Re: [PATCH v3 9/9] mm/huge_memory: remove stale locking logic from __split_huge_pmd()

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To: David Hildenbrand <david@xxxxxxxxxx>, linux-kernel@xxxxxxxxxxxxxxx
Subject: Re: [PATCH v3 9/9] mm/huge_memory: remove stale locking logic from __split_huge_pmd()
From: Vlastimil Babka <vbabka@xxxxxxx>
Date: Thu, 10 Mar 2022 12:02:45 +0100
Cc: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>, Hugh Dickins <hughd@xxxxxxxxxx>, Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>, David Rientjes <rientjes@xxxxxxxxxx>, Shakeel Butt <shakeelb@xxxxxxxxxx>, John Hubbard <jhubbard@xxxxxxxxxx>, Jason Gunthorpe <jgg@xxxxxxxxxx>, Mike Kravetz <mike.kravetz@xxxxxxxxxx>, Mike Rapoport <rppt@xxxxxxxxxxxxx>, Yang Shi <shy828301@xxxxxxxxx>, "Kirill A . Shutemov" <kirill.shutemov@xxxxxxxxxxxxxxx>, Matthew Wilcox <willy@xxxxxxxxxxxxx>, Jann Horn <jannh@xxxxxxxxxx>, Michal Hocko <mhocko@xxxxxxxxxx>, Nadav Amit <namit@xxxxxxxxxx>, Rik van Riel <riel@xxxxxxxxxxx>, Roman Gushchin <guro@xxxxxx>, Andrea Arcangeli <aarcange@xxxxxxxxxx>, Peter Xu <peterx@xxxxxxxxxx>, Donald Dutile <ddutile@xxxxxxxxxx>, Christoph Hellwig <hch@xxxxxx>, Oleg Nesterov <oleg@xxxxxxxxxx>, Jan Kara <jack@xxxxxxx>, Liang Zhang <zhangliang5@xxxxxxxxxx>, linux-mm@xxxxxxxxx
In-reply-to: <20220131162940.210846-10-david@redhat.com>
References: <20220131162940.210846-1-david@redhat.com> <20220131162940.210846-10-david@redhat.com>
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101 Thunderbird/91.6.2

On 1/31/22 17:29, David Hildenbrand wrote:
> Let's remove the stale logic that was required for reuse_swap_page().
> 
> Signed-off-by: David Hildenbrand <david@xxxxxxxxxx>

Acked-by: Vlastimil Babka <vbabka@xxxxxxx>

References:
- [PATCH v3 0/9] mm: COW fixes part 1: fix the COW security issue for THP and swap
  - From: David Hildenbrand
- [PATCH v3 9/9] mm/huge_memory: remove stale locking logic from __split_huge_pmd()
  - From: David Hildenbrand

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