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Tue, 14 Oct 2025 13:28:29 -0700 (PDT) MIME-Version: 1.0 References: <20251013101636.69220-1-21cnbao@gmail.com> In-Reply-To: From: Barry Song <21cnbao@gmail.com> Date: Wed, 15 Oct 2025 04:28:17 +0800 X-Gm-Features: AS18NWCDtdWGykNnr10kVKpaN-UFlp7dIYD7B4uot-LSzZLpylUZVkd3ymutVWU Message-ID: Subject: Re: [RFC PATCH] mm: net: disable kswapd for high-order network buffer allocation To: Shakeel Butt Cc: Eric Dumazet , Matthew Wilcox , netdev@vger.kernel.org, linux-mm@kvack.org, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, Barry Song , Jonathan Corbet , Kuniyuki Iwashima , Paolo Abeni , Willem de Bruijn , "David S. Miller" , Jakub Kicinski , Simon Horman , Vlastimil Babka , Suren Baghdasaryan , Michal Hocko , Brendan Jackman , Johannes Weiner , Zi Yan , Yunsheng Lin , Huacai Zhou Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Rspamd-Server: rspam10 X-Rspamd-Queue-Id: A193920015 X-Stat-Signature: g7fik3qzjzs5okin88d4pma8hhotetf5 X-Rspam-User: X-HE-Tag: 1760473710-62238 X-HE-Meta: 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 RvDfINNk AZl3gZkBQnsIOd6o9xG+IgfQ69hCeOyu4RhNzz4C3HEkyuQQZZAwta6NdUyAIPlyUccFYR2vKCUex7QkdmrT/xIu0CxF26+ARicx0Jk9VsoI5lFzsTVeI5SMjSX0acyr0EbC9GHtyFYmQx3LyYLWWKfAZGTBDmpwmwQg47KaxEENRaoxq01JBqu2cqdfhQehKN6nN/CYxL26FFo0vYuVJciNlhTMe3Se/j6nhKgQCOfXygNn+H9cJQRrB7j+YOoo+ZBmdjMR9MBljbPXX95OX7i8Omj2zdVb+MpuRZt8VocEqj/G1JpwDLtVMv3mxQzH0JFQYV6r57SPg+KU9bCqA1g0CY+NjDSQPJcUUI0EIwrpeZ2/OqloNlHJqZSS3qaWbZk62 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On Tue, Oct 14, 2025 at 10:38=E2=80=AFPM Shakeel Butt wrote: > > > > It might be worth exploring these settings further, but I can=E2=80=99t= quite see > > their connection to high-order allocations, > > I don't think there is a connection between them. Is there a reason you > are expecting a connection/relation between them? Eric replied to my email about frequent high-order allocation requests, suggesting that I might be missing some proper configurations for these settings[1]. So I=E2=80=99m trying to understand whether these configuratio= ns affect the frequency of high-order allocations. [1] https://lore.kernel.org/linux-mm/pow5zt7dmo2wiydophoap6ntaycyjt2yrszo3u= e7mg2hgnzcmv@oi3epbtyoufn/T/#m9b94a1c60452551496738e4e15235329f860d1f9 Thanks Barry