Re: [PATCH] include/linux/pipe_fs_i: Add htmldoc annotation for "head_tail" member

[Linus Torvalds]

On Wed, 5 Mar 2025 at 08:08, K Prateek Nayak <kprateek.nayak@xxxxxxx> wrote:
>
> > And it turns out my worry about pipe_discard_from() was unnecessary.
> > Yes, the code is buggy. But no, it doesn't matter. Why? There are no
> > callers of that function ;)
>
]> I don't see any in kernel user of this helper currently so can the
> wrap-around issue be addressed and the helper be removed later?

Yes. That's what I did. I still would love to see

 - more testing

 - explicit limit checking in pipe_resize_ring()

and then I think we could make CONFIG_64BIT use the 16-bit
pipe_index_t too (because not doing so clearly was a mistake: it meant
that people didn't test the 32-bit case, so the wrap-around bugs
weren't as obvious).

                 Linus

                    Linus