On Wed, Jun 25, 2025 at 11:28:03AM +0530, Dev Jain wrote:
> This patch series uses PTE batching to optimize two functions, and
> also addresses a race condition.
Kinda succinct, be nice to expand a little. I know it can end up being a
little duplicative, but I think more information is always better than less
(as long as not truly overwrought)
>
> ---
> @David I did not make the clear_full_ptes clean up since that will require
> some more work than I originally thought :)
>
> v1->v2:
> - Use for loop instead of do-while loop (Lorenzo)
> - Remove folio_test_large check since the subpage-check condition
> will imply that (Baolin)
> - Combine patch 1 and 2 into this series, add new patch 3
One small nit, it'd be really handy to include links to previous series to
help us find them :P
As this one combines a couple earlier (which is nice!) but handy just for
comparison's sake :>)
>
> Dev Jain (3):
> khugepaged: Optimize __collapse_huge_page_copy_succeeded() by PTE
> batching
> khugepaged: Optimize collapse_pte_mapped_thp() for large folios by PTE
> batching
> khugepaged: Reduce race probability between migration and khugepaged
>
> mm/khugepaged.c | 77 ++++++++++++++++++++++++++++++++++++-------------
> 1 file changed, 57 insertions(+), 20 deletions(-)
>
> --
> 2.30.2
>