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=-12.0 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, MENTIONS_GIT_HOSTING,NICE_REPLY_A,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, USER_AGENT_SANE_1 autolearn=ham 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 39EEFC433E0 for ; Fri, 7 Aug 2020 00:03:49 +0000 (UTC) Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 152B82075A for ; Fri, 7 Aug 2020 00:03:49 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="Dds7RHJe" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 152B82075A Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=grimberg.me Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-nvme-bounces+linux-nvme=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=merlin.20170209; h=Sender:Content-Type: Content-Transfer-Encoding:Cc:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:In-Reply-To:MIME-Version:Date:Message-ID:From: References:To:Subject:Reply-To:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=LkQwCLzZte+1chL6zdub5EVP47XBCtb5nYTPhOh4MOU=; b=Dds7RHJeAtv8l4p5HRQ/qJj3u FRJxqV2FccOxS11ckyz6o511l+uVRjfCSNPsOc76shMj8yqxJKJsomFhDCbrdGtDcu+BRxXf9FCaK kXkrq6PCp3pH2gVFiy/mnBM5M9iefxoSAIPzABFDEaZk7Z5y/RiK+or3En2b0kS/0N0fPit7hEALT uAIFOnh+gD1VhAHWYhM6LYb1FcVlm5HqO0Ac8Z2xpwgoK3EBM0asTZm4yD54b2vzgBssYWLXhMMod fPnJVUpopvjvMu7NNnnMeqC606TbVzD8Tt+9MX9qooRmvN54ZbfVlH2LyXsXzrHsFH9QYilsT3Wk8 RCmWPqkTA==; Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1k3prJ-00073Q-CA; Fri, 07 Aug 2020 00:03:41 +0000 Received: from mail-wm1-f65.google.com ([209.85.128.65]) by merlin.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1k3prG-00072n-1N for linux-nvme@lists.infradead.org; Fri, 07 Aug 2020 00:03:39 +0000 Received: by mail-wm1-f65.google.com with SMTP id k20so218894wmi.5 for ; Thu, 06 Aug 2020 17:03:36 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:subject:to:cc:references:from:message-id:date :user-agent:mime-version:in-reply-to:content-language :content-transfer-encoding; bh=xhd8+U8ngWIZHNWQPMg7axj0NJjPdQAvScWt1odARyA=; b=ltUH0SuInSpY6a6/DXGPc8ZOb/ynbNBDFoguaBhERSzv+tlGcJTeGzescFnfw1/w3l DbG15HRcrLljfjuhFZGz1hiQ0i6Mr5t93kYDY4t9+QFFLYaJk+MispGfNdj6r+ryYzek