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 X-Spam-Level: X-Spam-Status: No, score=-3.6 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id DFD62C388F9 for ; Fri, 13 Nov 2020 04:08:40 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 8450822244 for ; Fri, 13 Nov 2020 04:08:38 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="EAwjbLbL" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726194AbgKMEIh (ORCPT ); Thu, 12 Nov 2020 23:08:37 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:45662 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726054AbgKMEIh (ORCPT ); Thu, 12 Nov 2020 23:08:37 -0500 Received: from mail-lj1-x244.google.com (mail-lj1-x244.google.com [IPv6:2a00:1450:4864:20::244]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id C8062C0613D1; Thu, 12 Nov 2020 20:08:36 -0800 (PST) Received: by mail-lj1-x244.google.com with SMTP id i17so7944298ljd.3; Thu, 12 Nov 2020 20:08:36 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=AZbl5qbJ0BQUlrCyYeuRH2WHBnTTfBroCA0v71gGPzM=; b=EAwjbLbLZtio+We3R3VZRYvj8d2ngKxaxveWpWwYrnIPLKEbhUj/0vqLWp5jnUYW+K cVDEscUOGKWvkEYFY9uhr2jSdDq63oW0LI5gNdQmWW32+K8JRM0PYphZUGBqSL7UGY4h vULs8BPfNjVBoconwBuxls9FBcRDCuTkW6N42c6oEiqFu+JFbxPOr1ma1jX9Yf1MuNch r7WOaw8GfAC6fmCG9KaDBXDGs9yooxLs2rAcITKbQKh+gawvPYDmmNZEKMNVPlepDaRO 8hgGhJRxKj2i9pNPdj3vA37kKT2po4d/CbXci9GlI3kx+13ohgyL3632NnFDamlYw5tz my/w== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=AZbl5qbJ0BQUlrCyYeuRH2WHBnTTfBroCA0v71gGPzM=; b=clBT98iKKL2/uut+5bCrgiPT8CEiZshNniXBqAyiws7g0bH5zXsFnk35jTHYZoHjvi NoPh5bg37v9dQVn3y5i60MMgmUwBawMo1yF7TLrIiJE928Kr4GXTPcdlhZbMwABsduRt r8cjcERhyYQR6K1upOIjUVAPCY8r1yavl77DZmOVUmYPuu41ik0FGl5JFw64HbKamuEf 8/vsd5FOxoN8xDWhdZJpzCtYebrnsIlD38Q49D0kDBzEU27MQrspjy+yj7UgqvGOJZbO bbGy19go0ChuFr28s3ta6UUcE9tbr/L1qXWPz7zJr/FFJf9Fgz+DHdleBuiuHuvzPtTu sOuw== X-Gm-Message-State: AOAM532Af6ueC+xQlP5ziFaRYARkhIgdN+49Uv0tFnz3jjfL+2oiGUWK ziaqDvfGVbE4tOBlGGngZD5lcqiIqcpgAyn2mM4= X-Google-Smtp-Source: ABdhPJzn7EMs1Itqci9FPcfCt6upEFH2ibkruLV6wZMffSYb9PRpRtA0Cdmdo18qJ8tzhz+H0mO+bfL6S2Reiaq5dhs= X-Received: by 2002:a2e:86c5:: with SMTP id n5mr213289ljj.450.1605240513968; Thu, 12 Nov 2020 20:08:33 -0800 (PST) MIME-Version: 1.0 References: <20201112221543.3621014-1-guro@fb.com> <20201112221543.3621014-2-guro@fb.com> <20201113095632.489e66e2@canb.auug.org.au> <20201113002610.GB2934489@carbon.dhcp.thefacebook.com> <20201113030456.drdswcndp65zmt2u@ast-mbp> <20201112191825.1a7c3e0d50cc5e375a4e887c@linux-foundation.org> <20201112194047.ea7c95e2876931fc57ae1cee@linux-foundation.org> In-Reply-To: <20201112194047.ea7c95e2876931fc57ae1cee@linux-foundation.org> From: Alexei Starovoitov Date: Thu, 12 Nov 2020 20:08:22 -0800 Message-ID: Subject: Re: [PATCH bpf-next v5 01/34] mm: memcontrol: use helpers to read page's memcg data To: Andrew Morton Cc: Roman Gushchin , Stephen Rothwell , bpf , Alexei Starovoitov , Daniel Borkmann , Network Development , Andrii Nakryiko , Shakeel Butt , linux-mm , LKML , Kernel Team , Johannes Weiner , Michal Hocko Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu, Nov 12, 2020 at 7:40 PM Andrew Morton wrote: > > On Thu, 12 Nov 2020 19:25:48 -0800 Alexei Starovoitov wrote: > > > On Thu, Nov 12, 2020 at 7:18 PM Andrew Morton wrote: > > > > > > On Thu, 12 Nov 2020 19:04:56 -0800 Alexei Starovoitov wrote: > > > > > > > On Thu, Nov 12, 2020 at 04:26:10PM -0800, Roman Gushchin wrote: > > > > > > > > > > These patches are not intended to be merged through the bpf tree. > > > > > They are included into the patchset to make bpf selftests pass and for > > > > > informational purposes. > > > > > It's written in the cover letter. > > > > ... > > > > > Maybe I had to just list their titles in the cover letter. Idk what's > > > > > the best option for such cross-subsystem dependencies. > > > > > > > > We had several situations in the past releases where dependent patches > > > > were merged into multiple trees. For that to happen cleanly from git pov > > > > one of the maintainers need to create a stable branch/tag and let other > > > > maintainers pull that branch into different trees. This way the sha-s > > > > stay the same and no conflicts arise during the merge window. > > > > In this case sounds like the first 4 patches are in mm tree already. > > > > Is there a branch/tag I can pull to get the first 4 into bpf-next? > > > > > > Not really, at present. This is largely by design, although it does cause > > > this problem once or twice a year. > > > > > > These four patches: > > > > > > mm-memcontrol-use-helpers-to-read-pages-memcg-data.patch > > > mm-memcontrol-slab-use-helpers-to-access-slab-pages-memcg_data.patch > > > mm-introduce-page-memcg-flags.patch > > > mm-convert-page-kmemcg-type-to-a-page-memcg-flag.patch > > > > > > are sufficiently reviewed - please pull them into the bpf tree when > > > convenient. Once they hit linux-next, I'll drop the -mm copies and the > > > bpf tree maintainers will then be responsible for whether & when they > > > get upstream. > > > > That's certainly an option if they don't depend on other patches in the mm tree. > > Roman probably knows best ? > > That should be OK. They apply and compile ;) Awesome. Thank you both for confirming. Will take them as soon as the rest of the set is reviewed.