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Wed, 28 Apr 2021 15:36:37 +0000 From: Liam Howlett To: "maple-tree@lists.infradead.org" , "linux-mm@kvack.org" , "linux-kernel@vger.kernel.org" , Andrew Morton CC: Song Liu , Davidlohr Bueso , "Paul E . McKenney" , Matthew Wilcox , Laurent Dufour , David Rientjes , Axel Rasmussen , Suren Baghdasaryan , Vlastimil Babka , Rik van Riel , Peter Zijlstra , Michel Lespinasse , Liam Howlett Subject: [PATCH 37/94] mm/khugepaged: Optimize collapse_pte_mapped_thp() by using vma_lookup() Thread-Topic: [PATCH 37/94] mm/khugepaged: Optimize collapse_pte_mapped_thp() by using vma_lookup() Thread-Index: AQHXPEQ1PymdabimTUu/A4Cg2b34EA== Date: Wed, 28 Apr 2021 15:36:07 +0000 Message-ID: <20210428153542.2814175-38-Liam.Howlett@Oracle.com> References: <20210428153542.2814175-1-Liam.Howlett@Oracle.com> In-Reply-To: <20210428153542.2814175-1-Liam.Howlett@Oracle.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-mailer: git-send-email 2.30.2 authentication-results: lists.infradead.org; dkim=none (message not signed) header.d=none;lists.infradead.org; dmarc=none action=none header.from=oracle.com; x-originating-ip: [23.233.25.87] x-ms-publictraffictype: Email x-ms-office365-filtering-correlation-id: cd91c41f-4868-4d87-ebb2-08d90a5b6989 x-ms-traffictypediagnostic: MWHPR10MB1982: x-ms-exchange-transport-forked: True x-microsoft-antispam-prvs: x-ms-oob-tlc-oobclassifiers: OLM:4941; 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Since the exact vma is checked below, this is a more optimal way of searching. Signed-off-by: Liam R. Howlett --- mm/khugepaged.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/mm/khugepaged.c b/mm/khugepaged.c index 6c0185fdd815..33cf91529f0b 100644 --- a/mm/khugepaged.c +++ b/mm/khugepaged.c @@ -1431,7 +1431,7 @@ static int khugepaged_add_pte_mapped_thp(struct mm_st= ruct *mm, void collapse_pte_mapped_thp(struct mm_struct *mm, unsigned long addr) { unsigned long haddr =3D addr & HPAGE_PMD_MASK; - struct vm_area_struct *vma =3D find_vma(mm, haddr); + struct vm_area_struct *vma =3D vma_lookup(mm, haddr); struct page *hpage; pte_t *start_pte, *pte; pmd_t *pmd, _pmd; --=20 2.30.2