linux-kernel - [PATCH v1 2/3] mm/gup: convert to arch_make_folio

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Message-ID: <20240729183844.388481-3-david@redhat.com>
Date: Mon, 29 Jul 2024 20:38:43 +0200
From: David Hildenbrand <david@...hat.com>
To: linux-kernel@...r.kernel.org
Cc: linux-mm@...ck.org,
	linux-s390@...r.kernel.org,
	kvm@...r.kernel.org,
	David Hildenbrand <david@...hat.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Matthew Wilcox <willy@...radead.org>,
	Heiko Carstens <hca@...ux.ibm.com>,
	Vasily Gorbik <gor@...ux.ibm.com>,
	Alexander Gordeev <agordeev@...ux.ibm.com>,
	Christian Borntraeger <borntraeger@...ux.ibm.com>,
	Sven Schnelle <svens@...ux.ibm.com>,
	Janosch Frank <frankja@...ux.ibm.com>,
	Claudio Imbrenda <imbrenda@...ux.ibm.com>
Subject: [PATCH v1 2/3] mm/gup: convert to arch_make_folio_accessible()

Let's use arch_make_folio_accessible() instead so we can get rid of
arch_make_page_accessible().

Signed-off-by: David Hildenbrand <david@...hat.com>
---
 mm/gup.c | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/mm/gup.c b/mm/gup.c
index 120740cf5a348..3e8484c893aa8 100644
--- a/mm/gup.c
+++ b/mm/gup.c
@@ -819,6 +819,7 @@ static struct page *follow_page_pte(struct vm_area_struct *vma,
 		struct dev_pagemap **pgmap)
 {
 	struct mm_struct *mm = vma->vm_mm;
+	struct folio *folio;
 	struct page *page;
 	spinlock_t *ptl;
 	pte_t *ptep, pte;
@@ -876,6 +877,7 @@ static struct page *follow_page_pte(struct vm_area_struct *vma,
 			goto out;
 		}
 	}
+	folio = page_folio(page);
 
 	if (!pte_write(pte) && gup_must_unshare(vma, flags, page)) {
 		page = ERR_PTR(-EMLINK);
@@ -886,7 +888,7 @@ static struct page *follow_page_pte(struct vm_area_struct *vma,
 		       !PageAnonExclusive(page), page);
 
 	/* try_grab_folio() does nothing unless FOLL_GET or FOLL_PIN is set. */
-	ret = try_grab_folio(page_folio(page), 1, flags);
+	ret = try_grab_folio(folio, 1, flags);
 	if (unlikely(ret)) {
 		page = ERR_PTR(ret);
 		goto out;
@@ -898,7 +900,7 @@ static struct page *follow_page_pte(struct vm_area_struct *vma,
 	 * Documentation/core-api/pin_user_pages.rst for details.
 	 */
 	if (flags & FOLL_PIN) {
-		ret = arch_make_page_accessible(page);
+		ret = arch_make_folio_accessible(folio);
 		if (ret) {
 			unpin_user_page(page);
 			page = ERR_PTR(ret);
@@ -2919,7 +2921,7 @@ static int gup_fast_pte_range(pmd_t pmd, pmd_t *pmdp, unsigned long addr,
 		 * details.
 		 */
 		if (flags & FOLL_PIN) {
-			ret = arch_make_page_accessible(page);
+			ret = arch_make_folio_accessible(folio);
 			if (ret) {
 				gup_put_folio(folio, 1, flags);
 				goto pte_unmap;
-- 
2.45.2