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[23.128.96.18]) by mx.google.com with ESMTP id x19si4271923ioa.74.2021.07.27.14.53.27; Tue, 27 Jul 2021 14:53:38 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; dkim=pass header.i=@google.com header.s=20161025 header.b=vU99ZBKD; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=REJECT sp=REJECT dis=NONE) header.from=google.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232227AbhG0VvF (ORCPT + 99 others); Tue, 27 Jul 2021 17:51:05 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:37944 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232088AbhG0VvE (ORCPT ); Tue, 27 Jul 2021 17:51:04 -0400 Received: from mail-lf1-x12e.google.com (mail-lf1-x12e.google.com [IPv6:2a00:1450:4864:20::12e]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id DC6FEC061765 for ; Tue, 27 Jul 2021 14:51:03 -0700 (PDT) Received: by mail-lf1-x12e.google.com with SMTP id h14so9481lfv.7 for ; Tue, 27 Jul 2021 14:51:03 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=5GJDqmdaLtkaW7Otz+OuKF+u9n9yLDONH7a1pUz+R4g=; b=vU99ZBKDzMVUNqf5sfsmKOTh7f/nFBljme/8vZdWEh6VMl+6pjjr+Fh1/llaa1Tmu6 E9e293cJN6TpD5hWLPrX7NX8k8plP1ci4gLMwOoW9HRfOhn/zBJTz95wIGo8wmUwy72t Q8tIijJECxZZ/W7XHUlaS1CYRF5ZbobafO8eG4ZXzbODrSoQrWT+KHtcnPJ+eTgQiKCN PGhFkiev0aEVZ+yPmByqlCAKbem3VGZ8EI60BhFe7uveUqq3jRNUoMwJTeq236JUuDip Qoxh+xV/V4nysMXdXY/TVCpkHGqeXFqXWYC3SFsVAGOZZIfMsH+Nw6n2bnmPy0sihGCH GWEw== 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=5GJDqmdaLtkaW7Otz+OuKF+u9n9yLDONH7a1pUz+R4g=; b=p2ALEe4AVRriVc4iqUNwj2E6GMmL3MX5Fousjy5kXVYM1MmdZLnoTMStk5ei7erdPl flERMKb82Eu7hioCCpp8tRpi+VugPDIjRI2qvoUsLAbDu12vOeUgMn981Jwm4BEa/a9m 3R3DXAFtY8LFHZYu5SvVtEIE+/jGCAGeUdHLnddMN6nFl3wspf0Bce/PcQd7d06gcQyt 8x8PdBgRTBmVweHyHOw442O8OVpO9VxFx/v69+0pCLLsPsYhmLPUo5fMK5efh+GFU0vh FtQnx92feHV+hKvqO9DFpV2U+cFrbnyiknLRLoF8NWWixcebIYliXvdSgZqrRUG0X3cB m4Ww== X-Gm-Message-State: AOAM530E2NqYOdmSsVmUZAsnukI2bJ4mmGFtv9TvYVT7BA4Iz2oHpFYF wwCIQDRktbgZpN4/7fOR++8Qx8seZdiSvG5Q6y6/vA== X-Received: by 2002:ac2:4d86:: with SMTP id g6mr17787703lfe.549.1627422661756; Tue, 27 Jul 2021 14:51:01 -0700 (PDT) MIME-Version: 1.0 References: <6f21a0e0-bd36-b6be-1ffa-0dc86c06c470@virtuozzo.com> <1b408625-d71c-0b26-b0b6-9baf00f93e69@virtuozzo.com> In-Reply-To: <1b408625-d71c-0b26-b0b6-9baf00f93e69@virtuozzo.com> From: Shakeel Butt Date: Tue, 27 Jul 2021 14:50:50 -0700 Message-ID: Subject: Re: [PATCH v7 04/10] memcg: enable accounting for fasync_cache To: Vasily Averin Cc: Andrew Morton , Cgroups , Michal Hocko , Johannes Weiner , Vladimir Davydov , Roman Gushchin , Alexander Viro , Jeff Layton , "J. Bruce Fields" , linux-fsdevel , LKML Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, Jul 26, 2021 at 10:33 PM Vasily Averin wrote: > > fasync_struct is used by almost all character device drivers to set up > the fasync queue, and for regular files by the file lease code. > This structure is quite small but long-living and it can be assigned > for any open file. > > It makes sense to account for its allocations to restrict the host's > memory consumption from inside the memcg-limited container. > > Signed-off-by: Vasily Averin Reviewed-by: Shakeel Butt