linux-kernel - [PATCH v1 20/39] mm/memory: page_add_anon_rmap() -> folio_add_anon_rmap

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20231211155652.131054-21-david@redhat.com>
Date:   Mon, 11 Dec 2023 16:56:33 +0100
From:   David Hildenbrand <david@...hat.com>
To:     linux-kernel@...r.kernel.org
Cc:     linux-mm@...ck.org, David Hildenbrand <david@...hat.com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        "Matthew Wilcox (Oracle)" <willy@...radead.org>,
        Hugh Dickins <hughd@...gle.com>,
        Ryan Roberts <ryan.roberts@....com>,
        Yin Fengwei <fengwei.yin@...el.com>,
        Mike Kravetz <mike.kravetz@...cle.com>,
        Muchun Song <muchun.song@...ux.dev>,
        Peter Xu <peterx@...hat.com>
Subject: [PATCH v1 20/39] mm/memory: page_add_anon_rmap() -> folio_add_anon_rmap_pte()

Let's convert restore_exclusive_pte() and do_swap_page(). While at it,
perform some folio conversion in restore_exclusive_pte().

Signed-off-by: David Hildenbrand <david@...hat.com>
---
 mm/memory.c | 11 +++++++----
 1 file changed, 7 insertions(+), 4 deletions(-)

diff --git a/mm/memory.c b/mm/memory.c
index 70754fd65788..97e064883992 100644
--- a/mm/memory.c
+++ b/mm/memory.c
@@ -710,6 +710,7 @@ static void restore_exclusive_pte(struct vm_area_struct *vma,
 				  struct page *page, unsigned long address,
 				  pte_t *ptep)
 {
+	struct folio *folio = page_folio(page);
 	pte_t orig_pte;
 	pte_t pte;
 	swp_entry_t entry;
@@ -725,14 +726,15 @@ static void restore_exclusive_pte(struct vm_area_struct *vma,
 	else if (is_writable_device_exclusive_entry(entry))
 		pte = maybe_mkwrite(pte_mkdirty(pte), vma);
 
-	VM_BUG_ON(pte_write(pte) && !(PageAnon(page) && PageAnonExclusive(page)));
+	VM_BUG_ON_FOLIO(pte_write(pte) && (!folio_test_anon(folio) &&
+					   PageAnonExclusive(page)), folio);
 
 	/*
 	 * No need to take a page reference as one was already
 	 * created when the swap entry was made.
 	 */
-	if (PageAnon(page))
-		page_add_anon_rmap(page, vma, address, RMAP_NONE);
+	if (folio_test_anon(folio))
+		folio_add_anon_rmap_pte(folio, page, vma, address, RMAP_NONE);
 	else
 		/*
 		 * Currently device exclusive access only supports anonymous
@@ -4073,7 +4075,8 @@ vm_fault_t do_swap_page(struct vm_fault *vmf)
 		page_add_new_anon_rmap(page, vma, vmf->address);
 		folio_add_lru_vma(folio, vma);
 	} else {
-		page_add_anon_rmap(page, vma, vmf->address, rmap_flags);
+		folio_add_anon_rmap_pte(folio, page, vma, vmf->address,
+					rmap_flags);
 	}
 
 	VM_BUG_ON(!folio_test_anon(folio) ||
-- 
2.43.0