Received: by 2002:a05:7412:d384:b0:fc:a2b0:25d7 with SMTP id bq4csp4556rdb; Wed, 21 Feb 2024 13:47:44 -0800 (PST) X-Forwarded-Encrypted: i=3; AJvYcCWpqWbA1hHDD92h9bDcEwK2+ENfSD4xAITOhECGKfvKRI8eqA8MbWIXCTJd2+Msf04hoxgHXznJOcoqgI09D6AhRoyO19U0/2gUeZ1D0g== X-Google-Smtp-Source: AGHT+IErUOXYGoIgh7CT7hi0cXLmKCBWLd3u1770OVRzQ27CCkgIY9lynbY78YB3d95Mtm1ly4IE X-Received: by 2002:a2e:a790:0:b0:2d2:5634:34d3 with SMTP id c16-20020a2ea790000000b002d2563434d3mr2688101ljf.7.1708552064792; Wed, 21 Feb 2024 13:47:44 -0800 (PST) ARC-Seal: i=2; a=rsa-sha256; t=1708552064; cv=pass; d=google.com; s=arc-20160816; b=czH5f3VV2KxYBX+QlGjvVgy5OSEwQsrXgbUnuubjXPMnyTO5RcLNZPRuodzbMjYOC4 VwBPIk/DqxanfFAvZt8LRiLsMjFabzcj4qSJ9w+23AuAEuJ7LHPbt9nrtXtn9ODYiRsM DgqfEagjTP0iKCcnC2L6T1RdW4+37epSY3KZnOfiYJr7xnwliuXgnlKq8DOGtpJWFJSl O5yzdtcEvv/heWy2dF/f4AVp8yeCqukXRQaRduTiXPgqMuKP9UgaZEKZ2qSPY24GBy7i 3oHYHdrFyawxj6ddPBlQjipxhJeGSsK/EvovE3wRQClMgpjBJIuzJWHif+PCC07GAtdU ktBw== ARC-Message-Signature: i=2; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=content-transfer-encoding:cc:to:subject:message-id:date:from :in-reply-to:references:mime-version:list-unsubscribe:list-subscribe :list-id:precedence:dkim-signature; bh=gFsioKErNguGb0UXfpCehO3mOIaCj+gYffuxZggc6lc=; fh=FIriZTMTGL7/ki9jSq1WsfisHxbC+11erJEId26fyJQ=; b=bbkiCHzPJLjP/imycKGCPXMy1dXdreHkUO5lJhMX+wgalEpIVK20EJcX4Sram3VdFh f+8bBl137R6LjQBSBPRti4Qxc/a19j8srZPpc8Ve5BIlFnIQ9vCqENttbFlwKmw7E+DE jM5nWEIt7NiHN5QK4Qs4g/G0hqhlGMtpb+/RYJJkSVCoGE5N+g7VXNuR7xezUlYvJ/9R aDaVy1uTJrzgqkLEQfq7av2JcxMrp7PWOaJh023zWf4FoE4WQ+4PZVo5/pwL4mloLYcB 5u/TeORGsCBWShf6ypJFr6LzoRp/7Q+J8epgFqK+nd/QMWhFYY4acc66ZzAgRzsVHhNf omtA==; dara=google.com ARC-Authentication-Results: i=2; mx.google.com; dkim=pass header.i=@soleen-com.20230601.gappssmtp.com header.s=20230601 header.b=TvKM5Qjm; arc=pass (i=1 spf=pass spfdomain=soleen.com dkim=pass dkdomain=soleen-com.20230601.gappssmtp.com dmarc=pass fromdomain=soleen.com); spf=pass (google.com: domain of linux-kernel+bounces-75552-linux.lists.archive=gmail.com@vger.kernel.org designates 2604:1380:4601:e00::3 as permitted sender) smtp.mailfrom="linux-kernel+bounces-75552-linux.lists.archive=gmail.com@vger.kernel.org"; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=soleen.com Return-Path: Received: from am.mirrors.kernel.org (am.mirrors.kernel.org. [2604:1380:4601:e00::3]) by mx.google.com with ESMTPS id y7-20020a056402270700b0056502b65f6asi752360edd.74.2024.02.21.13.47.44 for (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 21 Feb 2024 13:47:44 -0800 (PST) Received-SPF: pass (google.com: domain of linux-kernel+bounces-75552-linux.lists.archive=gmail.com@vger.kernel.org designates 2604:1380:4601:e00::3 as permitted sender) client-ip=2604:1380:4601:e00::3; Authentication-Results: mx.google.com; dkim=pass header.i=@soleen-com.20230601.gappssmtp.com header.s=20230601 header.b=TvKM5Qjm; arc=pass (i=1 spf=pass spfdomain=soleen.com dkim=pass dkdomain=soleen-com.20230601.gappssmtp.com dmarc=pass fromdomain=soleen.com); spf=pass (google.com: domain of linux-kernel+bounces-75552-linux.lists.archive=gmail.com@vger.kernel.org designates 2604:1380:4601:e00::3 as permitted sender) smtp.mailfrom="linux-kernel+bounces-75552-linux.lists.archive=gmail.com@vger.kernel.org"; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=soleen.com Received: from smtp.subspace.kernel.org (wormhole.subspace.