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=-7.0 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT 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 58092C433C1 for ; Mon, 22 Mar 2021 07:38:08 +0000 (UTC) Received: from desiato.infradead.org (desiato.infradead.org [90.155.92.199]) (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 CA4166196F for ; Mon, 22 Mar 2021 07:38:07 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org CA4166196F Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=lst.de 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=desiato.20200630; h=Sender:Content-Transfer-Encoding :Content-Type:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:MIME-Version:Message-Id:Date:Subject:Cc:To:From: Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From:Resent-Sender :Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References:List-Owner; bh=KzCVHXch4XpLpL6m6L8oewu/IQ4sfiOLKqTN6DOVVEA=; b=JuUXTHUgQ+LJkbbtkOM+MLcZ6/ nHMTs3d1dnFbEoQPhW28as6RQcAfcp4dI1pkV+oEyE5nv1z1wboKy8LZWGxlDQUxZwKJkjaDEjC0N QFiz2ekTRSdXydur7RRbgd0sc1f2UOSYEB2e3AyTmWRLtAc2txjrHyVpH9T65bOiLkYLNk1pEVong qqmZAsYsTBJjyt0SdRJIfbL3auqQ0v3qnhJSIBPHwEJ1IaaSFGBifnW1xy89NePhpPu6G7Ys8efAp d4szkzkkPdFZvIs1SplUzXE6ERFdZr0fhUAiLtoBOtNfjy2MniRdqvxJTQ/TNkaOknHh2qFJ22gud 7tSbxx4w==; Received: from localhost ([::1] helo=desiato.infradead.org) by desiato.infradead.org with esmtp (Exim 4.94 #2 (Red Hat Linux)) id 1lOF8I-00B5ZX-Gv; Mon, 22 Mar 2021 07:37:50 +0000 Received: from casper.infradead.org ([2001:8b0:10b:1236::1]) by desiato.infradead.org with esmtps (Exim 4.94 #2 (Red Hat Linux)) id 1lOF8D-00B5ZQ-IN for linux-nvme@desiato.infradead.org; Mon, 22 Mar 2021 07:37:45 +0000 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=casper.20170209; h=Content-Transfer-Encoding:MIME-Version: Message-Id:Date:Subject:Cc:To:From:Sender:Reply-To:Content-Type:Content-ID: Content-Description:In-Reply-To:References; bh=iWYlea68c8FzuH+4tg8qDv1Nl0eXO516A6zNqzfMHec=; b=IUo/T/VIuycDnv4C9zh3g+gFlr JpV+bUzBRtGfp7q9hGpG5SiqiPHsLm29rmyJoTKXrguZAttgLKY0KJM06GoqkvQNfcyKmWcrZP0CO eTLZJbRnmNk5y78ZkpEFK1e0uyU0cIpBd/8e5buzLEG36d7K6GD+qkil/62qJ2FuS8cW/CcJCr5yX kJUsaHGZ5NzTD/LjtWMLm9+Jk8iVun58aqQNBX7BVHvQC9vlLzj7yLoybBtvcivoSpRJQqA2KJkr2 5wi/20P7WqGk0Nh857z2gPpt3DqkBiOKQ9PO262335k3eeZONdANkGdFjhP5JxVOWZwbfpegAhxX6 +aE+1AAg==; Received: from [2001:4bb8:180:4ea2:5b87:a441:96f6:10e9] (helo=localhost) by casper.infradead.org with esmtpsa (Exim 4.94 #2 (Red Hat Linux)) id 1lOF7v-0089pY-BI; Mon, 22 Mar 2021 07:37:33 +0000 From: Christoph Hellwig To: Sagi Grimberg , Keith Busch , Jens Axboe Cc: Chao Leng , linux-block@vger.kernel.org, linux-nvme@lists.infradead.org Subject: fix nvme-tcp and nvme-rdma controller reset hangs when using multipath Date: Mon, 22 Mar 2021 08:37:24 +0100 Message-Id: <20210322073726.788347-1-hch@lst.de> X-Mailer: git-send-email 2.30.1 MIME-Version: 1.0 X-SRS-Rewrite: SMTP reverse-path rewritten from by casper.infradead.org. See http://www.infradead.org/rpr.html X-BeenThere: linux-nvme@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "Linux-nvme" Errors-To: linux-nvme-bounces+linux-nvme=archiver.kernel.org@lists.infradead.org Hi all, this series attempts to fix the nvme queue freeze deadlock Sagi reported. It needs a little help from the block layer so that we can avoid blocking on the queue free percpu_ref without forcing the entire NOWAIT flag and thus also not waiting for tag allocations. _______________________________________________ Linux-nvme mailing list Linux-nvme@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-nvme