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[46.250.226.198]) by smtp.gmail.com with ESMTPSA id 41be03b00d2f7-b678ddfeb7fsm14605348a12.19.2025.10.15.02.13.40 (version=TLS1_2 cipher=ECDHE-ECDSA-AES128-GCM-SHA256 bits=128/128); Wed, 15 Oct 2025 02:13:46 -0700 (PDT) From: wang lian Message-Id: Content-Type: multipart/alternative; boundary="Apple-Mail=_8D79A411-92B4-4AD9-A37D-B91414B775F5" Mime-Version: 1.0 (Mac OS X Mail 16.0 \(3864.100.1.1.5\)) Subject: Re: [PATCH] mm/khugepaged: fix comment for default scan sleep duration Date: Wed, 15 Oct 2025 17:13:27 +0800 In-Reply-To: Cc: Andrew Morton , Lorenzo Stoakes , Zi Yan , Baolin Wang , "Liam R. Howlett" , Nico Pache , Ryan Roberts , Dev Jain , Barry Song , Lance Yang , Andrea Arcangeli , Rik van Riel , Wei Yang , linux-mm@kvack.org, linux-kernel@vger.kernel.org To: David Hildenbrand References: <20251015064333.31274-1-lianux.mm@gmail.com> X-Mailer: Apple Mail (2.3864.100.1.1.5) X-Stat-Signature: jinck97iiizmki9b65x7hyzssoyp9djz X-Rspamd-Queue-Id: DDFD9C000C X-Rspamd-Server: rspam06 X-Rspam-User: X-HE-Tag: 1760519627-133894 X-HE-Meta: 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 LXn0ztcd 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 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: --Apple-Mail=_8D79A411-92B4-4AD9-A37D-B91414B775F5 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=us-ascii Hi David, Thanks for the great suggestions!=20 That indeed makes the comment much better. I will send out a v2 shortly. > On Oct 15, 2025, at 17:08, David Hildenbrand wrote: >=20 > We should improve the 512 part while at it (e.g., on arm64 with 64k = page size it's 2048, on s390x it's 256). >=20 > And s/pte/ptes/. >=20 > /* default scan 8*HPAGE_PMD_NR ptes (or vmas) every 10 second */ Best Regards, Wang Lian= --Apple-Mail=_8D79A411-92B4-4AD9-A37D-B91414B775F5 Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset=us-ascii
Hi David,
Thanks for the = great suggestions! 
That indeed makes the comment much = better.
I will send out a v2 = shortly.

On Oct 15, 2025, = at 17:08, David Hildenbrand <david@redhat.com> wrote:

We = should improve the 512 part while at it (e.g., on arm64 with 64k page = size it's 2048, on s390x it's 256).

And = s/pte/ptes/.

/* default scan = 8*HPAGE_PMD_NR ptes (or vmas) every 10 second = */

Best = Regards,
Wang Lian
= --Apple-Mail=_8D79A411-92B4-4AD9-A37D-B91414B775F5--