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Tue, 13 Dec 2022 00:25:51 +0000 Received: from BY5PR10MB4196.namprd10.prod.outlook.com ([fe80::8d67:8c42:d124:3721]) by BY5PR10MB4196.namprd10.prod.outlook.com ([fe80::8d67:8c42:d124:3721%5]) with mapi id 15.20.5880.019; Tue, 13 Dec 2022 00:25:51 +0000 Date: Mon, 12 Dec 2022 16:25:48 -0800 From: Mike Kravetz To: James Houghton Cc: Muchun Song , Peter Xu , David Hildenbrand , David Rientjes , Axel Rasmussen , Mina Almasry , Zach O'Keefe , Manish Mishra , Naoya Horiguchi , "Dr . David Alan Gilbert" , "Matthew Wilcox (Oracle)" , Vlastimil Babka , Baolin Wang , Miaohe Lin , Yang Shi , Andrew Morton , linux-mm@kvack.org, linux-kernel@vger.kernel.org Subject: Re: [RFC PATCH v2 09/47] hugetlb: make huge_pte_lockptr take an explicit shift argument. 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We > won't always be using the PMD-level PTL even if we're using the 2M > hugepage hstate. It's possible that we're dealing with 4K PTEs, in which > case, we need to lock the PTL for the 4K PTE. > > Signed-off-by: James Houghton > --- > arch/powerpc/mm/pgtable.c | 3 ++- > include/linux/hugetlb.h | 9 ++++----- > mm/hugetlb.c | 7 ++++--- > mm/migrate.c | 3 ++- > 4 files changed, 12 insertions(+), 10 deletions(-) Straight forward substitution, Acked-by: Mike Kravetz -- Mike Kravetz