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b=FFsQ98ufdK7XNH0VXAxYnS/2/McRZ4h0wDDdDWPO0pa72TSYx/+57Rs+e9egFoifM TCKK91K6OxyTUH/S9dIcv3wrrqEAW3j5/sTYFj1uJ5IeHiz59QscPjsZdlNK4ArSSd Moe/4mchfcIFTGOtDtdZTZF+43yxyvz7FO3ALTSE= Date: Wed, 17 Dec 2025 12:26:02 -0800 From: Andrew Morton To: Ankur Arora Cc: linux-kernel@vger.kernel.org, linux-mm@kvack.org, x86@kernel.org, david@kernel.org, bp@alien8.de, dave.hansen@linux.intel.com, hpa@zytor.com, mingo@redhat.com, mjguzik@gmail.com, luto@kernel.org, peterz@infradead.org, tglx@linutronix.de, willy@infradead.org, raghavendra.kt@amd.com, chleroy@kernel.org, ioworker0@gmail.com, boris.ostrovsky@oracle.com, konrad.wilk@oracle.com Subject: Re: [PATCH v10 7/8] mm, folio_zero_user: support clearing page ranges Message-Id: <20251217122602.ecf88868aa473ff1d4905a7d@linux-foundation.org> In-Reply-To: <87345851kg.fsf@oracle.com> References: <20251215204922.475324-1-ankur.a.arora@oracle.com> <20251215204922.475324-8-ankur.a.arora@oracle.com> <20251215184413.19589400a74c2aadb42a2eca@linux-foundation.org> <874ipqexai.fsf@oracle.com> <20251216071250.e49ecf7490acf7f377dbfdc0@linux-foundation.org> <87fr994hot.fsf@oracle.com> <20251217105426.5f03b5e8abd2e50faee9f49f@linux-foundation.org> <87345851kg.fsf@oracle.com> X-Mailer: Sylpheed 3.7.0 (GTK+ 2.24.33; x86_64-pc-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-Stat-Signature: rhmxgdoboo5cczkim597hiynun8cdkqh X-Rspam-User: X-Rspamd-Server: rspam07 X-Rspamd-Queue-Id: 930F21A0015 X-HE-Tag: 1766003165-941178 X-HE-Meta: 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 kO309eeI D2NHs1wQgw3twZhkVV3x38rwZhT90Cjp+laZ8Aq3sodhyUu8/Y58LdUsdpOT9u7Ps6y/0ha1D8tVJbqZgaHLXyutnR5WIzEG6j98/rUVYvIzYI7BDafgKVCZiseOpeZ5mQ8lTuT8DKPB3gJ6h3kPR6XUeUFUHefEIy513yxIF9utXWJrpTnm7v18FD2pGWCGsQbb/k1GvXtuRpvpuWdjl/FczyAoVx+XzCdrPA5PMeX/xcOgWgH9GSaFow4h1o12n8QhCPI5arHBXhv6WHQiqXJiAhwZOcyBgP1D1 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 Wed, 17 Dec 2025 11:51:43 -0800 Ankur Arora wrote: > > If so, what's the timing on that? It would be nice to do it in the > > current -rc cycle for testing reasons and so the changelogs can be > > updated to reflect the altered performance numbers. > > I can send out an updated version of this patch later today. I think the > only real change is updating the constant and perf stats motivating > the chunk size value of 32MB. Yep. A tiny change wouldn't normally require a full resend, but fairly widespread changelog updates would best be handled with a v11, please. > Anything else you also think needs doing for this? Nope. Just lots of review, as always ;) What's the story with architectures other that x86, btw?