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From: Kefeng Wang <wangkefeng.wang@huawei.com>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: <linux-mm@kvack.org>, David Hildenbrand <david@kernel.org>,
	"Liam R . Howlett" <liam@infradead.org>,
	Lorenzo Stoakes <ljs@kernel.org>,
	Vlastimil Babka <vbabka@kernel.org>, Jann Horn <jannh@google.com>,
	Pedro Falcato <pfalcato@suse.de>, Zi Yan <ziy@nvidia.com>,
	Kefeng Wang <wangkefeng.wang@huawei.com>
Subject: [PATCH v3-fixup 5/6] mm: mincore: fixup improve mincore_hugetlb()
Date: Mon, 20 Jul 2026 20:42:52 +0800	[thread overview]
Message-ID: <20260720124252.1483984-1-wangkefeng.wang@huawei.com> (raw)
In-Reply-To: <20260717091347.1144789-6-wangkefeng.wang@huawei.com>

- change unsigned long nr to const
- remove a local vec variable

Signed-off-by: Kefeng Wang <wangkefeng.wang@huawei.com>
---
 mm/mincore.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/mm/mincore.c b/mm/mincore.c
index 9ea81638d09f..ff4ac8281768 100644
--- a/mm/mincore.c
+++ b/mm/mincore.c
@@ -28,8 +28,7 @@ static int mincore_hugetlb(pte_t *pte, unsigned long hmask, unsigned long addr,
 			unsigned long end, struct mm_walk *walk)
 {
 #ifdef CONFIG_HUGETLB_PAGE
-	unsigned long nr = (end - addr) >> PAGE_SHIFT;
-	unsigned char *vec = walk->private;
+	const unsigned long nr = (end - addr) >> PAGE_SHIFT;
 	unsigned char resident;
 	spinlock_t *ptl;
 	pte_t ptep;
@@ -37,7 +36,7 @@ static int mincore_hugetlb(pte_t *pte, unsigned long hmask, unsigned long addr,
 	ptl = huge_pte_lock(hstate_vma(walk->vma), walk->mm, pte);
 	ptep = huge_ptep_get(walk->mm, addr, pte);
 	resident = !huge_pte_none(ptep) && !pte_is_marker(ptep);
-	memset(vec, resident, nr);
+	memset(walk->private, resident, nr);
 	walk->private += nr;
 	spin_unlock(ptl);
 #else
-- 
2.55.0



  parent reply	other threads:[~2026-07-20 12:43 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <20260717091347.1144789-1-wangkefeng.wang@huawei.com>
     [not found] ` <20260717091347.1144789-2-wangkefeng.wang@huawei.com>
2026-07-20  9:21   ` [PATCH v3 1/6] mm: introduce pud_is_huge() helper David Hildenbrand (Arm)
     [not found] ` <20260717091347.1144789-6-wangkefeng.wang@huawei.com>
2026-07-20  9:27   ` [PATCH v3 5/6] mm: mincore: improve mincore_hugetlb() David Hildenbrand (Arm)
2026-07-20 12:42   ` Kefeng Wang [this message]
     [not found] ` <20260717091347.1144789-3-wangkefeng.wang@huawei.com>
2026-07-20  9:25   ` [PATCH v3 2/6] mm: mincore: remove special handling for VM_PFNMAP David Hildenbrand (Arm)
2026-07-20  9:26   ` David Hildenbrand (Arm)
2026-07-20 12:41   ` [PATCH v3-fixup 2/6] mm: mincore: fixup for " Kefeng Wang

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