Re: [PATCH v1 0/4] smaps / mm/gup: fix gup_can_follow_protnone fallout

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On 7/28/23 14:49, Peter Xu wrote:
The story of how FOLL_NUMA and FOLL_FORCE became entangled was enlightening,
by the way, and now that I've read it I don't want to go back. :)

Yeah I fully agree we should hopefully remove the NUMA / FORCE
tangling.. even if we want to revert back to the FOLL_NUMA flag we may want
to not revive that specific part.  I had a feeling that we're all on the
same page there.


Yes, I think so. :)

It's more about the further step to make FOLL_NUMA opt-in for GUP.

Let's say "FOLL_HONOR_NUMA_FAULT" for this next discussion, but yes. So
given that our API allows passing in FOLL_ flags, I don't understand the
objection to letting different callers pass in, or not pass in, that
flag.

It's the perfect way to clean up the whole thing. As Linus suggested
slightly earlier here, there can be a comment at the call site,
explaining why KVM needs FOLL_HONOR_NUMA_FAULT, and you're good, right?


thanks,
--
John Hubbard
NVIDIA





[Index of Archives]     [Linux ARM Kernel]     [Linux ARM]     [Linux Omap]     [Fedora ARM]     [IETF Annouce]     [Bugtraq]     [Linux OMAP]     [Linux MIPS]     [eCos]     [Asterisk Internet PBX]     [Linux API]

  Powered by Linux