The quilt patch titled
Subject: mm: use folio_xchg_last_cpupid() in wp_page_reuse()
has been removed from the -mm tree. Its filename was
mm-use-folio_xchg_last_cpupid-in-wp_page_reuse.patch
This patch was dropped because it was merged into the mm-stable branch
of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
------------------------------------------------------
From: Kefeng Wang <wangkefeng.wang@xxxxxxxxxx>
Subject: mm: use folio_xchg_last_cpupid() in wp_page_reuse()
Date: Wed, 18 Oct 2023 22:08:05 +0800
Convert to use folio_xchg_last_cpupid() in wp_page_reuse(), and remove
page variable. Since now only normal and PMD-mapped page is handled by
numa balancing, it's enough to only update the entire folio's last cpupid.
Link: https://lkml.kernel.org/r/20231018140806.2783514-19-wangkefeng.wang@xxxxxxxxxx
Signed-off-by: Kefeng Wang <wangkefeng.wang@xxxxxxxxxx>
Cc: David Hildenbrand <david@xxxxxxxxxx>
Cc: Huang Ying <ying.huang@xxxxxxxxx>
Cc: Ingo Molnar <mingo@xxxxxxxxxx>
Cc: Juri Lelli <juri.lelli@xxxxxxxxxx>
Cc: Matthew Wilcox (Oracle) <willy@xxxxxxxxxxxxx>
Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Cc: Vincent Guittot <vincent.guittot@xxxxxxxxxx>
Cc: Zi Yan <ziy@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/memory.c | 19 ++++++++++---------
1 file changed, 10 insertions(+), 9 deletions(-)
--- a/mm/memory.c~mm-use-folio_xchg_last_cpupid-in-wp_page_reuse
+++ a/mm/memory.c
@@ -3019,19 +3019,20 @@ static inline void wp_page_reuse(struct
__releases(vmf->ptl)
{
struct vm_area_struct *vma = vmf->vma;
- struct page *page = vmf->page;
pte_t entry;
VM_BUG_ON(!(vmf->flags & FAULT_FLAG_WRITE));
- VM_BUG_ON(folio && folio_test_anon(folio) && !PageAnonExclusive(page));
- /*
- * Clear the pages cpupid information as the existing
- * information potentially belongs to a now completely
- * unrelated process.
- */
- if (page)
- page_cpupid_xchg_last(page, (1 << LAST_CPUPID_SHIFT) - 1);
+ if (folio) {
+ VM_BUG_ON(folio_test_anon(folio) &&
+ !PageAnonExclusive(vmf->page));
+ /*
+ * Clear the folio's cpupid information as the existing
+ * information potentially belongs to a now completely
+ * unrelated process.
+ */
+ folio_xchg_last_cpupid(folio, (1 << LAST_CPUPID_SHIFT) - 1);
+ }
flush_cache_page(vma, vmf->address, pte_pfn(vmf->orig_pte));
entry = pte_mkyoung(vmf->orig_pte);
_
Patches currently in -mm which might be from wangkefeng.wang@xxxxxxxxxx are
