The patch titled
Subject: mm: huge_memory: use more folio api in __split_huge_page_tail()
has been added to the -mm mm-unstable branch. Its filename is
mm-huge_memory-use-more-folio-api-in-__split_huge_page_tail.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/mm-huge_memory-use-more-folio-api-in-__split_huge_page_tail.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: Kefeng Wang <wangkefeng.wang@xxxxxxxxxx>
Subject: mm: huge_memory: use more folio api in __split_huge_page_tail()
Date: Fri, 10 Nov 2023 11:33:21 +0800
Use more folio APIs to save six compound_head() calls in
__split_huge_page_tail().
Link: https://lkml.kernel.org/r/20231110033324.2455523-5-wangkefeng.wang@xxxxxxxxxx
Signed-off-by: Kefeng Wang <wangkefeng.wang@xxxxxxxxxx>
Reviewed-by: Matthew Wilcox (Oracle) <willy@xxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/huge_memory.c | 12 ++++++------
1 file changed, 6 insertions(+), 6 deletions(-)
--- a/mm/huge_memory.c~mm-huge_memory-use-more-folio-api-in-__split_huge_page_tail
+++ a/mm/huge_memory.c
@@ -2631,13 +2631,13 @@ static void __split_huge_page_tail(struc
clear_compound_head(page_tail);
/* Finally unfreeze refcount. Additional reference from page cache. */
- page_ref_unfreeze(page_tail, 1 + (!PageAnon(head) ||
- PageSwapCache(head)));
+ page_ref_unfreeze(page_tail, 1 + (!folio_test_anon(folio) ||
+ folio_test_swapcache(folio)));
- if (page_is_young(head))
- set_page_young(page_tail);
- if (page_is_idle(head))
- set_page_idle(page_tail);
+ if (folio_test_young(folio))
+ folio_set_young(new_folio);
+ if (folio_test_idle(folio))
+ folio_set_idle(new_folio);
folio_xchg_last_cpupid(new_folio, folio_last_cpupid(folio));
_
Patches currently in -mm which might be from wangkefeng.wang@xxxxxxxxxx are
mm-ksm-use-more-folio-api-in-ksm_might_need_to_copy.patch
mm-memory-use-a-folio-in-validate_page_before_insert.patch
mm-memory-rename-page_copy_prealloc-to-folio_prealloc.patch
mm-memory-use-a-folio-in-do_cow_fault.patch
mm-memory-use-folio_prealloc-in-wp_page_copy.patch
mm-huge_memory-use-more-folio-api-in-__split_huge_page_tail.patch
