linux-kernel - [RFC PATCH v1 2/4] mm: also set VMA in khugepaged range invalidation

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Message-ID: <DB7PR02MB3979E79A7ADF7E7B2F397418BB5A0@DB7PR02MB3979.eurprd02.prod.outlook.com>
Date:   Wed, 11 Dec 2019 09:29:21 +0000
From:   Mircea CIRJALIU - MELIU <mcirjaliu@...defender.com>
To:     "linux-mm@...ck.org" <linux-mm@...ck.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Jerome Glisse <jglisse@...hat.com>,
        Paolo Bonzini <pbonzini@...hat.com>,
        "aarcange@...hat.com" <aarcange@...hat.com>
Subject: [RFC PATCH v1 2/4] mm: also set VMA in khugepaged range invalidation

MMU notifier client may need the VMA for extra info.
This change is needed by the remote mapping feature that inspects anon VMAs
with huge mappings. 

Signed-off-by: Mircea Cirjaliu <mcirjaliu@...defender.com>
---
 mm/khugepaged.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/mm/khugepaged.c b/mm/khugepaged.c
index b679908..11c65f3 100644
--- a/mm/khugepaged.c
+++ b/mm/khugepaged.c
@@ -1028,7 +1028,7 @@ static void collapse_huge_page(struct mm_struct *mm,
 
 	anon_vma_lock_write(vma->anon_vma);
 
-	mmu_notifier_range_init(&range, MMU_NOTIFY_CLEAR, 0, NULL, mm,
+	mmu_notifier_range_init(&range, MMU_NOTIFY_CLEAR, 0, vma, mm,
 				address, address + HPAGE_PMD_SIZE);
 	mmu_notifier_invalidate_range_start(&range);