Received: by 2002:a05:6a10:8c0a:0:0:0:0 with SMTP id go10csp163640pxb; Wed, 20 Jan 2021 04:04:14 -0800 (PST) X-Google-Smtp-Source: ABdhPJzu0dR8735Nsf0j9ikg+4O5U8w3aU8qE3RrTsN7epRuoFh8eeT47DP/OYi0jrf3eM34qEEX X-Received: by 2002:a17:906:2a06:: with SMTP id j6mr5668257eje.164.1611144254245; Wed, 20 Jan 2021 04:04:14 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1611144254; cv=none; d=google.com; s=arc-20160816; b=bSGcv5I/4cscQLvh80Czn/pmZE281YD+K7FnqT/RVToMQw4M+PgyUQt5hWI5tA7UX7 MOGvMMfnqta6t/UZbyw4yuTVjVIr+iJmGzSmeCdhLaS+76MhBK+FppSYSq+u+i9JoQ1s 70u9LrnA/ZE4zJ/KHPHAubCwaxvrUw3Ql8KmuqeYiaJCVZQri4aauuz0AxKsYaGd2h+w blOfTSmY4qGeNfsFCtyfeZu23wQn4jcfPIEKbHgWcG5/xnGYgD/6ZCNoFsyd6z1AxG4m NCrQbxw8ckfecbh2g5099PIjXOMv/KNEP9siJmu0o9OWBMvuCqhMbL4tGCCSwJiYFoO9 iP0w== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:user-agent:in-reply-to:content-disposition :mime-version:references:message-id:subject:cc:to:from:date; bh=s0uxVre4jzky2UlBpc8T7WX4+QutvsHikOMrfaYqZWM=; b=LqFTWJp3/OYzYi0H7TRh7xVghiAheD1TybEvfatyAoQeImNDVzkCOYQIwbT7/cyfDd 0dz+jKUHtHkhTewk5dh8tkS+LU+1LLLfvkanykkYX+8y9R1baF1EOVvhfqeLDJwk8iDO phJgl4+gQKEzZrXaBg7FfjMo8JYscrbU+zZVX76qjx6EUT5m2RjgC4sEBFXj2KVlEmGn z2zNEhu9+H6i4CSsx0J76d6MKkJnF7vA4WVPmrYBVOo4wQJ7H8nsYDNAt2gQgbbLbLMm /tmMOyfoy8viebfS6G3LBSsO3NI2BPWoFYcgSwVhowUQOz5lNbSY9NlpUOiTB5hiufC8 4nnQ== ARC-Authentication-Results: i=1; mx.google.com; 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 Return-Path: Received: from vger.kernel.org (vger.kernel.org. [23.128.96.18]) by mx.google.com with ESMTP id b21si612618ejv.648.2021.01.20.04.03.41; Wed, 20 Jan 2021 04:04:14 -0800 (PST) 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; 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 Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731920AbhATLjV (ORCPT + 99 others); Wed, 20 Jan 2021 06:39:21 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:33576 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730486AbhATKrz (ORCPT ); Wed, 20 Jan 2021 05:47:55 -0500 Received: from Chamillionaire.breakpoint.cc (Chamillionaire.breakpoint.cc [IPv6:2a0a:51c0:0:12e:520::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 2C256C0613ED; Wed, 20 Jan 2021 02:46:59 -0800 (PST) Received: from fw by Chamillionaire.breakpoint.cc with local (Exim 4.92) (envelope-from ) id 1l2B0H-00051F-Cb; Wed, 20 Jan 2021 11:46:21 +0100 Date: Wed, 20 Jan 2021 11:46:21 +0100 From: Florian Westphal To: menglong8.dong@gmail.com Cc: kuba@kernel.org, christian.brauner@ubuntu.com, davem@davemloft.net, yoshfuji@linux-ipv6.org, dong.menglong@zte.com.cn, daniel@iogearbox.net, gnault@redhat.com, ast@kernel.org, nicolas.dichtel@6wind.com, ap420073@gmail.com, edumazet@google.com, pabeni@redhat.com, jakub@cloudflare.com, bjorn.topel@intel.com, keescook@chromium.org, viro@zeniv.linux.org.uk, rdna@fb.com, maheshb@google.com, netdev@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH net-next 3/3] net: core: Namespace-ify sysctl_rmem_max and sysctl_wmem_max Message-ID: <20210120104621.GM19605@breakpoint.cc> References: <20210118143932.56069-1-dong.menglong@zte.com.cn> <20210118143932.56069-4-dong.menglong@zte.com.cn> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20210118143932.56069-4-dong.menglong@zte.com.cn> User-Agent: Mutt/1.10.1 (2018-07-13) Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org menglong8.dong@gmail.com wrote: > From: Menglong Dong > > For now, sysctl_wmem_max and sysctl_rmem_max are globally unified. > It's not convenient in some case. For example, when we use docker > and try to control the default udp socket receive buffer for each > container. > > For that reason, make sysctl_wmem_max and sysctl_rmem_max > per-namespace. I think having those values be restricted by init netns is a desirable property.