The patch titled
Subject: mm: memory: add vm_normal_folio_pmd()
has been added to the -mm mm-unstable branch. Its filename is
mm-memory-add-vm_normal_folio_pmd.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/mm-memory-add-vm_normal_folio_pmd.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: memory: add vm_normal_folio_pmd()
Date: Thu, 21 Sep 2023 15:44:12 +0800
Patch series "mm: convert numa balancing functions to use a folio", v2.
do_numa_pages() only handles non-compound pages, and only PMD-mapped THPs
are handled in do_huge_pmd_numa_page(). But a large, PTE-mapped folio
will be supported so let's convert more numa balancing functions to
use/take a folio in preparation for that, no functional change intended
for now.
This patch (of 6):
The new vm_normal_folio_pmd() wrapper is similar to vm_normal_folio(),
which allow them to completely replace the struct page variables with
struct folio variables.
Link: https://lkml.kernel.org/r/20230921074417.24004-1-wangkefeng.wang@xxxxxxxxxx
Link: https://lkml.kernel.org/r/20230921074417.24004-2-wangkefeng.wang@xxxxxxxxxx
Signed-off-by: Kefeng Wang <wangkefeng.wang@xxxxxxxxxx>
Cc: David Hildenbrand <david@xxxxxxxxxx>
Cc: "Huang, Ying" <ying.huang@xxxxxxxxx>
Cc: Hugh Dickins <hughd@xxxxxxxxxx>
Cc: Matthew Wilcox (Oracle) <willy@xxxxxxxxxxxxx>
Cc: Mike Kravetz <mike.kravetz@xxxxxxxxxx>
Cc: Zi Yan <ziy@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
include/linux/mm.h | 2 ++
mm/memory.c | 10 ++++++++++
2 files changed, 12 insertions(+)
--- a/include/linux/mm.h~mm-memory-add-vm_normal_folio_pmd
+++ a/include/linux/mm.h
@@ -2327,6 +2327,8 @@ struct folio *vm_normal_folio(struct vm_
pte_t pte);
struct page *vm_normal_page(struct vm_area_struct *vma, unsigned long addr,
pte_t pte);
+struct folio *vm_normal_folio_pmd(struct vm_area_struct *vma,
+ unsigned long addr, pmd_t pmd);
struct page *vm_normal_page_pmd(struct vm_area_struct *vma, unsigned long addr,
pmd_t pmd);
--- a/mm/memory.c~mm-memory-add-vm_normal_folio_pmd
+++ a/mm/memory.c
@@ -689,6 +689,16 @@ struct page *vm_normal_page_pmd(struct v
out:
return pfn_to_page(pfn);
}
+
+struct folio *vm_normal_folio_pmd(struct vm_area_struct *vma,
+ unsigned long addr, pmd_t pmd)
+{
+ struct page *page = vm_normal_page_pmd(vma, addr, pmd);
+
+ if (page)
+ return page_folio(page);
+ return NULL;
+}
#endif
static void restore_exclusive_pte(struct vm_area_struct *vma,
_
Patches currently in -mm which might be from wangkefeng.wang@xxxxxxxxxx are
mm-migrate-remove-pagetranshuge-check-in-numamigrate_isolate_page.patch
mm-migrate-remove-thp-mapcount-check-in-numamigrate_isolate_page.patch
mm-migrate-convert-numamigrate_isolate_page-to-numamigrate_isolate_folio.patch
mm-migrate-convert-migrate_misplaced_page-to-migrate_misplaced_folio.patch
mm-migrate-use-__folio_test_movable.patch
mm-migrate-use-a-folio-in-add_page_for_migration.patch
mm-migrate-remove-pagehead-check-for-hugetlb-in-add_page_for_migration.patch
mm-migrate-remove-isolated-variable-in-add_page_for_migration.patch
mm-memory-add-vm_normal_folio_pmd.patch
mm-huge_memory-use-a-folio-in-do_huge_pmd_numa_page.patch
mm-memory-use-a-folio-in-do_numa_page.patch
mm-memory-make-numa_migrate_prep-to-take-a-folio.patch
mm-mempolicy-make-mpol_misplaced-to-take-a-folio.patch
sched-numa-mm-make-numa-migrate-functions-to-take-a-folio.patch
