On Fri, Jun 24, 2022 at 09:23:04PM -0400, Peter Xu wrote: > If to go back to the original question with a shorter answer: if the ioctl > context that GUP upon a page that will never be with a uffd context, then > it's probably not gonna help at all.. at least not before we use > FAULT_FLAG_INTERRUPTIBLE outside uffd page fault handling. I think I would be more interested in this if it could abort a swap in, for instance. Doesn't this happen if it flows the interruptible flag into the VMA's fault handler? Jason