From f2d571b0b207087442d1c3fca5189ee1cb34648e Mon Sep 17 00:00:00 2001 From: "Matthew Wilcox (Oracle)" Date: Thu, 11 Jan 2024 15:24:22 +0000 Subject: [PATCH] mprotect: use pfn_swap_entry_folio We only want to know whether the folio is anonymous, so use pfn_swap_entry_folio() and save a call to compound_head(). Link: https://lkml.kernel.org/r/20240111152429.3374566-4-willy@infradead.org Signed-off-by: Matthew Wilcox (Oracle) Cc: David Hildenbrand Cc: Kefeng Wang Signed-off-by: Andrew Morton --- mm/mprotect.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/mm/mprotect.c b/mm/mprotect.c index 81991102f785..f8a4544b4601 100644 --- a/mm/mprotect.c +++ b/mm/mprotect.c @@ -198,13 +198,13 @@ static long change_pte_range(struct mmu_gather *tlb, pte_t newpte; if (is_writable_migration_entry(entry)) { - struct page *page = pfn_swap_entry_to_page(entry); + struct folio *folio = pfn_swap_entry_folio(entry); /* * A protection check is difficult so * just be safe and disable write */ - if (PageAnon(page)) + if (folio_test_anon(folio)) entry = make_readable_exclusive_migration_entry( swp_offset(entry)); else -- 2.20.1