The patch titled
Subject: mm: allow non-hugetlb large folios to be batch processed
has been added to the -mm mm-unstable branch. Its filename is
mm-allow-non-hugetlb-large-folios-to-be-batch-processed.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/mm-allow-non-hugetlb-large-folios-to-be-batch-processed.patch
This patch will later appear in the mm-unstable branch at
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
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------------------------------------------------------
From: "Matthew Wilcox (Oracle)" <willy@xxxxxxxxxxxxx>
Subject: mm: allow non-hugetlb large folios to be batch processed
Date: Tue, 27 Feb 2024 17:42:44 +0000
Hugetlb folios still get special treatment, but normal large folios can
now be freed by free_unref_folios(). This should have a reasonable
performance impact, TBD.
Link: https://lkml.kernel.org/r/20240227174254.710559-11-willy@xxxxxxxxxxxxx
Signed-off-by: Matthew Wilcox (Oracle) <willy@xxxxxxxxxxxxx>
Reviewed-by: Ryan Roberts <ryan.roberts@xxxxxxx>
Cc: David Hildenbrand <david@xxxxxxxxxx>
Cc: Mel Gorman <mgorman@xxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/swap.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
--- a/mm/swap.c~mm-allow-non-hugetlb-large-folios-to-be-batch-processed
+++ a/mm/swap.c
@@ -1003,12 +1003,13 @@ void folios_put_refs(struct folio_batch
if (!folio_ref_sub_and_test(folio, nr_refs))
continue;
- if (folio_test_large(folio)) {
+ /* hugetlb has its own memcg */
+ if (folio_test_hugetlb(folio)) {
if (lruvec) {
unlock_page_lruvec_irqrestore(lruvec, flags);
lruvec = NULL;
}
- __folio_put_large(folio);
+ free_huge_folio(folio);
continue;
}
_
Patches currently in -mm which might be from willy@xxxxxxxxxxxxx are
mm-support-order-1-folios-in-the-page-cache.patch
mm-make-folios_put-the-basis-of-release_pages.patch
mm-convert-free_unref_page_list-to-use-folios.patch
mm-add-free_unref_folios.patch
mm-use-folios_put-in-__folio_batch_release.patch
memcg-add-mem_cgroup_uncharge_folios.patch
mm-remove-use-of-folio-list-from-folios_put.patch
mm-use-free_unref_folios-in-put_pages_list.patch
mm-use-__page_cache_release-in-folios_put.patch
mm-handle-large-folios-in-free_unref_folios.patch
mm-allow-non-hugetlb-large-folios-to-be-batch-processed.patch
mm-free-folios-in-a-batch-in-shrink_folio_list.patch
mm-free-folios-directly-in-move_folios_to_lru.patch
memcg-remove-mem_cgroup_uncharge_list.patch
mm-remove-free_unref_page_list.patch
mm-remove-lru_to_page.patch
mm-convert-free_pages_and_swap_cache-to-use-folios_put.patch
mm-use-a-folio-in-__collapse_huge_page_copy_succeeded.patch
mm-convert-free_swap_cache-to-take-a-folio.patch
