[PATCH v1 18/39] mm/ksm: page_add_anon_rmap() -> folio_add_anon_rmap_pte()

David Hildenbrand
2023-12-11T15:58:27Z

Let's convert replace_page(). While at it, perform some folio
conversion.

Signed-off-by: David Hildenbrand <david@redhat.com>
---
mm/ksm.c | 8 +++++---
1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/mm/ksm.c b/mm/ksm.c
index b93389a3780e..2b6888ad1470 100644
--- a/mm/ksm.c
+++ b/mm/ksm.c
@@ -1199,6 +1199,7 @@ static int write_protect_page(struct vm_area_struct *vma, struct page *page,
static int replace_page(struct vm_area_struct *vma, struct page *page,
struct page *kpage, pte_t orig_pte)
{
+ struct folio *kfolio = page_folio(kpage);
struct mm_struct *mm = vma->vm_mm;
struct folio *folio;
pmd_t *pmd;
@@ -1238,15 +1239,16 @@ static int replace_page(struct vm_area_struct *vma, struct page *page,
goto out_mn;
}
VM_BUG_ON_PAGE(PageAnonExclusive(page), page);
- VM_BUG_ON_PAGE(PageAnon(kpage) && PageAnonExclusive(kpage), kpage);
+ VM_BUG_ON_FOLIO(folio_test_anon(kfolio) && PageAnonExclusive(kpage),
+ kfolio);

/*
* No need to check ksm_use_zero_pages here: we can only have a
* zero_page here if ksm_use_zero_pages was enabled already.
*/
if (!is_zero_pfn(page_to_pfn(kpage))) {
- get_page(kpage);
- page_add_anon_rmap(kpage, vma, addr, RMAP_NONE);
+ folio_get(kfolio);
+ folio_add_anon_rmap_pte(kfolio, kpage, vma, addr, RMAP_NONE);
newpte = mk_pte(kpage, vma->vm_page_prot);
} else {
/*
--
2.43.0