linux-kernel - Re: [PATCH 7/7] mm: lru_add_drain_all() do local lru_add

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Message-ID: <1177bac9-2dd9-4401-b168-2ccae850cadd@redhat.com>
Date: Mon, 1 Sep 2025 10:14:23 +0200
From: David Hildenbrand <david@...hat.com>
To: Hugh Dickins <hughd@...gle.com>, Andrew Morton <akpm@...ux-foundation.org>
Cc: Will Deacon <will@...nel.org>, Shivank Garg <shivankg@....com>,
 Matthew Wilcox <willy@...radead.org>, Christoph Hellwig <hch@...radead.org>,
 Keir Fraser <keirf@...gle.com>, Jason Gunthorpe <jgg@...pe.ca>,
 John Hubbard <jhubbard@...dia.com>, Frederick Mayle <fmayle@...gle.com>,
 Peter Xu <peterx@...hat.com>, "Aneesh Kumar K.V" <aneesh.kumar@...nel.org>,
 Johannes Weiner <hannes@...xchg.org>, Vlastimil Babka <vbabka@...e.cz>,
 Alexander Krabler <Alexander.Krabler@...a.com>, Ge Yang
 <yangge1116@....com>, Li Zhe <lizhe.67@...edance.com>,
 Chris Li <chrisl@...nel.org>, Yu Zhao <yuzhao@...gle.com>,
 Axel Rasmussen <axelrasmussen@...gle.com>, Yuanchu Xie <yuanchu@...gle.com>,
 Wei Xu <weixugc@...gle.com>, Konstantin Khlebnikov <koct9i@...il.com>,
 linux-kernel@...r.kernel.org, linux-mm@...ck.org
Subject: Re: [PATCH 7/7] mm: lru_add_drain_all() do local lru_add_drain()
 first

On 31.08.25 11:18, Hugh Dickins wrote:
> No numbers to back this up, but it seemed obvious to me, that if there
> are competing lru_add_drain_all()ers, the work will be minimized if each
> flushes its own local queues before locking and doing cross-CPU drains.
> 

Sounds reasonable

Acked-by: David Hildenbrand <david@...hat.com>

-- 
Cheers

David / dhildenb