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 B9796C369D1 for ; Fri, 25 Apr 2025 04:12:02 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id B8BDB6B0006; Fri, 25 Apr 2025 00:12:00 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id B3B616B0007; Fri, 25 Apr 2025 00:12:00 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id A27BF6B0008; Fri, 25 Apr 2025 00:12:00 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0017.hostedemail.com [216.40.44.17]) by kanga.kvack.org (Postfix) with ESMTP id 827696B0006 for ; Fri, 25 Apr 2025 00:12:00 -0400 (EDT) Received: from smtpin16.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay08.hostedemail.com (Postfix) with ESMTP id 7C1821409A8 for ; Fri, 25 Apr 2025 04:12:01 +0000 (UTC) X-FDA: 83371243242.16.EFC373C Received: from out-180.mta0.migadu.com (out-180.mta0.migadu.com [91.218.175.180]) by imf09.hostedemail.com (Postfix) with ESMTP id 834E6140002 for ; Fri, 25 Apr 2025 04:11:59 +0000 (UTC) Authentication-Results: imf09.hostedemail.com; dkim=pass header.d=linux.dev header.s=key1 header.b=fYeaQL95; spf=pass (imf09.hostedemail.com: domain of shakeel.butt@linux.dev designates 91.218.175.180 as permitted sender) smtp.mailfrom=shakeel.butt@linux.dev; dmarc=pass (policy=none) header.from=linux.dev ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1745554319; 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=cuCg6ijI2TH+LC6Fyid+TCSLZ7DunTJod95bwhKMHbk=; b=ietZjN/ny6qVljAtT227uOzu58DzQZqI0dH3hXZs6tIcsy/ExEe2sBOq9M51cVf/sIRVeC +Qyf3lNah3VaR47lSvONJjmAqGS9wNye04RPxdj2zN3xmAz8yJOlgKLXCuRrCW26gMlSUV 0JEhTjid7raH2HUiXXtvOAgV/ALMoKE= ARC-Authentication-Results: i=1; imf09.hostedemail.com; dkim=pass header.d=linux.dev header.s=key1 header.b=fYeaQL95; spf=pass (imf09.hostedemail.com: domain of shakeel.butt@linux.dev designates 91.218.175.180 as permitted sender) smtp.mailfrom=shakeel.butt@linux.dev; dmarc=pass (policy=none) header.from=linux.dev ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1745554319; a=rsa-sha256; cv=none; b=LTQSWX923e80kIJzu5nfIepVCTBHR/rB9oG/FrR9ccY6uSMs6yswfvMKTsDLhz3w1voFCA Oj9M2zFpFAbPqF3sPZL2yC4rb9JHRuE3peKRK/cthNIQx0uZnDIMpswGSff5RqoWvb87Ds PZdzIoGmQslxXX8J4eo2C/eqMOG4nAo= X-Forwarded-Encrypted: i=1; AJvYcCUY7kLfliYEx0065fqnqPxF6BC9gBv1eIlhZ6WSD2O2HwweTWF8dNmf1vw4JUbHqvRgYrfn0QpC/A==@kvack.org DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.dev; s=key1; t=1745554317; h=from:from: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; bh=cuCg6ijI2TH+LC6Fyid+TCSLZ7DunTJod95bwhKMHbk=; b=fYeaQL95a48aL/2ybkEq6wAP5ajYFBLkVgklaIziGnTYkupDuNNlDOMolUkbl3rANFMEbq obgaZCvFozwWdBFcLiE9rrJWz1T86jSvbHB9QHH8F0plu6VvqgOZLWGbdzvUqXYB9rkuMe Utqkk1QGj/jCCUf6cK7SaiJcqHIPSqs= X-Gm-Message-State: AOJu0YxKcwpizIx3TfUgYE5WbAXNbJ00nQPi1diNsRbs4tjsLsL7ckKr BE1CM0Oc+T26Tsa5g324Fe4QEo6TaBs6qW1oVY9SOFbvl1qfNhZidJ2nz73+xnH+7Ryj/8PQoga 2acHFqU7uBpz8EH2lKn4qKu0o1Sk= X-Google-Smtp-Source: AGHT+IE4+ZZw1WQEvPFm/BGNa+LVBegmw46Ez+nFYA+a/+S+oR+yCxUKcymuwnUqgPoJ5PYHrIHZJ8y+iDk/5gGJGUk= X-Received: by 2002:a05:6102:c01:b0:4b2:adfb:4f91 with SMTP id ada2fe7eead31-4d545845338mr229442137.21.1745554312652; Thu, 24 Apr 2025 21:11:52 -0700 (PDT) MIME-Version: 1.0 References: <20250425031935.76411-1-link@vivo.com> <20250425031935.76411-2-link@vivo.com> In-Reply-To: <20250425031935.76411-2-link@vivo.com> X-Report-Abuse: Please report any abuse attempt to abuse@migadu.com and include these headers. From: Shakeel Butt Date: Thu, 24 Apr 2025 21:11:41 -0700 X-Gmail-Original-Message-ID: X-Gm-Features: ATxdqUGa33ZQ78AWa3C3GwORVACmk7lh6bfF8AxM79f-ya7keIRx1QdcR1UoWhk Message-ID: Subject: Re: [PATCH v3 1/3] mm/memcg: move mem_cgroup_init() ahead of cgroup_init() To: Huan Yang Cc: Johannes Weiner , Michal Hocko , Roman Gushchin , Muchun Song , Andrew Morton , Petr Mladek , Vlastimil Babka , Rasmus Villemoes , Francesco Valla , Raul E Rangel , "Paul E. McKenney" , Huang Shijie , Guo Weikang , "Uladzislau Rezki (Sony)" , KP Singh , cgroups@vger.kernel.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org, Alexander Gordeev , Boqun Feng , opensource.kernel@vivo.com Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Migadu-Flow: FLOW_OUT X-Rspam-User: X-Rspamd-Server: rspam09 X-Rspamd-Queue-Id: 834E6140002 X-Stat-Signature: ix65iwhu4emdhm85m5xcf71qx4aop1bz X-HE-Tag: 1745554319-806005 X-HE-Meta: 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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: On Thu, Apr 24, 2025 at 8:19=E2=80=AFPM Huan Yang wrote: > > When cgroup_init() creates root_mem_cgroup through css_alloc callback, > some critical resources might not be fully initialized, forcing later > operations to perform conditional checks for resource availability. > > This patch move mem_cgroup_init() to address the init order, it invoke > before cgroup_init, so, compare to subsys_initcall, it can use to prepare > some key resources before root_mem_cgroup alloc. > > Signed-off-by: Huan Yang > Suggested-by: Shakeel Butt Acked-by: Shakeel Butt