gVXfGY7k86hhbCmmOr7O8SZcF3hTMh3wK3ykGaecFZvNJtLkIEYrHTCkarMvW9NYdDrE wMkNCf6uRRRXihNx9AYYEUJkWuNSYI/BK+GlQc6gWSIWw9jwfTzuXyPMd3q0kSVToFOY H0iKgRJKPgGNBQCuVeuE4wQqzC7W0sKcj6K7qmXM/WPQqnBDmqjKwTNLstJ/ZLI8nUj2 k/eA== X-Gm-Message-State: AOAM5324HjvRAb//nWJ++1wgCdTETA/kdW+UzDkQvhzPpvTTUV8VyrWZ zAk5vS3jpyd7i+UheBAKKHI8TD/r/6o= X-Google-Smtp-Source: ABdhPJwNKIVIlq3hvz5ea302H/a/KLUYiCR2buSY6rtNOqSdO1uR2qXTzfSrKQh9hKbq2W8idQV2Zw== X-Received: by 2002:a05:600c:258e:: with SMTP id 14mr9700588wmh.141.1596758615761; Thu, 06 Aug 2020 17:03:35 -0700 (PDT) Received: from ?IPv6:2601:647:4802:9070:d88d:857c:b14c:519a? ([2601:647:4802:9070:d88d:857c:b14c:519a]) by smtp.gmail.com with ESMTPSA id r22sm8487394wmh.45.2020.08.06.17.03.33 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 06 Aug 2020 17:03:35 -0700 (PDT) Subject: Re: [PATCH] nvme-core: fix io interrupt when work with dm-multipah To: "Meneghini, John" , Keith Busch , Chao Leng References: <20200727055818.21430-1-lengchao@huawei.com> <20200728111956.GA31546@lst.de> <6df01884-5498-0809-b358-0c9f7d775a73@huawei.com> <20200729055903.GC31113@lst.de> <43e5dee8-1a91-4d8b-fdb5-91f9679ddeb3@huawei.com> <8d01b123-478f-f057-1598-8283dd099b03@huawei.com> <20200805152905.GB1982647@dhcp-10-100-145-180.wdl.wdc.com> <255d55e3-f824-a968-e478-3efeda095696@huawei.com> <20200806142625.GA3075319@dhcp-10-100-145-180.wdl.wdc.com> <729820BC-5F38-4E22-A83A-862E57BAE201@netapp.com> From: Sagi Grimberg Message-ID: <9d641d7d-8b3f-759b-afa5-1e5d4be0ff82@grimberg.me> Date: Thu, 6 Aug 2020 17:03:30 -0700 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.10.0 MIME-Version: 1.0 In-Reply-To: <729820BC-5F38-4E22-A83A-862E57BAE201@netapp.com> Content-Language: en-US X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200806_200338_133353_A1693A02 X-CRM114-Status: GOOD ( 28.14 ) X-BeenThere: linux-nvme@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Christoph Hellwig , "linux-nvme@lists.infradead.org" , Hannes de , Ewan Milne Content-Transfer-Encoding: base64 Content-Type: text/plain; charset="utf-8"; Format="flowed" Sender: "Linux-nvme" Errors-To: linux-nvme-bounces+linux-nvme=archiver.kernel.org@lists.infradead.org