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mm/hugetlb: convert alloc_migrate_huge_page to folios

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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@oracle.com
Signed-off-by: Sidhartha Kumar <sidhartha.kumar@oracle.com>
Reviewed-by: Mike Kravetz <mike.kravetz@oracle.com>
Cc: John Hubbard <jhubbard@nvidia.com>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Muchun Song <songmuchun@bytedance.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Sidhartha Kumar 2023-01-13 16:30:55 -06:00 committed by Andrew Morton
parent ff7d853b03
commit e37d3e838d
3 changed files with 16 additions and 13 deletions
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6
include/linux/hugetlb.h
View File

@ -719,7 +719,7 @@ 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);
@ -1040,8 +1040,8 @@ static inline struct page *alloc_huge_page(struct vm_area_struct *vma,
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;

18
mm/hugetlb.c
View File

@ -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_page(struct hstate *h, gfp_t gfp_mask,
*/
folio_set_hugetlb_temporary(folio);
return &folio->page;
return folio;
}
/*
@ -2472,8 +2472,8 @@ struct folio *alloc_buddy_hugetlb_folio_with_mpol(struct hstate *h,
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(struct hstate *h, int preferred_nid,
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 hstate *h, struct vm_area_struct *vma,
{
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;
}
/*

5
mm/migrate.c
View File

@ -1663,6 +1663,7 @@ struct page *alloc_migration_target(struct page *page, unsigned long private)
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;
@ -1677,7 +1678,9 @@ struct page *alloc_migration_target(struct page *page, unsigned long private)
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)) {