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Subject[PATCH 6/9] mm/hugetlb: convert free_huge_page to folios
Date
Use folios inside free_huge_page(), this is in preparation for converting
hugetlb_cgroup_uncharge_page() to take in a folio.

Signed-off-by: Sidhartha Kumar <sidhartha.kumar@oracle.com>
---
mm/hugetlb.c | 27 ++++++++++++++-------------
1 file changed, 14 insertions(+), 13 deletions(-)

diff --git a/mm/hugetlb.c b/mm/hugetlb.c
index 44a9a6072c58..5228c2b805d2 100644
--- a/mm/hugetlb.c
+++ b/mm/hugetlb.c
@@ -1688,21 +1688,22 @@ void free_huge_page(struct page *page)
* Can't pass hstate in here because it is called from the
* compound page destructor.
*/
- struct hstate *h = page_hstate(page);
- int nid = page_to_nid(page);
- struct hugepage_subpool *spool = hugetlb_page_subpool(page);
+ struct folio *folio = page_folio(page);
+ struct hstate *h = folio_hstate(folio);
+ int nid = folio_nid(folio);
+ struct hugepage_subpool *spool = hugetlb_folio_subpool(folio);
bool restore_reserve;
unsigned long flags;

- VM_BUG_ON_PAGE(page_count(page), page);
- VM_BUG_ON_PAGE(page_mapcount(page), page);
+ VM_BUG_ON_FOLIO(folio_ref_count(folio), folio);
+ VM_BUG_ON_PAGE(folio_mapcount(folio), folio);

- hugetlb_set_page_subpool(page, NULL);
- if (PageAnon(page))
- __ClearPageAnonExclusive(page);
- page->mapping = NULL;
- restore_reserve = HPageRestoreReserve(page);
- ClearHPageRestoreReserve(page);
+ hugetlb_set_folio_subpool(folio, NULL);
+ if (folio_test_anon(folio))
+ __ClearPageAnonExclusive(&folio->page);
+ folio->mapping = NULL;
+ restore_reserve = folio_test_hugetlb_restore_reserve(folio);
+ folio_clear_hugetlb_restore_reserve(folio);

/*
* If HPageRestoreReserve was set on page, page allocation consumed a
@@ -1724,7 +1725,7 @@ void free_huge_page(struct page *page)
}

spin_lock_irqsave(&hugetlb_lock, flags);
- ClearHPageMigratable(page);
+ folio_clear_hugetlb_migratable(folio);
hugetlb_cgroup_uncharge_page(hstate_index(h),
pages_per_huge_page(h), page);
hugetlb_cgroup_uncharge_page_rsvd(hstate_index(h),
@@ -1732,7 +1733,7 @@ void free_huge_page(struct page *page)
if (restore_reserve)
h->resv_huge_pages++;

- if (HPageTemporary(page)) {
+ if (folio_test_hugetlb_temporary(folio)) {
remove_hugetlb_page(h, page, false);
spin_unlock_irqrestore(&hugetlb_lock, flags);
update_and_free_page(h, page, true);
--
2.31.1
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