From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by smtp.lore.kernel.org (Postfix) with ESMTP id 3AAEFC02181 for ; Wed, 22 Jan 2025 11:09:32 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 624216B0088; Wed, 22 Jan 2025 06:09:31 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id 5AD846B0089; Wed, 22 Jan 2025 06:09:31 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 426DC6B008A; Wed, 22 Jan 2025 06:09:31 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0011.hostedemail.com [216.40.44.11]) by kanga.kvack.org (Postfix) with ESMTP id 138F76B0088 for ; Wed, 22 Jan 2025 06:09:31 -0500 (EST) Received: from smtpin09.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay04.hostedemail.com (Postfix) with ESMTP id 960AA1A160D for ; Wed, 22 Jan 2025 11:09:30 +0000 (UTC) X-FDA: 83034816900.09.4537EBB Received: from mail-pj1-f49.google.com (mail-pj1-f49.google.com [209.85.216.49]) by imf25.hostedemail.com (Postfix) with ESMTP id BDA61A0011 for ; Wed, 22 Jan 2025 11:09:28 +0000 (UTC) Authentication-Results: imf25.hostedemail.com; dkim=pass header.d=google.com header.s=20230601 header.b=X0iM8wYr; spf=pass (imf25.hostedemail.com: domain of vny@google.com designates 209.85.216.49 as permitted sender) smtp.mailfrom=vny@google.com; dmarc=pass (policy=reject) header.from=google.com ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1737544168; h=from:from:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references:dkim-signature; bh=1oKe6eiwPp6HWWojJigP+JSgbL4961J82KB+mu/ruNE=; b=oXljKe4irnQH5eHPdvlCzRGor25THxvXI2D3ySx4HgkGJYGb9Gx0HHbT8VDq/NXljEQAxs neD+VpMfWwlW2eULXEuPxhq2NLDdcVCuyoxhbfBMzRKBYlUVB49pv9LP3Tg6mGpkNqU5uw upB3RjLmOus2O3oyoD9lWKjmwPvUh3s= ARC-Authentication-Results: i=1; imf25.hostedemail.com; dkim=pass header.d=google.com header.s=20230601 header.b=X0iM8wYr; spf=pass (imf25.hostedemail.com: domain of vny@google.com designates 209.85.216.49 as permitted sender) smtp.mailfrom=vny@google.com; dmarc=pass (policy=reject) header.from=google.com ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1737544168; a=rsa-sha256; cv=none; b=uUONHLL+xjVDerMK04NOPBx/L6HKA8n70F+br2nqI71gXFt5s50uoZc6eWoctRluafP/vR FES8lPyQDQ0pM92NtsrGUEJkGVbuQL9yZNZ0IjqZjgkx9Qb0hCv2l4P4YttSbJ05og4ofC 59q45VM0C6RsdH2aZjSEUHNKLeLnpw4= Received: by mail-pj1-f49.google.com with SMTP id 98e67ed59e1d1-2ee51f8c47dso9250021a91.1 for ; Wed, 22 Jan 2025 03:09:28 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1737544167; x=1738148967; darn=kvack.org; h=content-transfer-encoding:cc:to:subject:message-id:date:from :in-reply-to:references:mime-version:from:to:cc:subject:date :message-id:reply-to; bh=1oKe6eiwPp6HWWojJigP+JSgbL4961J82KB+mu/ruNE=; b=X0iM8wYrslGcxUmDWmmMhkKV+VXhmokrNJB1PUqYlRjlotxHDcZ5IruYC3CZDpgW+m Oj1waZlUg00XEh5Cy3QgZvBZV8lYZjAtJudM9f3ylA7lXkGolkvfSEZMfKc4vHA3YgJW 9g6VkhLWIPEi2DhWyWqoGguZ/eJKiu5odRlDJ8lra2+6WyV4bA6TV/Kfy7VC5Bj2xbMl