From: Wei Yang <richard.weiyang@gmail.com>
To: akpm@linux-foundation.org, david@kernel.org,
lorenzo.stoakes@oracle.com, ziy@nvidia.com,
baolin.wang@linux.alibaba.com, Liam.Howlett@oracle.com,
npache@redhat.com, ryan.roberts@arm.com, dev.jain@arm.com,
baohua@kernel.org, lance.yang@linux.dev
Cc: linux-mm@kvack.org, Wei Yang <richard.weiyang@gmail.com>
Subject: [PATCH] mm/khugepaged: continue to collapse on SCAN_PMD_NONE
Date: Wed, 12 Nov 2025 02:00:31 +0000 [thread overview]
Message-ID: <20251112020031.25350-1-richard.weiyang@gmail.com> (raw)
SCAN_PMD_NONE means current pmd is empty, but we can still continue
collapse next pmd range.
Signed-off-by: Wei Yang <richard.weiyang@gmail.com>
---
mm/khugepaged.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/mm/khugepaged.c b/mm/khugepaged.c
index 7e8cb181d5bd..4c2217076ad3 100644
--- a/mm/khugepaged.c
+++ b/mm/khugepaged.c
@@ -2835,6 +2835,7 @@ int madvise_collapse(struct vm_area_struct *vma, unsigned long start,
goto handle_result;
/* Whitelisted set of results where continuing OK */
case SCAN_PMD_NULL:
+ case SCAN_PMD_NONE:
case SCAN_PTE_NON_PRESENT:
case SCAN_PTE_UFFD_WP:
case SCAN_LACK_REFERENCED_PAGE:
--
2.34.1
next reply other threads:[~2025-11-12 2:00 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-11-12 2:00 Wei Yang [this message]
2025-11-12 2:37 ` Lance Yang
2025-11-12 3:40 ` Wei Yang
2025-11-12 3:58 ` Dev Jain
2025-11-12 9:10 ` Wei Yang
2025-11-12 3:33 ` Dev Jain
2025-11-12 9:51 ` David Hildenbrand (Red Hat)
2025-11-12 9:51 ` David Hildenbrand (Red Hat)
2025-11-12 11:27 ` Wei Yang
2025-11-12 11:41 ` David Hildenbrand (Red Hat)
2025-11-13 2:44 ` Baolin Wang
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