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=-3.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS 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 76177C2BBCA for ; Wed, 16 Dec 2020 02:48:49 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 41CD522D49 for ; Wed, 16 Dec 2020 02:48:49 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1725816AbgLPCs0 (ORCPT ); Tue, 15 Dec 2020 21:48:26 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:45146 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725782AbgLPCs0 (ORCPT ); Tue, 15 Dec 2020 21:48:26 -0500 Received: from ZenIV.linux.org.uk (zeniv.linux.org.uk [IPv6:2002:c35c:fd02::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 0528FC0613D6; Tue, 15 Dec 2020 18:47:46 -0800 (PST) Received: from viro by ZenIV.linux.org.uk with local (Exim 4.92.3 #3 (Red Hat Linux)) id 1kpMqs-001ZB0-7u; Wed, 16 Dec 2020 02:47:42 +0000 Date: Wed, 16 Dec 2020 02:47:42 +0000 From: Al Viro To: Sergey Temerkhanov Cc: linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH] fget: Do not loop with rcu lock held Message-ID: <20201216024742.GK3579531@ZenIV.linux.org.uk> References: <20201215164123.609980-1-s.temerkhanov@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20201215164123.609980-1-s.temerkhanov@gmail.com> Sender: Al Viro Precedence: bulk List-ID: X-Mailing-List: linux-fsdevel@vger.kernel.org On Tue, Dec 15, 2020 at 07:41:23PM +0300, Sergey Temerkhanov wrote: > Unlock RCU before running another loop iteration If you are able to keep it looping for a long time, I would really like to see the reproducer.