QREPA03RqcZZqfUzs3+ZildTYyMU9lJ8hrU1tU0fl4fiaOP4F2g7jg5CmB5kC+MJK9rY SEEFNoFsfTMMABKxki03NpN9KKU0W0YOJIabOY/s6I6I6ZOFoLLZPqk36AwjBZEFN2Mp u1vA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1737544167; x=1738148967; h=content-transfer-encoding:cc:to:subject:message-id:date:from :in-reply-to:references:mime-version:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=1oKe6eiwPp6HWWojJigP+JSgbL4961J82KB+mu/ruNE=; b=GdFM4VZuufdHcvYY7eizHA8OjB77InuOQrjT28TkrGTP9WwwKgq9p7QZfPaSPiGsRq i4PMH2chorXTne8KtDYJ14mDsm5rTHPqgdX4YCAxONqGBl1yhB+A7PWp9FyEiOcP6q3A JDO39+OcwYx3tgLT1JMPeIXlHioe3W4sz+aQTi+/HxTD19G84kHtmsE0g3zyJS6D6jjY 6onyjmsp3k74wobLey/NAiUBkMnK7BVUIgGKtRufUMk5C/692gkGPe0rd4qpgcTuPXyy lUoZbe6bGqPFbgCWBkFJ4rrc+h3GfpXFMShWvmIis8CzAbM7q76GPq7g1XFjomRKOz0a p+vg== X-Gm-Message-State: AOJu0Yy5/XdS72PGJU/IXtydpwqA/nNh7//ZlNSMjlTqYX24iD01pOtI GReoVb61LGrgLVJfUNekqob3ZaZoeo+A6iojCT3SaSoKTOduYFTCIGYXj1lJHISCMRwkGU2VZWk yfilSlKeQuVps0RMeYoPZkSMrnVqCsNf2Urn4 X-Gm-Gg: ASbGncvk64MinOnmJM46NE5x35B3fi/D0BxDWwMJ5VMagTJLj3d/5AC3UpRRGwNi7nj HHGvaDz5o6JCcVeRi3VWDsSRbaBp3bAgr9FqIeQtSARgyF9JqsmA= X-Google-Smtp-Source: AGHT+IFfnDUFlMg6CDrOGk9nV52vhtekaTixaHkfuCqj+Gq70tn5MqbhOJq6WINGolha1x2pgRH+o9Q1A470xVDxR+8= X-Received: by 2002:a17:90b:2dc9:b0:2ea:7329:43 with SMTP id 98e67ed59e1d1-2f782c628e8mr28622495a91.6.1737544167297; Wed, 22 Jan 2025 03:09:27 -0800 (PST) MIME-Version: 1.0 References: <9e0fc33a-2e2b-4366-ae1b-231038dfd2be@amd.com> In-Reply-To: <9e0fc33a-2e2b-4366-ae1b-231038dfd2be@amd.com> From: Vinay Banakar Date: Wed, 22 Jan 2025 05:09:15 -0600 X-Gm-Features: AbW1kvazeLWmBD1gf3hlmVRV115SS6z0A8JmFQMSxivLkMbrIwqcQKm1jLrDjCs Message-ID: Subject: Re: [PATCH] mm: Optimize TLB flushes during page reclaim To: Bharata B Rao Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org, akpm@linux-foundation.org, willy@infradead.org, mgorman@suse.de, Wei Xu , Greg Thelen Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Rspamd-Server: rspam05 X-Rspamd-Queue-Id: BDA61A0011 X-Stat-Signature: h5y3piaymt3cgxsrq6zsrnk1yogr9nqz X-Rspam-User: X-HE-Tag: 1737544168-88556 X-HE-Meta: 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 hcjfM8d8 RrTpLL177IzKnSX2+XjMO6jZagYmP2Fo6k4SuLvY22Qat3SVVMvMOjASNC55IM0ZQm/rrGvrJWmvmVYrEEy9Khd6cc6c4gNjycvE7MHCsTO7DvOlz6ZD08QakxoHhEhxhiJlexLzlh1G9nT2VU7oKl5/6/kOuSBrJLL+Bco4HNVMHAOuLz1AIG7hIgjVi762k0MwD6K35RIff7pevnHgiLeucng== X-Bogosity: Ham, tests=bogofilter, spamicity=0.000036, 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, Jan 22, 2025 at 2:59=E2=80=AFAM Bharata B Rao wro= te: > and one flush request is issued for the entire list. Where is the PMD > level (512) batching done? Is that implicit elsewhere in the flow? Yes, shrink_folio_list() operates on one PMD at a time, so pageout_list will contain at most 512 pages during each call. Please refer to madvise_cold_or_pageout_pte_range() in mm/madvise.c for more details. Thanks! Vinay