Re: [PATCH 0/3] vmsplice: make vmsplice a trivial wrapper for preadv2/pwritev2

[Miklos Szeredi]

On Mon, 1 Jun 2026 at 19:33, Al Viro <viro@xxxxxxxxxxxxxxxxxx> wrote:
>
> On Mon, Jun 01, 2026 at 10:17:23AM -0700, Linus Torvalds wrote:
>
> > TLDR: maybe we could ghet rid of "f_op->splice_read". *That* would be
> > a big simplification.
>
> FUSE might be interesting - fuse_dev_splice_read() and its ilk.
> Communications between the kernel and fuse server at least used to
> seriously want that, so that would be one place to look for unhappy
> userland...
>
> splice-related logics in fs/fuse/dev.c is interesting; another place
> like this is kernel/trace/, but I'm less familiar with that one.

[Cc: Joanne, fuse-devel]

I'd favor simplification, but care is needed to not regress performance.

Joanne might be in a better position to say something about relative
performance of various transport modes in fuse.

Thanks,
Miklos