 14 PM, Jens Axboe wrote: 
>> 
>> Thanks! I'm going to give Dave's llist suggestion a shot on top of
>> this as it seems like it'll simplify this nicely. Looks like that'll
>> involve turning bio::bi_next into a union with a struct llist_node.
> 
> Since these lists can get long, I'd keep an eye on llist reversal
> overhead there...
> 

Going to send v5 shortly -- tested with and without the llist reversal and
it didn't seem to make much of a difference. This was on a single-disk VM
though, so any stress testing you could do would be very helpful.

Thanks,
Tal