On Thu, 9 Feb 2023 13:50:30 -0800 (PST) Hugh Dickins <hughd@xxxxxxxxxx> wrote: > > > > > I'm not seeing anything in the [1/2] changelog which indicates that a > > backport is needed. IOW, > > Correct: it's just changing the errno for some racy cases from "you're > wrong, don't bother me again" to "it might be worth having another go": > not fixing an instability, as 2/2 was. > > > > > # cat .signature > > When fixing a bug, please describe the end-user visible effects of that bug. > > If whatever's being run by the end-user is coded to try again on -EAGAIN, > then the end-user will less often see occasional unexplained failures. > OK, thanks. I redid the changelog's final paragraph thusly: : In this situation, MADV_COLLAPSE returns -EINVAL when it should return : -EAGAIN. This could cause userspace to conclude that the syscall failed, : when it in fact could succeed by retrying.
