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From: "David Hildenbrand (Arm)" <david@kernel.org>
To: linux-kernel@vger.kernel.org
Cc: "linux-mm @ kvack . org" <linux-mm@kvack.org>,
	"David Hildenbrand (Arm)" <david@kernel.org>,
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Subject: [PATCH v1 05/16] mm/oom_kill: use MMU_NOTIFY_CLEAR in __oom_reap_task_mm()
Date: Fri, 27 Feb 2026 21:08:36 +0100	[thread overview]
Message-ID: <20260227200848.114019-6-david@kernel.org> (raw)
In-Reply-To: <20260227200848.114019-1-david@kernel.org>

In commit 7269f999934b ("mm/mmu_notifier: use correct mmu_notifier events
for each invalidation") we converted all MMU_NOTIFY_UNMAP to
MMU_NOTIFY_CLEAR, except the ones that actually perform munmap() or
mremap() as documented.

__oom_reap_task_mm() behaves much more like MADV_DONTNEED. So use
MMU_NOTIFY_CLEAR as well.

This is a preparation for further changes.

Signed-off-by: David Hildenbrand (Arm) <david@kernel.org>
---
 mm/oom_kill.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/mm/oom_kill.c b/mm/oom_kill.c
index 5c6c95c169ee..0ba56fcd10d5 100644
--- a/mm/oom_kill.c
+++ b/mm/oom_kill.c
@@ -551,7 +551,7 @@ static bool __oom_reap_task_mm(struct mm_struct *mm)
 			struct mmu_notifier_range range;
 			struct mmu_gather tlb;
 
-			mmu_notifier_range_init(&range, MMU_NOTIFY_UNMAP, 0,
+			mmu_notifier_range_init(&range, MMU_NOTIFY_CLEAR, 0,
 						mm, vma->vm_start,
 						vma->vm_end);
 			tlb_gather_mmu(&tlb, mm);
-- 
2.43.0



  parent reply	other threads:[~2026-02-27 20:10 UTC|newest]

Thread overview: 17+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-02-27 20:08 [PATCH v1 00/16] mm: cleanups around unmapping / zapping David Hildenbrand (Arm)
2026-02-27 20:08 ` [PATCH v1 01/16] mm/madvise: drop range checks in madvise_free_single_vma() David Hildenbrand (Arm)
2026-02-27 20:08 ` [PATCH v1 02/16] mm/memory: remove "zap_details" parameter from zap_page_range_single() David Hildenbrand (Arm)
2026-02-27 20:08 ` [PATCH v1 03/16] mm/memory: inline unmap_mapping_range_vma() into unmap_mapping_range_tree() David Hildenbrand (Arm)
2026-02-27 20:08 ` [PATCH v1 04/16] mm/memory: simplify calculation in unmap_mapping_range_tree() David Hildenbrand (Arm)
2026-02-27 20:08 ` David Hildenbrand (Arm) [this message]
2026-02-27 20:08 ` [PATCH v1 06/16] mm/oom_kill: factor out zapping of VMA into zap_vma_for_reaping() David Hildenbrand (Arm)
2026-02-27 20:08 ` [PATCH v1 07/16] mm/memory: rename unmap_single_vma() to __zap_vma_range() David Hildenbrand (Arm)
2026-02-27 20:08 ` [PATCH v1 08/16] mm/memory: move adjusting of address range to unmap_vmas() David Hildenbrand (Arm)
2026-02-27 20:08 ` [PATCH v1 09/16] mm/memory: convert details->even_cows into details->skip_cows David Hildenbrand (Arm)
2026-02-27 20:08 ` [PATCH v1 10/16] mm/memory: use __zap_vma_range() in zap_vma_for_reaping() David Hildenbrand (Arm)
2026-02-27 20:08 ` [PATCH v1 11/16] mm/memory: inline unmap_page_range() into __zap_vma_range() David Hildenbrand (Arm)
2026-02-27 20:08 ` [PATCH v1 12/16] mm: rename zap_vma_pages() to zap_vma() David Hildenbrand (Arm)
2026-02-27 20:08 ` [PATCH v1 13/16] mm: rename zap_page_range_single_batched() to zap_vma_range_batched() David Hildenbrand (Arm)
2026-02-27 20:08 ` [PATCH v1 14/16] mm: rename zap_page_range_single() to zap_vma_range() David Hildenbrand (Arm)
2026-02-27 20:08 ` [PATCH v1 15/16] mm: rename zap_vma_ptes() to zap_special_vma_range() David Hildenbrand (Arm)
2026-02-27 20:08 ` [PATCH v1 16/16] mm/memory: support VM_MIXEDMAP in zap_special_vma_range() David Hildenbrand (Arm)

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