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by am.mirrors.kernel.org (Postfix) with ESMTPS id 208DD1F27EFE for ; Wed, 21 Feb 2024 21:37:58 +0000 (UTC) Received: from localhost.localdomain (localhost.localdomain [127.0.0.1]) by smtp.subspace.kernel.org (Postfix) with ESMTP id 860BF12DDBA; Wed, 21 Feb 2024 21:31:19 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=soleen-com.20230601.gappssmtp.com header.i=@soleen-com.20230601.gappssmtp.com header.b="TvKM5Qjm" Received: from mail-qt1-f177.google.com (mail-qt1-f177.google.com [209.85.160.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id E8C5E12DDA1 for ; Wed, 21 Feb 2024 21:31:16 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.160.177 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1708551078; cv=none; b=bmkA3MvMYTMZWzyU/6DAukbRfyyffva27uWslvvlNtX3fFul6ZZ3Y9m2I+1rHJyIPgtEFvS0d+hxm17BNTkGQbH7dicokrc83zesh4+wYVnehpZXHaiWPwDP8zNquSxAoufe+QgWKFE3wDc6Tiko+0w6WEUZAbvG0IORgv91WNY= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1708551078; c=relaxed/simple; bh=gFsioKErNguGb0UXfpCehO3mOIaCj+gYffuxZggc6lc=; h=MIME-Version:References:In-Reply-To:From:Date:Message-ID:Subject: To:Cc:Content-Type; b=KbaF2rCs4sC8dGm2pKQ0N778AIG+sRlOo9Nc2yPRHK4A6bQOVWK4I9PM7QF1Zbkud2aqT9s7H5BQJTZlvQj6CCpKTQ7QdWr3UdzLjRtX1/bapBSvZZfNkcEguTIoRnnfeaB4e4GDG/pG5BwFvOjaVAmBkvnxIjuTeOkJDCgfKm8= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=soleen.com; spf=pass smtp.mailfrom=soleen.com; dkim=pass (2048-bit key) header.d=soleen-com.20230601.gappssmtp.com header.i=@soleen-com.20230601.gappssmtp.com header.b=TvKM5Qjm; arc=none smtp.client-ip=209.85.160.177 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=soleen.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=soleen.com Received: by mail-qt1-f177.google.com with SMTP id d75a77b69052e-42a4516ec46so2209541cf.0 for ; Wed, 21 Feb 2024 13:31:16 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=soleen-com.20230601.gappssmtp.com; s=20230601; t=1708551076; x=1709155876; darn=vger.kernel.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=gFsioKErNguGb0UXfpCehO3mOIaCj+gYffuxZggc6lc=; b=TvKM5QjmE9xrfDQJ0zweQnLEld1ypTjdep3yzcgaY30WwpzHdpmS5OdggDnbCVaKgl 1JI/zHkJI7W6/zh4E+3JMqzlHbFQqqjxdhIdIhzoFfy9vEkG0Ut4sFjJAWQIxQfVcLLI ugE17rbvStlLf4KlWm7GZ4w0Y23sSuKIgk/Gp0ewW1tpB1IW3EUUNBOK2S0IvZMhQBAV Fljy92n/Wd4jpdvCPDYvSWZFTUCreb0Gt1ia9PFfu8yiO4DmpffOnJASQG1dxoO8YQMc KUK3XFt3/8JyqXNqZ/Q+U1IaLjSKpwN+bGASvPMOF6g+KRYRa0s4joCrPuQI+G3jREI1 +i+A== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1708551076; x=1709155876; 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=gFsioKErNguGb0UXfpCehO3mOIaCj+gYffuxZggc6lc=; b=u8NUCoRNFozYdGl1ieBC+7ra6Ukmxsn+WSckvuRWGtGZw9ZKYFIF9XzrX2XaOgNpnA KdFYHvBDnaTMU2v0gkTmxOo5D+RnJ9hKKgjLG5mUxqr8LAtMvBmHz+RlGsKtv/x5EAhN zdjv51JXsC3gDPY0b5/LC0qFei41OoHHRNBP5MZA/i9quTBkrxRlj68a9t7C9sBOQ/hR