On Tue, Jun 10, 2025 at 10:59 PM Michael Banck <mba...@gmx.net> wrote: > I don't have an opinion here, I think it would be ok to just define it > to 16 if it is undefined and if the Hurd people want something better at > some point, they should submit patches.
Cool. I will go ahead and do that, as you proposed, and back-patch appropriately. This will have zero effect on any other system, and is justifiable as a bug fix based on the POSIX spec. Hurd builds will be slightly stunted in the sense that they won't be able to set io_combine_limit > 128kB. Fixing that will be a matter for another day (I'm not sure if it's worth bothering with sysconf(_SC_IOV_MAX), I guess they probably just return -1 anyway (meaning unlimited), which means that we'd apply our own cap of 128, so maybe it's easier to just skip the middle step and somehow just use 128 already... but yeah, patches welcome for v19).
