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 309D1C43334 for ; Fri, 22 Jul 2022 15:20:04 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235652AbiGVPUD (ORCPT ); Fri, 22 Jul 2022 11:20:03 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:37306 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235585AbiGVPUC (ORCPT ); Fri, 22 Jul 2022 11:20:02 -0400 Received: from mail-pj1-x1031.google.com (mail-pj1-x1031.google.com [IPv6:2607:f8b0:4864:20::1031]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 3BA1681B3A for ; Fri, 22 Jul 2022 08:20:02 -0700 (PDT) Received: by mail-pj1-x1031.google.com with SMTP id p6-20020a17090a680600b001f2267a1c84so6767300pjj.5 for ; Fri, 22 Jul 2022 08:20:02 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ziepe.ca; s=google; h=date:from:to:cc:subject:message-id:references:mime-version :content-disposition:content-transfer-encoding:in-reply-to; bh=H7PnM7CarmZXTSyzcvqwouZTq8D3FVNEzWH1mHVH5KE=; b=GwzknZsrIDuX1TJFyQO9TAilsZlP8pwgM60BoHLMqkqWpBWRZInWVw4aQbP5v0oJjE LiE9ZHq1hXGr75TTDvzvMKJyc1xNzkfKIs/HAnpErvYEvgIDlZ4FW2zzpClu71hcbLub Z2bEQIOTLfXKqFLhgtL/qcD59dB5fJoLgmu5n3LVnSvMRimf7vI188ZTzfUKbA9+txAV 6zCA6UEhMGq0H0o3RH7pAxkrsRoQrLn4ONFXj72Mcbe/KKl5Sssl3V9YIandEaXxbrtj IzLxSCKKqnfrqmB/9KJn2awV6yVs9V2/Fl8pC/Zn9IMeTBsZgMQjQ4PjW4ZZIO85axHf YsoQ== 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:content-transfer-encoding :in-reply-to; bh=H7PnM7CarmZXTSyzcvqwouZTq8D3FVNEzWH1mHVH5KE=; b=a50awqvt6E0ye8HWtwVed31t9FeB+8CYf0vFVJDVPN8Jn9mFCG9GhYoWmGP09UgUJJ Qr6jpj/2cFm+MRECxKv2ww9gA7LOhTFbfWA6RH5oCS7/tjOUX+D5qXKlqr/afv6MSRXO kjerdu90o6YTwCzlcjymN1C49WrvmlKOpd4zjDe9RYMxdp8BN5+2zQgXxWv2uLxj0eaU VuIs+xsHc3V4DV6CRhdgf2St47V2bmf5//N2D+5sJpz/VyESt+XsbdFUYgiGx6xxg1iC Alm8U+VC+ngxzob0NOxfeFGJ1s0bpUYUu+Dhiy+vLrxVnpsrbBecjO9fJwJ/LoYApG9e pX/A== X-Gm-Message-State: AJIora/v38DZY0KXVieiyWIvBzomTrsTgqWfptaOt0Lo8kcSPb7lrhDV 9Q5gi3g7Dbrb/5PJQ5jOjwWOFg== X-Google-Smtp-Source: AGRyM1vjLiucQ1dDdcUwr4YTVVnq/w6xskFvXY6lzf3Z0fB7rFcscRVCJ+6XQOJz8wqXbyRuAn2sBg== X-Received: by 2002:a17:90b:1b11:b0:1f2:2d70:70d7 with SMTP id nu17-20020a17090b1b1100b001f22d7070d7mr10639539pjb.59.1658503201752; Fri, 22 Jul 2022 08:20:01 -0700 (PDT) Received: from ziepe.ca (S0106a84e3fe8c3f3.cg.shawcable.net. [24.64.144.200]) by smtp.gmail.com with ESMTPSA id gt23-20020a17090af2d700b001f25244c663sm969482pjb.54.2022.07.22.08.20.01 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 22 Jul 2022 08:20:01 -0700 (PDT) Received: from jgg by jggl with local (Exim 4.94) (envelope-from ) id 1oEuRc-000FDw-2o; Fri, 22 Jul 2022 12:20:00 -0300 Date: Fri, 22 Jul 2022 12:20:00 -0300 From: Jason Gunthorpe To: "yangx.jy@fujitsu.com" Cc: Yanjun Zhu , "leon@kernel.org" , "linux-rdma@vger.kernel.org" , "rpearsonhpe@gmail.com" , Yi Zhang Subject: Re: [PATCHv6 1/4] RDMA/rxe: Fix dead lock caused by __rxe_add_to_pool interrupted by rxe_pool_get_index Message-ID: <20220722152000.GC55077@ziepe.ca> References: <20220422194416.983549-1-yanjun.zhu@linux.dev> <5c2c8590-4798-ab70-2a15-949ca245ddae@fujitsu.com> <921120a1-28fa-dd2a-b6fc-227faa3c8ace@linux.dev> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: Precedence: bulk List-ID: X-Mailing-List: linux-rdma@vger.kernel.org On Fri, Jul 22, 2022 at 03:14:25PM +0000, yangx.jy@fujitsu.com wrote: > On 2022/7/22 21:43, Yanjun Zhu wrote: > > Hi， Xiao > > > > Normally I applied this "RDMA/rxe: Fix dead lock caused by > > __rxe_add_to_pool interrupted by rxe_pool_get_index" patch > > > > series to fix this problem. And I am not sure if this problem is fixed > > by "[PATCH v16 2/2] RDMA/rxe: Convert read side locking to rcu". > > > > Zhu Yanjun > Hi Yanjun, > > I have confirmed that the problem has been fixed by: > [PATCH v16 2/2] RDMA/rxe: Convert read side locking to rcu Thanks! Jason