The patch titled
Subject: mm: memory: make numa_migrate_prep() to take a folio
has been added to the -mm mm-unstable branch. Its filename is
mm-memory-make-numa_migrate_prep-to-take-a-folio.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/mm-memory-make-numa_migrate_prep-to-take-a-folio.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: make numa_migrate_prep() to take a folio
Date: Thu, 21 Sep 2023 15:44:15 +0800
In preparation for large folio numa balancing, make numa_migrate_prep() to
take a folio, no functional change intended.
Link: https://lkml.kernel.org/r/20230921074417.24004-5-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>
---
mm/huge_memory.c | 2 +-
mm/internal.h | 2 +-
mm/memory.c | 9 ++++-----
3 files changed, 6 insertions(+), 7 deletions(-)
--- a/mm/huge_memory.c~mm-memory-make-numa_migrate_prep-to-take-a-folio
+++ a/mm/huge_memory.c
@@ -1556,7 +1556,7 @@ vm_fault_t do_huge_pmd_numa_page(struct
*/
if (node_is_toptier(nid))
last_cpupid = page_cpupid_last(&folio->page);
- target_nid = numa_migrate_prep(&folio->page, vma, haddr, nid, &flags);
+ target_nid = numa_migrate_prep(folio, vma, haddr, nid, &flags);
if (target_nid == NUMA_NO_NODE) {
folio_put(folio);
goto out_map;
--- a/mm/internal.h~mm-memory-make-numa_migrate_prep-to-take-a-folio
+++ a/mm/internal.h
@@ -984,7 +984,7 @@ void vunmap_range_noflush(unsigned long
void __vunmap_range_noflush(unsigned long start, unsigned long end);
-int numa_migrate_prep(struct page *page, struct vm_area_struct *vma,
+int numa_migrate_prep(struct folio *folio, struct vm_area_struct *vma,
unsigned long addr, int page_nid, int *flags);
void free_zone_device_page(struct page *page);
--- a/mm/memory.c~mm-memory-make-numa_migrate_prep-to-take-a-folio
+++ a/mm/memory.c
@@ -4727,10 +4727,10 @@ static vm_fault_t do_fault(struct vm_fau
return ret;
}
-int numa_migrate_prep(struct page *page, struct vm_area_struct *vma,
+int numa_migrate_prep(struct folio *folio, struct vm_area_struct *vma,
unsigned long addr, int page_nid, int *flags)
{
- get_page(page);
+ folio_get(folio);
/* Record the current PID acceesing VMA */
vma_set_access_pid_bit(vma);
@@ -4741,7 +4741,7 @@ int numa_migrate_prep(struct page *page,
*flags |= TNF_FAULT_LOCAL;
}
- return mpol_misplaced(page, vma, addr);
+ return mpol_misplaced(&folio->page, vma, addr);
}
static vm_fault_t do_numa_page(struct vm_fault *vmf)
@@ -4815,8 +4815,7 @@ static vm_fault_t do_numa_page(struct vm
last_cpupid = (-1 & LAST_CPUPID_MASK);
else
last_cpupid = page_cpupid_last(&folio->page);
- target_nid = numa_migrate_prep(&folio->page, vma, vmf->address, nid,
- &flags);
+ target_nid = numa_migrate_prep(folio, vma, vmf->address, nid, &flags);
if (target_nid == NUMA_NO_NODE) {
folio_put(folio);
goto out_map;
_
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
