linux-kernel - [PATCH -next] mm: madvise: use vm_normal_folio() in madvise_free_pte

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-next>] [day] [month] [year] [list]

Date:   Thu, 12 Jan 2023 20:40:28 +0800
From:   Kefeng Wang <wangkefeng.wang@...wei.com>
To:     Andrew Morton <akpm@...ux-foundation.org>, <linux-mm@...ck.org>
CC:     <linux-kernel@...r.kernel.org>, <willy@...radead.org>,
        <vishal.moola@...il.com>, Kefeng Wang <wangkefeng.wang@...wei.com>
Subject: [PATCH -next] mm: madvise: use vm_normal_folio() in madvise_free_pte_range()

There is already a vm_normal_folio(), use it to make
madvise_free_pte_range() only use a folio.

Signed-off-by: Kefeng Wang <wangkefeng.wang@...wei.com>
---
 mm/madvise.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/mm/madvise.c b/mm/madvise.c
index 4561aaa0e46c..7931d2649de1 100644
--- a/mm/madvise.c
+++ b/mm/madvise.c
@@ -614,7 +614,6 @@ static int madvise_free_pte_range(pmd_t *pmd, unsigned long addr,
 	spinlock_t *ptl;
 	pte_t *orig_pte, *pte, ptent;
 	struct folio *folio;
-	struct page *page;
 	int nr_swap = 0;
 	unsigned long next;
 
@@ -655,10 +654,9 @@ static int madvise_free_pte_range(pmd_t *pmd, unsigned long addr,
 			continue;
 		}
 
-		page = vm_normal_page(vma, addr, ptent);
-		if (!page || is_zone_device_page(page))
+		folio = vm_normal_folio(vma, addr, ptent);
+		if (!folio || folio_is_zone_device(folio))
 			continue;
-		folio = page_folio(page);
 
 		/*
 		 * If pmd isn't transhuge but the folio is large and
-- 
2.35.3