Re: [PATCH v2 06/36] block: BdrvChildClass: add .get_parent_aio_context handler

[Vladimir Sementsov-Ogievskiy]

18.01.2021 18:13, Kevin Wolf wrote:
> Am 27.11.2020 um 15:44 hat Vladimir Sementsov-Ogievskiy geschrieben:
> > Add new handler to get aio context and implement it in all child
> > classes. Add corresponding public interface to be used soon.
> >
> > Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
>
> Hm, are you going to introduce cases where parent and child context
> don't match, or why is this a useful function?
>
> Even if so, I feel it shouldn't be any of the child's business what
> AioContext the parent uses.
>
> Well, maybe the rest of the series will answer this.

It's for the following patch, to not pass parent (as opaque) with it's class, 
and with its ctx in separate. Just to simplify the interface of the function, 
we are going to work with a lot.

Hm. I'll take this opportunity to say, that the terminology that calls graph edge 
"BdrvChild" always leads to the mess between parents and children.. 
"child_class" is a class of parent.. list of parents is list of children... It all would 
be a lot simpler to understand if BdrvChild was BdrvEdge or something like this.

--
Best regards,
Vladimir