Re: [PATCH RFC 09/39] mm/huge_memory: page_add_file_rmap() -> folio_add_file_rmap_pmd()

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On 12/4/2023 10:21 PM, David Hildenbrand wrote:
Let's convert remove_migration_pmd() and while at it, perform some folio
conversion.

Signed-off-by: David Hildenbrand <david@xxxxxxxxxx>

Reviewed-by: Yin Fengwei <fengwei.yin@xxxxxxxxx>

---
  mm/huge_memory.c | 11 ++++++-----
  1 file changed, 6 insertions(+), 5 deletions(-)

diff --git a/mm/huge_memory.c b/mm/huge_memory.c
index 4f542444a91f2..cb33c6e0404cf 100644
--- a/mm/huge_memory.c
+++ b/mm/huge_memory.c
@@ -3276,6 +3276,7 @@ int set_pmd_migration_entry(struct page_vma_mapped_walk *pvmw,
void remove_migration_pmd(struct page_vma_mapped_walk *pvmw, struct page *new)
  {
+	struct folio *folio = page_folio(new);
  	struct vm_area_struct *vma = pvmw->vma;
  	struct mm_struct *mm = vma->vm_mm;
  	unsigned long address = pvmw->address;
@@ -3287,7 +3288,7 @@ void remove_migration_pmd(struct page_vma_mapped_walk *pvmw, struct page *new)
  		return;
entry = pmd_to_swp_entry(*pvmw->pmd);
-	get_page(new);
+	folio_get(folio);
  	pmde = mk_huge_pmd(new, READ_ONCE(vma->vm_page_prot));
  	if (pmd_swp_soft_dirty(*pvmw->pmd))
  		pmde = pmd_mksoft_dirty(pmde);
@@ -3298,10 +3299,10 @@ void remove_migration_pmd(struct page_vma_mapped_walk *pvmw, struct page *new)
  	if (!is_migration_entry_young(entry))
  		pmde = pmd_mkold(pmde);
  	/* NOTE: this may contain setting soft-dirty on some archs */
-	if (PageDirty(new) && is_migration_entry_dirty(entry))
+	if (folio_test_dirty(folio) && is_migration_entry_dirty(entry))
  		pmde = pmd_mkdirty(pmde);
- if (PageAnon(new)) {
+	if (folio_test_anon(folio)) {
  		rmap_t rmap_flags = RMAP_COMPOUND;
if (!is_readable_migration_entry(entry))
@@ -3309,9 +3310,9 @@ void remove_migration_pmd(struct page_vma_mapped_walk *pvmw, struct page *new)
page_add_anon_rmap(new, vma, haddr, rmap_flags);
  	} else {
-		page_add_file_rmap(new, vma, true);
+		folio_add_file_rmap_pmd(folio, new, vma);
  	}
-	VM_BUG_ON(pmd_write(pmde) && PageAnon(new) && !PageAnonExclusive(new));
+	VM_BUG_ON(pmd_write(pmde) && folio_test_anon(folio) && !PageAnonExclusive(new));
  	set_pmd_at(mm, haddr, pvmw->pmd, pmde);
/* No need to invalidate - it was non-present before */




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