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

On Mon, 1 Jun 2026 at 19:33, Al Viro [off-list ref] wrote:

On Mon, Jun 01, 2026 at 10:17:23AM -0700, Linus Torvalds wrote:

quoted

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