The patch titled
Subject: mm/hugetlb: convert alloc_migrate_huge_page to folios
has been added to the -mm mm-unstable branch. Its filename is
mm-hugetlb-convert-alloc_migrate_huge_page-to-folios.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/mm-hugetlb-convert-alloc_migrate_huge_page-to-folios.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: Sidhartha Kumar <sidhartha.kumar@xxxxxxxxxx>
Subject: mm/hugetlb: convert alloc_migrate_huge_page to folios
Date: Fri, 13 Jan 2023 16:30:55 -0600
Change alloc_huge_page_nodemask() to alloc_hugetlb_folio_nodemask() and
alloc_migrate_huge_page() to alloc_migrate_hugetlb_folio(). Both
functions now return a folio rather than a page.
Link: https://lkml.kernel.org/r/20230113223057.173292-7-sidhartha.kumar@xxxxxxxxxx
Signed-off-by: Sidhartha Kumar <sidhartha.kumar@xxxxxxxxxx>
Reviewed-by: Mike Kravetz <mike.kravetz@xxxxxxxxxx>
Cc: John Hubbard <jhubbard@xxxxxxxxxx>
Cc: Matthew Wilcox <willy@xxxxxxxxxxxxx>
Cc: Muchun Song <songmuchun@xxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
--- a/include/linux/hugetlb.h~mm-hugetlb-convert-alloc_migrate_huge_page-to-folios
+++ a/include/linux/hugetlb.h
@@ -718,7 +718,7 @@ struct huge_bootmem_page {
int isolate_or_dissolve_huge_page(struct page *page, struct list_head *list);
struct page *alloc_huge_page(struct vm_area_struct *vma,
unsigned long addr, int avoid_reserve);
-struct page *alloc_huge_page_nodemask(struct hstate *h, int preferred_nid,
+struct folio *alloc_hugetlb_folio_nodemask(struct hstate *h, int preferred_nid,
nodemask_t *nmask, gfp_t gfp_mask);
struct page *alloc_huge_page_vma(struct hstate *h, struct vm_area_struct *vma,
unsigned long address);
@@ -1039,8 +1039,8 @@ static inline struct page *alloc_huge_pa
return NULL;
}
-static inline struct page *
-alloc_huge_page_nodemask(struct hstate *h, int preferred_nid,
+static inline struct folio *
+alloc_hugetlb_folio_nodemask(struct hstate *h, int preferred_nid,
nodemask_t *nmask, gfp_t gfp_mask)
{
return NULL;
--- a/mm/hugetlb.c~mm-hugetlb-convert-alloc_migrate_huge_page-to-folios
+++ a/mm/hugetlb.c
@@ -2419,7 +2419,7 @@ out_unlock:
return folio;
}
-static struct page *alloc_migrate_huge_page(struct hstate *h, gfp_t gfp_mask,
+static struct folio *alloc_migrate_hugetlb_folio(struct hstate *h, gfp_t gfp_mask,
int nid, nodemask_t *nmask)
{
struct folio *folio;
@@ -2439,7 +2439,7 @@ static struct page *alloc_migrate_huge_p
*/
folio_set_hugetlb_temporary(folio);
- return &folio->page;
+ return folio;
}
/*
@@ -2472,8 +2472,8 @@ struct folio *alloc_buddy_hugetlb_folio_
return folio;
}
-/* page migration callback function */
-struct page *alloc_huge_page_nodemask(struct hstate *h, int preferred_nid,
+/* folio migration callback function */
+struct folio *alloc_hugetlb_folio_nodemask(struct hstate *h, int preferred_nid,
nodemask_t *nmask, gfp_t gfp_mask)
{
spin_lock_irq(&hugetlb_lock);
@@ -2484,12 +2484,12 @@ struct page *alloc_huge_page_nodemask(st
preferred_nid, nmask);
if (folio) {
spin_unlock_irq(&hugetlb_lock);
- return &folio->page;
+ return folio;
}
}
spin_unlock_irq(&hugetlb_lock);
- return alloc_migrate_huge_page(h, gfp_mask, preferred_nid, nmask);
+ return alloc_migrate_hugetlb_folio(h, gfp_mask, preferred_nid, nmask);
}
/* mempolicy aware migration callback */
@@ -2498,16 +2498,16 @@ struct page *alloc_huge_page_vma(struct
{
struct mempolicy *mpol;
nodemask_t *nodemask;
- struct page *page;
+ struct folio *folio;
gfp_t gfp_mask;
int node;
gfp_mask = htlb_alloc_mask(h);
node = huge_node(vma, address, gfp_mask, &mpol, &nodemask);
- page = alloc_huge_page_nodemask(h, node, nodemask, gfp_mask);
+ folio = alloc_hugetlb_folio_nodemask(h, node, nodemask, gfp_mask);
mpol_cond_put(mpol);
- return page;
+ return &folio->page;
}
/*
--- a/mm/migrate.c~mm-hugetlb-convert-alloc_migrate_huge_page-to-folios
+++ a/mm/migrate.c
@@ -1996,6 +1996,7 @@ struct page *alloc_migration_target(stru
struct migration_target_control *mtc;
gfp_t gfp_mask;
unsigned int order = 0;
+ struct folio *hugetlb_folio = NULL;
struct folio *new_folio = NULL;
int nid;
int zidx;
@@ -2010,7 +2011,9 @@ struct page *alloc_migration_target(stru
struct hstate *h = folio_hstate(folio);
gfp_mask = htlb_modify_alloc_mask(h, gfp_mask);
- return alloc_huge_page_nodemask(h, nid, mtc->nmask, gfp_mask);
+ hugetlb_folio = alloc_hugetlb_folio_nodemask(h, nid,
+ mtc->nmask, gfp_mask);
+ return &hugetlb_folio->page;
}
if (folio_test_large(folio)) {
_
Patches currently in -mm which might be from sidhartha.kumar@xxxxxxxxxx are
mm-move-folio_set_compound_order-to-mm-internalh.patch
mm-introduce-folio_is_pfmemalloc.patch
mm-remove-the-hugetlb-field-from-struct-page.patch
mm-memory-failure-convert-__get_huge_page_for_hwpoison-to-folios.patch
mm-memory-failure-convert-try_memory_failure_hugetlb-to-folios.patch
mm-memory-failure-convert-hugetlb_clear_page_hwpoison-to-folios.patch
mm-memory-failure-convert-free_raw_hwp_pages-to-folios.patch
mm-memory-failure-convert-raw_hwp_list_head-to-folios.patch
mm-memory-failure-convert-__free_raw_hwp_pages-to-folios.patch
mm-memory-failure-convert-hugetlb_set_page_hwpoison-to-folios.patch
mm-memory-failure-convert-unpoison_memory-to-folios.patch
mm-hugetlb-convert-isolate_hugetlb-to-folios.patch
mm-hugetlb-convert-__update_and_free_page-to-folios.patch
mm-hugetlb-convert-dequeue_hugetlb_page-functions-to-folios.patch
mm-hugetlb-convert-alloc_surplus_huge_page-to-folios.patch
mm-hugetlb-increase-use-of-folios-in-alloc_huge_page.patch
mm-hugetlb-convert-alloc_migrate_huge_page-to-folios.patch
mm-hugetlb-convert-restore_reserve_on_error-to-folios.patch
mm-hugetlb-convert-demote_free_huge_page-to-folios.patch
