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 4D7B8C4332F for ; Wed, 23 Nov 2022 17:17:30 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S238843AbiKWRR2 (ORCPT ); Wed, 23 Nov 2022 12:17:28 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:37708 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S239172AbiKWRRX (ORCPT ); Wed, 23 Nov 2022 12:17:23 -0500 Received: from mail-pj1-x1036.google.com (mail-pj1-x1036.google.com [IPv6:2607:f8b0:4864:20::1036]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 902DF59FD9; Wed, 23 Nov 2022 09:17:22 -0800 (PST) Received: by mail-pj1-x1036.google.com with SMTP id q96-20020a17090a1b6900b00218b8f9035cso2406992pjq.5; Wed, 23 Nov 2022 09:17:22 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=in-reply-to:content-disposition:mime-version:references:message-id :subject:cc:to:from:date:sender:from:to:cc:subject:date:message-id :reply-to; bh=jBz/jPEo0AdygTb0AMG6NqgeBrl1ABCdg1oxZbrfO3k=; b=c0ud+PEDpPrVVxb2HtgXI/Cy/uAjLetHga7MsVSR0VVQeQKxY2YLimB9yXCvuNQvW3 nOxOU2OgeEMc5K/bz9SnyvZ7wOZb3EA5ey7ks9SXpi6Fe59HZ70cZvIEOOOAGqMHU3kp yGUOQyDbVMW2DpjTANip8QhOCPxkvmjSqWINcfvOI7BPFwTUWrx2BI9XwYMi94BVH9cI IlgjkVE1J1mHPovoNjiUWlUlqkR1HKziHkr77ZZHgyLU+xeawTkeBmPgPWYuVRCGb3Sk eyGWY8qYCdrB6eppQNYpVRoXOVlpmYn2xwC4FzruO4qJ2UYAaVw+srAC+lqFDLNQIygw KUCw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=in-reply-to:content-disposition:mime-version:references:message-id :subject:cc:to:from:date:sender:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=jBz/jPEo0AdygTb0AMG6NqgeBrl1ABCdg1oxZbrfO3k=; b=DawfP2z+ULUeJAmrB7MwLFFEuFfjk/Vthixf5cHLrQ2hLfKo+2c90cRjzpsst0cGG1 CiV64P5Bw9IMIStXRsW666IX7odLo28+/cxzsXJvTnnoOauZzV3sb7ZUg2NsiKVeDTi6 o5ZFS7ybVdqPja6cPTTDg72KimOxz2jvv3TuxkDyjrpLiJRJmu5OqO2CI6w3IlE/Y5dL QugHFWwDU0ex6IypqhYmZQd+CvyAco+ZSBTj6sx5boUOLLBiBegYaKq4rOcLoCzFF2pi b3VvK83pBG0ycfgaarGneBBzIxM3N2YhHUMxTq8L3EGEcCIiPednHCi8d8P4rkq1ZCj1 vasA== X-Gm-Message-State: ANoB5pmQ4ltqVeFEakRB0QfaC4CkbSw5AuBkGuFH1HSu9An4CvHnqYWc ZBaKI0OpEWZlhrrg+uI/D0g= X-Google-Smtp-Source: AA0mqf6GKGFrg/mjNcyN7caifjOfPclv+6AD8EFQHD+T7+p25AIciQWzA2B+ElxuoHBPpstN43zptg== X-Received: by 2002:a17:90a:5317:b0:213:95f:d37b with SMTP id x23-20020a17090a531700b00213095fd37bmr37026482pjh.60.1669223841989; Wed, 23 Nov 2022 09:17:21 -0800 (PST) Received: from localhost (2603-800c-1a02-1bae-a7fa-157f-969a-4cde.res6.spectrum.com. [2603:800c:1a02:1bae:a7fa:157f:969a:4cde]) by smtp.gmail.com with ESMTPSA id y10-20020a17090322ca00b0017bb38e4588sm14644241plg.135.2022.11.23.09.17.21 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 23 Nov 2022 09:17:21 -0800 (PST) Sender: Tejun Heo Date: Wed, 23 Nov 2022 07:17:20 -1000 From: Tejun Heo To: tianran_trtr@163.com Cc: lizefan.x@bytedance.com, hannes@cmpxchg.org, brauner@kernel.org, cgroups@vger.kernel.org, linux-kernel@vger.kernel.org, bpf@vger.kernel.org Subject: Re: [PATCH 1/1] cgroup: remove rcu_read_lock()/rcu_read_unlock() in critical section of spin_lock_irq() Message-ID: References: <20221123144514.21178-1-tianran_trtr@163.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20221123144514.21178-1-tianran_trtr@163.com> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, Nov 23, 2022 at 10:45:14PM +0800, tianran_trtr@163.com wrote: > From: Ran Tian > > spin_lock_irq() already disable preempt, so remove rcu_read_lock(). > > Signed-off-by: Ran Tian Applied to cgroup/for-6.2. Thanks. -- tejun