From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 5A467346791; Tue, 26 May 2026 04:09:34 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1779768577; cv=none; b=j31u+50NgRibhNJekAKYbMs7rAOg19XtodHE7azuYVjzlibOM0KmoIqYXtcVN4YDWGpbEx5EpXWaSanGRZCfgQAMAn8qUjlwyOfUjK1HgEFsrncjVLIE0U7jM0c3ZKvRwuc6oQzlBUOkLwO9ZIm5IKDIEAwTjDAYBIZlRprsm4E= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1779768577; c=relaxed/simple; bh=NvZVqZuQ7y2IwzLbMgpaOQ7CYW4He6M5aDwstA1GzFY=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=N+cH/o8/jAGUq+lFvO+nH5ty8YGwYmnVT3STbMjyUaca45iUd2OxGM4vn9GG4OGkGbc7B9DUXmfJbH6ZH+iL0B5gsu6K5CTALpg6oG7BXD+lOfCmgPdziT+BSZCqTLP+h1sGRt22RxAlPcl0wCGWUZbfd9p/mjTjJg6f0Y7dksY= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=ZDItGFol; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="ZDItGFol" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 7C7891F000E9; Tue, 26 May 2026 04:09:28 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1779768570; bh=CQd79S3jmwh5Od5pm5jxNxTwgJT8xPboifU1ZFa5Ro8=; h=Date:Subject:To:Cc:References:From:In-Reply-To; b=ZDItGFol54Vyau00nEwrGiLqSd89co+5KygIfEcE5Yr9VyW3cUR4nJWWme0xPopxf taMzNt2gz2DLL+gNKrkkZFSSOJ3NRNjd3xNYd5JlyE/NQiMf+s1ijUNsWwhZXPyUe/ v14XqSFIG8rjcaV8gI7SXwL4XlEJvmbpP/YP636LSFKbCiO8y6Cvc44SYbLXde+SNE z9TscFICTMfvkGQgGB3jyhh227m6Ji9ic0Q+OFIgYi2dQpkCvSc6gH7JPfXTIoODNi 0rT5IJ4En/qwmqN2yW2gHJCWpxAm1i3UsTPwTazILJKAeS77pIWzU6hLUsYRvKVoAr sTx9ONa6Ijn2g== Message-ID: Date: Tue, 26 May 2026 13:09:26 +0900 Precedence: bulk X-Mailing-List: cgroups@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v3] memcg: cache obj_stock by memcg, not by objcg pointer To: Shakeel Butt , Andrew Morton Cc: Johannes Weiner , Michal Hocko , Roman Gushchin , Muchun Song , Qi Zheng , Alexandre Ghiti , Joshua Hahn , Meta kernel team , linux-mm@kvack.org, cgroups@vger.kernel.org, linux-kernel@vger.kernel.org, kernel test robot References: <20260518222827.110696-1-shakeel.butt@linux.dev> <4e296262-fbbf-4ac7-aecc-3ef831583704@kernel.org> <20260519134927.ee04379d07b0674872422c06@linux-foundation.org> Content-Language: en-US From: Harry Yoo In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit On 5/23/26 1:16 AM, Shakeel Butt wrote: > On Tue, May 19, 2026 at 01:49:27PM -0700, Andrew Morton wrote: >> On Tue, 19 May 2026 13:11:13 -0700 Shakeel Butt wrote: >> >>> Andrew, please don't send this patch to Linus until we decide on the option. >> >> No probs, I added a note-to-self. > > Here is my suggestion on how to proceed. > > 1. Let's drop this patch (memcg: cache obj_stock by memcg, not by objcg pointer) > from mm-tree. > > 2. Let's not add anything to 7.1. > > 3. 7.2+ will have the multi-objcg series [1] and the patches will have fixes > tag. If someone uses non-LTS 7.1, they can easily find those patches and can > backport them. > > Please let me know if there are any concerns. Sounds fair to me. > [1] https://lore.kernel.org/20260522011908.1669332-1-shakeel.butt@linux.dev/ Thanks! -- Cheers, Harry / Hyeonggon