Cj4+PiBKb2huLCBXYXQgZG8geW91IHRoaW5rIGFib3V0IGlmIGRlbGV0ZSB0cmFuc2xhdGUgTlZN RV9TQ19DTURfSU5URVJSVVBURUQKPj4+IHRvIEJMS19TVFNfVEFSR0VUPyBUaGFuayB5b3UuCj4g Cj4gSSB0aGluayByZXR1cm5pbmcgdG8gQkxLX1NUU19UQVJHRVQgZm9yIE5WTUVfU0NfQ01EX0lO VEVSUlVQVEVEIGFuZCBOVk1FX1NDX05TX05PVF9SRUFEWQo+IHdhcyBhIHBvdGVudGlhbGx5IG5v bi1iYWNrd2FyZHMgY29tcGF0aWJsZSBjaGFuZ2UgdGhhdCBLZWl0aCBtYWRlIGluIHJlc3BvbnNl IHRvIGEgcHJvYmxlbSB0aGF0Cj4gSSByZXBvcnRlZCBpbiBwYXRjaCAzNTAzOGJmZmE4N2RhLgo+ IAo+IGh0dHBzOi8vZ2l0Lmtlcm5lbC5vcmcvcHViL3NjbS9saW51eC9rZXJuZWwvZ2l0L3N0YWJs ZS9saW51eC5naXQvY29tbWl0Lz9pZD0zNTAzOGJmZmE4N2RhCj4gCj4gSSBkb27igJl0IHRoaW5r IGl0IHdvdWxkIGJlIGEgbWlzdGFrZSB0byBiYWNrIG91dCB0aGlzIGNoYW5nZS4gIFdlJ3ZlIGhh ZCBhIG51bWJlciBvZiBwcm9ibGVtcwo+IGluIHRoZSBkaXN0cmlidXRpb25zIHdpdGggZG0tbXAg YW5kIG90aGVyIGxlZ2FjeSBjb2RlIGdldHRpbmcgY29uZnVzZWQgYnkgdGhpcyBjaGFuZ2UuCgog RnJvbSB3aGF0IEkgc2VlIHRoZSBwb2ludCBvZiB0aGlzIGNoYW5nZSB3YXMgdG8gaGF2ZSB0aGVz ZSBzdGF0dXMgY29kZXMKdG8gZG8gZXhhY3RseSB3aGF0IHRoZXkgbmVlZCB0byBkbywgdXNlIHRo ZSBsb2NhbCByZXRyeSBmbG93LgoKPj4+IEJMS19TVFNfVEFSR0VUIG1lYW5zIHRhcmdldCBoYXMg Y3JpdGljYWwgZXJyb3IuIE5WTUVfU0NfQ01EX0lOVEVSUlVQVEVECj4+PiBqdXN0IG1lYW5zIHRh cmdldCBuZWVkIHJldHJ5IGlvLiBJdCBpcyBub3Qgc3VpdGFibGUgdG8gdHJhbnNsYXRlCj4+PiBO Vk1FX1NDX0NNRF9JTlRFUlJVUFRFRCB0byBCTEtfU1RTX1RBUkdFVC4gTWF5YmUgdHJhbnNsYXRl IHRvCj4+PiBCTEtfU1RTX0lPRVJSIGlzIGFsc28gbm90IHN1aXRhYmxlLCB3ZSBzaG91bGQgdHJh bnNsYXRlCj4+PiBOVk1FX1NDX0NNRF9JTlRFUlJVUFRFRCB0byBCTEtfU1RTX0FHQUlOLgo+Pj4g V2UgY2FuIGRvIGxpa2UgdGhpczoKPj4KPj4gQkxLX1NUU19BR0FJTiBpcyBhIGJhZCBjaG9pY2Ug YXMgd2UgdXNlIGl0IGZvciBjYWxscyB0aGF0IGJsb2NrIHdoZW4KPj4gdGhlIGNhbGxlcnMgYXNr ZWQgZm9yIG5vbi1ibG9ja2luZyBzdWJtaXNzaW9uLiAgSSdtIHJlYWxseSBub3Qgc3VyZQo+PiB3 ZSB3YW50IHRvIGNoYW5nZSBhbnl0aGluZyBoZXJlIC0gdGhlIGVycm9yIGRlZmluaXRpb24gY2xl YXJseSBzdGF0ZXMKPj4gaXQgaXMgbm90IGEgZmFpbHVyZSBidXQgYSByZXF1ZXN0IHRvIHJldHJ5 IGxhdGVyLgo+IAo+IEFncmVlZC4gVGhlIGhpc3RvcmljYWwgYmVoYXZpb3IgaW4gbnZtZS1jb3Jl IGhhcyBiZWVuIHRvIHJldHVybiBCTEtfU1RTX0lPRVJSIHN0YXR1cyBmb3IgYWxsIG5ldwo+IG9y IHVua25vd24gTlZNZSBlcnJvcnMuCgpXaGljaCBpcyB0aGUgY29ycmVjdCB0aGluZyB0byBkby4K Cj4g77u/LiAgIE9uIDgvNi8yMCwgMTA6MjYgQU0sICJLZWl0aCBCdXNjaCIgPGtidXNjaEBrZXJu ZWwub3JnPiB3cm90ZToKPiAKPiAgICAgID4gT24gVGh1LCBBdWcgMDYsIDIwMjAgYXQgMDE6NTI6 