[PATCH v1 26/39] mm/khugepaged: page_remove_rmap() -> folio_remove_rmap_pte()

David Hildenbrand
2023-12-11T15:58:16Z

Let's convert __collapse_huge_page_copy_succeeded() and
collapse_pte_mapped_thp(). While at it, perform some more folio
conversion in __collapse_huge_page_copy_succeeded().

We can get rid of release_pte_page().

Signed-off-by: David Hildenbrand <david@redhat.com>
---
mm/khugepaged.c | 17 +++++++----------
1 file changed, 7 insertions(+), 10 deletions(-)

diff --git a/mm/khugepaged.c b/mm/khugepaged.c
index de174d049e71..4d90c9548ec9 100644
--- a/mm/khugepaged.c
+++ b/mm/khugepaged.c
@@ -494,11 +494,6 @@ static void release_pte_folio(struct folio *folio)
folio_putback_lru(folio);
}

-static void release_pte_page(struct page *page)
-{
- release_pte_folio(page_folio(page));
-}
-
static void release_pte_pages(pte_t *pte, pte_t *_pte,
struct list_head *compound_pagelist)
{
@@ -687,6 +682,7 @@ static void __collapse_huge_page_copy_succeeded(pte_t *pte,
spinlock_t *ptl,
struct list_head *compound_pagelist)
{
+ struct folio *src_folio;
struct page *src_page;
struct page *tmp;
pte_t *_pte;
@@ -708,16 +704,17 @@ static void __collapse_huge_page_copy_succeeded(pte_t *pte,
}
} else {
src_page = pte_page(pteval);
- if (!PageCompound(src_page))
- release_pte_page(src_page);
+ src_folio = page_folio(src_page);
+ if (!folio_test_large(src_folio))
+ release_pte_folio(src_folio);
/*
* ptl mostly unnecessary, but preempt has to
* be disabled to update the per-cpu stats
- * inside page_remove_rmap().
+ * inside folio_remove_rmap_pte().
*/
spin_lock(ptl);
ptep_clear(vma->vm_mm, address, _pte);
- page_remove_rmap(src_page, vma, false);
+ folio_remove_rmap_pte(src_folio, src_page, vma);
spin_unlock(ptl);
free_page_and_swap_cache(src_page);
}
@@ -1624,7 +1621,7 @@ int collapse_pte_mapped_thp(struct mm_struct *mm, unsigned long addr,
* PTE dirty? Shmem page is already dirty; file is read-only.
*/
ptep_clear(mm, addr, pte);
- page_remove_rmap(page, vma, false);
+ folio_remove_rmap_pte(folio, page, vma);
nr_ptes++;
}

--
2.43.0