Re: [PATCH v3 0/3] mm: improve pte updates and dirty/accessed

Linus Torvalds
2020-12-20T18:00:29Z

On Sat, Dec 19, 2020 at 8:55 PM Nicholas Piggin <npiggin@gmail.com> wrote:
>
> Time to get this old series out again. Since last time, Bibo found a
> couple of the same cases I did (for MIPS only) which I extend to all
> archs, and I dropped the "make the pte dirty if the fork parent was
> dirty" due to Linus pointing out a dirty PTE costs more to unmap. It
> didn't seem to help a great deal anyway on the access-side fortunately.

Looks ok to me. I'm surprised it's all that noticeable, but I don't
see anything worrisome in the patches.

Linus