Commit e83c09a2 authored by Matthew Wilcox (Oracle)'s avatar Matthew Wilcox (Oracle)
Browse files

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: default avatarMatthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: default avatarChristoph Hellwig <hch@lst.de>
parent 4aed23a2

mm/rmap.c

+5 −4
Original line number Diff line number Diff line
@@ -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

		}