linux-kernel - [PATCH 1/3] mm/hugetlb: Refactor unmap_ref_private() to take folio instead of page

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: Windows password security audit tool. GUI, reports in PDF.

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

Message-ID: <20250417155530.124073-1-nifan.cxl@gmail.com>
Date: Thu, 17 Apr 2025 08:43:13 -0700
From: nifan.cxl@...il.com
To: muchun.song@...ux.dev,
	willy@...radead.org
Cc: mcgrof@...nel.org,
	a.manzanares@...sung.com,
	dave@...olabs.net,
	akpm@...ux-foundation.org,
	david@...hat.com,
	linux-mm@...ck.org,
	linux-kernel@...r.kernel.org,
	Fan Ni <fan.ni@...sung.com>
Subject: [PATCH 1/3] mm/hugetlb: Refactor unmap_ref_private() to take folio instead of page

From: Fan Ni <fan.ni@...sung.com>

The function unmap_ref_private() has only user, which passes in
&folio->page. Let it take folio directly.

Signed-off-by: Fan Ni <fan.ni@...sung.com>
---
 mm/hugetlb.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/mm/hugetlb.c b/mm/hugetlb.c
index ccc4f08f8481..b5d1ac8290a7 100644
--- a/mm/hugetlb.c
+++ b/mm/hugetlb.c
@@ -6064,7 +6064,7 @@ void unmap_hugepage_range(struct vm_area_struct *vma, unsigned long start,
  * same region.
  */
 static void unmap_ref_private(struct mm_struct *mm, struct vm_area_struct *vma,
-			      struct page *page, unsigned long address)
+			      struct folio *folio, unsigned long address)
 {
 	struct hstate *h = hstate_vma(vma);
 	struct vm_area_struct *iter_vma;
@@ -6108,7 +6108,8 @@ static void unmap_ref_private(struct mm_struct *mm, struct vm_area_struct *vma,
 		 */
 		if (!is_vma_resv_set(iter_vma, HPAGE_RESV_OWNER))
 			unmap_hugepage_range(iter_vma, address,
-					     address + huge_page_size(h), page, 0);
+					     address + huge_page_size(h),
+					     folio_page(folio, 0), 0);
 	}
 	i_mmap_unlock_write(mapping);
 }
@@ -6231,8 +6232,7 @@ static vm_fault_t hugetlb_wp(struct folio *pagecache_folio,
 			hugetlb_vma_unlock_read(vma);
 			mutex_unlock(&hugetlb_fault_mutex_table[hash]);
 
-			unmap_ref_private(mm, vma, &old_folio->page,
-					vmf->address);
+			unmap_ref_private(mm, vma, old_folio, vmf->address);
 
 			mutex_lock(&hugetlb_fault_mutex_table[hash]);
 			hugetlb_vma_lock_read(vma);
-- 
2.47.2