YnGBQQ9FB+79bq5oUAuEjoNSc5xenY573zzbrigUX0J7tPKgbel8pXMH1zNYNiY0c7k8 w3eVfQtIgAJoS6NS8o7hm6lNloz0xPzDJtMZfAjH2RJrbvQvHVDM+pdzZiX+sK9mfFQN b0mA== X-Forwarded-Encrypted: i=1; AJvYcCVy/ZIrT0vLMxmeuRDr/jhEz4Rlkq7vNCTiuidc84me7kpTpio1KgjL5GQHewqcqOM7Nh9jnqLRAqcyNnDNxScGTLdSA77nX8sjEdsh X-Gm-Message-State: AOJu0Yxu6jWIOMPoEpbBiR3OTE/MEMnhsaRLrcoRfYbG6SjoNtIiTgwD 0lyBL4SqVQNBk2TD0NkhlJgy7R7bHYsRjrn1HCrxrkgua5rlLyEdlwKfoOozFsRSsX6TSPZ5UYz DImrrdK6e8DDUqNKATpcrVB/gwx6LFol47lgNgA== X-Received: by 2002:ac8:570f:0:b0:42c:78fd:e4fa with SMTP id 15-20020ac8570f000000b0042c78fde4famr1316065qtw.32.1708551075946; Wed, 21 Feb 2024 13:31:15 -0800 (PST) Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 References: <20240221194052.927623-1-surenb@google.com> <20240221194052.927623-8-surenb@google.com> In-Reply-To: <20240221194052.927623-8-surenb@google.com> From: Pasha Tatashin Date: Wed, 21 Feb 2024 16:30:39 -0500 Message-ID: Subject: Re: [PATCH v4 07/36] mm: introduce slabobj_ext to support slab object extensions To: Suren Baghdasaryan Cc: akpm@linux-foundation.org, kent.overstreet@linux.dev, mhocko@suse.com, vbabka@suse.cz, hannes@cmpxchg.org, roman.gushchin@linux.dev, mgorman@suse.de, dave@stgolabs.net, willy@infradead.org, liam.howlett@oracle.com, penguin-kernel@i-love.sakura.ne.jp, corbet@lwn.net, void@manifault.com, peterz@infradead.org, juri.lelli@redhat.com, catalin.marinas@arm.com, will@kernel.org, arnd@arndb.de, tglx@linutronix.de, mingo@redhat.com, dave.hansen@linux.intel.com, x86@kernel.org, peterx@redhat.com, david@redhat.com, axboe@kernel.dk, mcgrof@kernel.org, masahiroy@kernel.org, nathan@kernel.org, dennis@kernel.org, tj@kernel.org, muchun.song@linux.dev, rppt@kernel.org, paulmck@kernel.org, yosryahmed@google.com, yuzhao@google.com, dhowells@redhat.com, hughd@google.com, andreyknvl@gmail.com, keescook@chromium.org, ndesaulniers@google.com, vvvvvv@google.com, gregkh@linuxfoundation.org, ebiggers@google.com, ytcoode@gmail.com, vincent.guittot@linaro.org, dietmar.eggemann@arm.com, rostedt@goodmis.org, bsegall@google.com, bristot@redhat.com, vschneid@redhat.com, cl@linux.com, penberg@kernel.org, iamjoonsoo.kim@lge.com, 42.hyeyoo@gmail.com, glider@google.com, elver@google.com, dvyukov@google.com, shakeelb@google.com, songmuchun@bytedance.com, jbaron@akamai.com, rientjes@google.com, minchan@google.com, kaleshsingh@google.com, kernel-team@android.com, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, iommu@lists.linux.dev, linux-arch@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-mm@kvack.org, linux-modules@vger.kernel.org, kasan-dev@googlegroups.com, cgroups@vger.kernel.org Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable On Wed, Feb 21, 2024 at 2:41=E2=80=AFPM Suren Baghdasaryan wrote: > > Currently slab pages can store only vectors of obj_cgroup pointers in > page->memcg_data. Introduce slabobj_ext structure to allow more data > to be stored for each slab object. Wrap obj_cgroup into slabobj_ext > to support current functionality while allowing to extend slabobj_ext > in the future. > > Signed-off-by: Suren Baghdasaryan Reviewed-by: Pasha Tatashin