Re: [PATCH 1/8] fork: add helper to clone a process

[Christian Brauner]

On Fri, Sep 17, 2021 at 09:01:06AM +0100, Christoph Hellwig wrote:
> On Fri, Sep 17, 2021 at 09:44:40AM +0200, Christian Brauner wrote:
> > > generally want a printf-like varargs caling conventions.  I'd also
> > > much prefer to hide as much as possible in the actual helper.  That is
> > > build a helper that gets the name, a flag to ignore the singals etc
> > > instead of exporting all these random low-level helpers.
> > 
> > Yes, I think that's really what we want here.
> 
> In a way this would mean enhancing the kthread API to also support I/O
> threads.

Kinda, it's a kthread in so far as it has been created by the kernel and
not through a regular syscall path. But it's not really using any of the
kthread.c stuff.

I think the general push of the series is right. We should aim for a
helper that allows a driver - similar to what uring already does - to
create a task with the context of the caller.

After the fork/clone rework that I did it shouldn't be that difficult to
do. The uring patch did show that it's fairly straightforward.