NDJQTSArMDgwMCwgQ2hhbyBMZW5nIHdyb3RlOgo+ICAgICAgPiBOVk1FX1NDX0xCQV9SQU5HRSBz aG91bGQgZmFpbGZhc3QsIGJlY2F1c2UgcmV0cnkgY2FuIG5vdCBzdWNjZXNzLgo+IAo+ICAgICAg VGhlIEROUiBiaXQgaXMgaG93IE5WTWUgY29udmV5cyBzdWNoIHRoaW5ncy4KPiAKPiBJIHRoaW5r IHRoYXQgTlZNRV9TQ19MQkFfUkFOR0UgaGFzIGhpc3RvcmljYWxseSByZXR1cm5lZCBCTEtfU1RT X1RBUkdFVCBzbyB0aGF0Cj4gc2hvdWxkbid0IGJlIGNoYW5nZWQuICBJIGFncmVlIHRoYXQgRE5S IC0gYW5kIG5vdyB0aGUgbmV3IEFDUkUgbWVjaGFuaXNtIC0gaXMgd2hhdAo+IHNob3VsZCBjb250 cm9sIHRoZSBjb21tYW5kIHJldHJ5IGJlaGF2aW9yIGluIE5WTWUuCgpDb21wbGV0ZWx5IGFncmVl IGhlcmUgdG9vLgoKPiAgICAgID4gTlZNRV9TQ19OU19OT1RfUkVBRFkgbWF5IHJldHJ5IHN1Y2Nl c3MsIGJ1dCB0aGUgcHJvYmFsaXR5IGlzIHZlcnkgbG93Lgo+ICAgICAgPiBOVk1FX1NDX0NNRF9J TlRFUlJVUFRFRCBuZWVkIHJldHJ5LCBhY2NvcmRpbmcgdG8gcHJvdG9jb2wgZGVmaW5lLCByZXRy eSB3aWxsIHN1Y2Nlc3MuCj4gCj4gICAgICBJZiB0aGUgdXBwZXIgbGF5ZXJzIHNldCBhIHJlcXVl c3Qgc3VjaCB0aGF0ICJub3JldHJ5IiBpcyB0cnVlLCB0aGF0J3MKPiAgICAgIHRoZSBiZWhhdmlv ciB5b3UncmUgZ29pbmcgdG8gZ2V0LiBTcHJpbmtsaW5nIHNwZWNpYWwgZXhjZXB0aW9ucyBhcm91 bmQKPiAgICAgIGlzIG5vdCBhIGdvb2QgaWRlYS4KPiAKPiBJIGFncmVlLgoKSSBhbHNvIDEwMCUg YWdyZWUgaGVyZS4KCj4gSSB0aGluayB0aGUgcHJvYmxlbSBoZXJlIGlzIHRoYXQgdGhlIGN1cnJl bnQgQkxLX1NUUyBhbmQgRkFTVF9GQUlMIG1lY2hhbmlzbXMKPiB3ZXJlIGRlc2lnbmVkIHN1cHBv cnQgbGVnYWN5IHByb3RvY29scyBsaWtlIFNDU0kuICBUaGV5IGFzc3VtZSB0aGF0IGFsbCByZXRy eSBiZWhhdmlvciBpcwo+IGNvbnRyb2xsZWQgYnkgb3RoZXIgY29tcG9uZW50cyBpbiB0aGUgc3Rh Y2suICBOVk1lIGlzIHByZXNlbnRpbmcgbmV3IHByb3RvY29sIGZlYXR1cmVzCj4gYW5kIHNlbWFu dGljcyB3aGljaCBwcm9iYWJseSBjYW4ndCBiZSBlZmZlY3RpdmVseSBzdXBwb3J0ZWQgYnkgdGhv c2UgbGVnYWN5IEJMS19TVFMKPiBhbmQgRkFTVF9GQUlMIG1lY2hhbmlzbXMgd2l0aG91dCBwYXNz aW5nIG1vcmUgaW5mb3JtYXRpb24gdXAgdGhlIHN0YWNrLgoKTm90IHN1cmUgaG93IGdlbmVyaWMg dGhpcyBuZXcgYmxrIHN0YXR1cyB3b3VsZCBiZS4uIEl0IHdvdWxkIHByb2JhYmx5Cm1ha2UgYSBs b3QgbW9yZSBzZW5zZSBvZiB0aGVyZSBhcmUgb3RoZXIgY29uc3VtZXJzIGZvciBzdWNoIGEgc3Rh dHVzCmNvZGUuCgpNYXliZSB3ZSBjb3VsZCBzZXQgaXQgdG8gQkxLX1NUU19USU1FT1VUIHdpdGgg YSBiaWcgZmF0IGNvbW1lbnQgZm9yIHdoeQp3ZSBhcmUgZG9pbmcgdGhpcy4uLgoKX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX18KTGludXgtbnZtZSBtYWlsaW5n IGxpc3QKTGludXgtbnZtZUBsaXN0cy5pbmZyYWRlYWQub3JnCmh0dHA6Ly9saXN0cy5pbmZyYWRl YWQub3JnL21haWxtYW4vbGlzdGluZm8vbGludXgtbnZtZQo=