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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id D42FDC433EF for ; Fri, 18 Feb 2022 10:18:09 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232967AbiBRKSY (ORCPT ); Fri, 18 Feb 2022 05:18:24 -0500 Received: from mxb-00190b01.gslb.pphosted.com ([23.128.96.19]:58922 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231867AbiBRKSX (ORCPT ); Fri, 18 Feb 2022 05:18:23 -0500 Received: from mail-lj1-x232.google.com (mail-lj1-x232.google.com [IPv6:2a00:1450:4864:20::232]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 3C65A15C9F8; Fri, 18 Feb 2022 02:18:07 -0800 (PST) Received: by mail-lj1-x232.google.com with SMTP id n24so3541326ljj.10; Fri, 18 Feb 2022 02:18:07 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=date:from:to:cc:subject:message-id:references:mime-version :content-disposition:in-reply-to; bh=2ZwRbT+1qqEejXkPLNRT0P8U1UfOqBbbk2S+jBiDX7w=; b=HwIPNQm6bvP1qyt1DqVyrK6i1IxYBe3pF4kvKD1l9aL3skpcmD5TAiFiTR6vJgOz7B t0z9AUGb6zG6pfmU+9BHmWZjjYP8p3JYLtLTfoKdh3BnjyAxS8kyH7aEYnXi01jFZIzF 573soHdCsmr3/P5ZM1x4mLpZvC48QquGUZEsW8SQQoM18/kWlPpgaxZHrqDS4b16t7Hk CPrKR07D3pDZ+6DpMa26njx9Ou6mX/WqALsfbj1Nd6drypXMoKGnpqS7eLYJp4gC/zQZ HSj8/Kstfvi7dLE4U0H5uDSTCcko9eMQl/aHEl20oLYR3YeK8yM1gI0YoPwa5+wSkB+m kvAQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to; bh=2ZwRbT+1qqEejXkPLNRT0P8U1UfOqBbbk2S+jBiDX7w=; b=Rrff1ppEKFr5n76ER/Jmq2+22XhwZvXYSYmBlwxXoG+yztqBwi8r9DeaOAYGdeBo6O SXdQoBsjvoEAWcyO2qRLdawDdUaGoJ736q6Dae+BUOWiPRx2BE7cz0HpeEstQV3fw8/H aH3KusAIpMcqxqSlYgJ0U2tGDT8O2UXUVHUrkL4jIB2mFc17/8n40CGiZC11R3NGlz49 ehqQl5PPyVqvsdKx7zE5b/RB4ieSGiatmpvxvrvz8+u3TRf37TnRMdOR0R7X1EAg7QPn QPYpAG0K92Q9TajtIwLbTQS807LlHB+7hngoc0Q/W4tOya2FP5jKW9GTb5FrmPyrNYnQ RVuQ== X-Gm-Message-State: AOAM53355PCix2gDEzs9ALsM6AFmDr8DPvWXfvz95Xqbhxmr5uXV9bVm 5i1nZY2h1VKu8NlZP/8D4oI= X-Google-Smtp-Source: ABdhPJzoG5dWVDHzQOQKtFLm+HFsVZSdj/YZ6lPLZtzc83WeDz9kMHzkcgdFaN0a4Fhn9IjcgX1EIQ== X-Received: by 2002:a05:651c:1594:b0:244:d406:5224 with SMTP id h20-20020a05651c159400b00244d4065224mr5639426ljq.130.1645179485463; Fri, 18 Feb 2022 02:18:05 -0800 (PST) Received: from curiosity ([5.188.167.245]) by smtp.gmail.com with ESMTPSA id k18sm207268lfg.217.2022.02.18.02.18.04 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 18 Feb 2022 02:18:04 -0800 (PST) Date: Fri, 18 Feb 2022 13:18:03 +0300 From: Sergey Matyukevich To: Arnd Bergmann Cc: Linus Torvalds , Christoph Hellwig , linux-arch@vger.kernel.org, linux-mm@kvack.org, linux-api@vger.kernel.org, arnd@arndb.de, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk, linux@armlinux.org.uk, will@kernel.org, guoren@kernel.org, bcain@codeaurora.org, geert@linux-m68k.org, monstr@monstr.eu, tsbogend@alpha.franken.de, nickhu@andestech.com, green.hu@gmail.com, dinguyen@kernel.org, shorne@gmail.com, deller@gmx.de, mpe@ellerman.id.au, peterz@infradead.org, mingo@redhat.com, mark.rutland@arm.com, hca@linux.ibm.com, dalias@libc.org, davem@davemloft.net, richard@nod.at, x86@kernel.org, jcmvbkbc@gmail.com, ebiederm@xmission.com, akpm@linux-foundation.org, ardb@kernel.org, linux-alpha@vger.kernel.org, linux-snps-arc@lists.infradead.org, linux-csky@vger.kernel.org, linux-hexagon@vger.kernel.org, linux-ia64@vger.kernel.org, linux-m68k@lists.linux-m68k.org, linux-mips@vger.kernel.org, openrisc@lists.librecores.org, linux-parisc@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-riscv@lists.infradead.org, linux-s390@vger.kernel.org, linux-sh@vger.kernel.org, sparclinux@vger.kernel.org, linux-um@lists.infradead.org, linux-xtensa@linux-xtensa.org Subject: Re: [PATCH v2 18/18] uaccess: drop maining CONFIG_SET_FS users Message-ID: References: <20220216131332.1489939-1-arnd@kernel.org> <20220216131332.1489939-19-arnd@kernel.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20220216131332.1489939-19-arnd@kernel.org> Precedence: bulk List-ID: X-Mailing-List: linux-api@vger.kernel.org Hi Arnd, > From: Arnd Bergmann > > There are no remaining callers of set_fs(), so CONFIG_SET_FS > can be removed globally, along with the thread_info field and > any references to it. > > This turns access_ok() into a cheaper check against TASK_SIZE_MAX. > > With CONFIG_SET_FS gone, so drop all remaining references to > set_fs()/get_fs(), mm_segment_t and uaccess_kernel(). > > Signed-off-by: Arnd Bergmann Tested-by: Sergey Matyukevich # for arc changes Regards, Sergey