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=-8.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=unavailable 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 2256EC4332E for ; Wed, 3 Mar 2021 04:10:22 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id F3A6764E6F for ; Wed, 3 Mar 2021 04:10:21 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1352571AbhCCDz6 (ORCPT ); Tue, 2 Mar 2021 22:55:58 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:44924 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1349600AbhCBKmh (ORCPT ); Tue, 2 Mar 2021 05:42:37 -0500 Received: from mail-ed1-x531.google.com (mail-ed1-x531.google.com [IPv6:2a00:1450:4864:20::531]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 36F33C06178B for ; Tue, 2 Mar 2021 02:32:13 -0800 (PST) Received: by mail-ed1-x531.google.com with SMTP id s8so24539148edd.5 for ; Tue, 02 Mar 2021 02:32:13 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bytedance-com.20150623.gappssmtp.com; s=20150623; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc:content-transfer-encoding; bh=aHiivO66cBlvi2omwE76dmO7GHvGNT96Cj5+nu42PGg=; b=I3uOr+q0RQRgiQgCS80GYwUSkTQnW9aaq4gmyDrvqidORji3JQgKK5Gk6gXKJx4JN6 Kdw/xd8w7zZL+nnUxuSZdMOnoz9eiyotnG5IKpT+Ud7NlWqTrt6YooiYlRRVi02JJMMr 4VYaUBZaNWsU4GxWuGvtyzk3NIV5/ZljDQKPkS7H3te3Wt54mTXFOXDjC2JdrQuaoHhI QtV+wrlNU3ReiikOrRqrSIVv+puzwruHdJKxH4oXnS6xb8gPwknLRq7pC4a/EOpknuQO +skcqqGEbtLCSfYhVvBfpY3tTCreILgdD5pwsxFpWM3+87sOSq+Bypy84M9wCvwAd7bE Twvg== 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:content-transfer-encoding; bh=aHiivO66cBlvi2omwE76dmO7GHvGNT96Cj5+nu42PGg=; b=hItwfooYEgkNxhfvJPGJqlEETCs/EAHSz4cCe53hiagJnF32X2Fp5fWcwcbv02aMLc 149XZRMGhwXPkHYOYqZiqVqhEDyPeYfDKWwx5bV/pKqXMTMR3Ta5E3KVFBtQ1Vbi7X9A lR5waIiQO599OygXERevuJ/Gl3vvib15vl6zUOg8lgrguoixUwbXB1i9LMPd9L9CsPMz DMYwmJe3iFPUBVdTel40sCWKtS0HB91lkcrFxgHuhv5O/tMo3pgRR/0NNOBO2PVO5iW6 H4jmsWkovLnbabyuZQECuNu6VJC12WzzP960jMdKxVILTOXRyoS+7giKZNOC3l+55Djm 8QWA== X-Gm-Message-State: AOAM531cW6IOi9jR4G0TuIkgIhqAxjwuV5Gez6Y0hEiqwPTn8+t5ib0d WmLyWrY4Up0arB8vVh0grLCOQeyiAb9/RjOxjM1R X-Google-Smtp-Source: ABdhPJzlkbp8GXrzTY+Abm6IQL/bSnnCkhRKckW2ZUkdVHBw9ERA3un1YwUAbOK+Sq4gG6u3AkoG0LR4jYRsbg5g92Q= X-Received: by 2002:a05:6402:180b:: with SMTP id g11mr10194555edy.195.1614681131866; Tue, 02 Mar 2021 02:32:11 -0800 (PST) MIME-Version: 1.0 References: <20210223115048.435-1-xieyongji@bytedance.com> <20210223115048.435-2-xieyongji@bytedance.com> <22e96bd6-0113-ef01-376e-0776d7bdbcd8@redhat.com> In-Reply-To: <22e96bd6-0113-ef01-376e-0776d7bdbcd8@redhat.com> From: Yongji Xie Date: Tue, 2 Mar 2021 18:32:01 +0800 Message-ID: Subject: Re: Re: [RFC v4 01/11] eventfd: Increase the recursion depth of eventfd_signal() To: Jason Wang Cc: "Michael S. Tsirkin" , Stefan Hajnoczi , Stefano Garzarella , Parav Pandit , Bob Liu , Christoph Hellwig , Randy Dunlap , Matthew Wilcox , viro@zeniv.linux.org.uk, Jens Axboe , bcrl@kvack.org, Jonathan Corbet , virtualization@lists.linux-foundation.org, netdev@vger.kernel.org, kvm@vger.kernel.org, linux-aio@kvack.org, linux-fsdevel@vger.kernel.org Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org On Tue, Mar 2, 2021 at 2:44 PM Jason Wang wrote: > > > On 2021/2/23 7:50 =E4=B8=8B=E5=8D=88, Xie Yongji wrote: > > Increase the recursion depth of eventfd_signal() to 1. This > > is the maximum recursion depth we have found so far. > > > > Signed-off-by: Xie Yongji > > > Acked-by: Jason Wang > > It might be useful to explain how/when we can reach for this condition. > Fine. Thanks, Yongji