On Fri, 2 Jun 2023 08:11:47 -0400 Linus Torvalds wrote: > If then some *real* load ends up showing a regression, we may just be > screwed. Our current behavior may be buggy, but we have the rule that > once user space depends on kernel bugs, they become features pretty > much by definition, however much we might dislike it. > > At that point, we'll have to see what we can do - if anything. Can we have a provisional plan of how we'll fix it if someone does complain? We can't just revert David's work, and if none of the solutions are appealing - socket implementations may be left holding the bag. I dislike the magic zero sends, and I think you do, too. In case of TLS its unclear whether we should generate an empty record (like UDP would). Can we add an optional splice_end / short_splice / splice_underflow / splice_I_did_not_mean_to_set_more_on_the_previous_call_sorry callback to struct file_operations?
