mm/rmap: Use a folio in page_mkclean_one()

folio_mkclean() already passes down a head page, so convert it
back to a folio.

Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>

diff --git a/mm/rmap.c b/mm/rmap.c
index e27ba41..b1d7f3e 100644 (file)
--- a/mm/rmap.c
+++ b/mm/rmap.c
@@ -930,13 +930,14 @@ int page_referenced(struct page *page,
 static bool page_mkclean_one(struct page *page, struct vm_area_struct *vma,
                            unsigned long address, void *arg)
 {
-       DEFINE_PAGE_VMA_WALK(pvmw, page, vma, address, PVMW_SYNC);
+       struct folio *folio = page_folio(page);
+       DEFINE_FOLIO_VMA_WALK(pvmw, folio, vma, address, PVMW_SYNC);
        struct mmu_notifier_range range;
        int *cleaned = arg;
 
        /*
         * We have to assume the worse case ie pmd for invalidation. Note that
-        * the page can not be free from this function.
+        * the folio can not be freed from this function.
         */
        mmu_notifier_range_init(&range, MMU_NOTIFY_PROTECTION_PAGE,
                                0, vma, vma->vm_mm, address,
@@ -968,14 +969,14 @@ static bool page_mkclean_one(struct page *page, struct vm_area_struct *vma,
                        if (!pmd_dirty(*pmd) && !pmd_write(*pmd))
                                continue;
 
-                       flush_cache_page(vma, address, page_to_pfn(page));
+                       flush_cache_page(vma, address, folio_pfn(folio));
                        entry = pmdp_invalidate(vma, address, pmd);
                        entry = pmd_wrprotect(entry);
                        entry = pmd_mkclean(entry);
                        set_pmd_at(vma->vm_mm, address, pmd, entry);
                        ret = 1;
 #else
-                       /* unexpected pmd-mapped page? */
+                       /* unexpected pmd-mapped folio? */
                        WARN_ON_ONCE(1);
 #endif
                }