Message ID | 20210406070716.168541-10-gi-oh.kim@ionos.com (mailing list archive) |
---|---|
State | New, archived |
Headers | show
Return-Path: <linux-block-owner@kernel.org> 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=-18.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT 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 CD7F7C43462 for <linux-block@archiver.kernel.org>; Tue, 6 Apr 2021 07:07:30 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id AB4B9613B7 for <linux-block@archiver.kernel.org>; Tue, 6 Apr 2021 07:07:30 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S244157AbhDFHHg (ORCPT <rfc822;linux-block@archiver.kernel.org>); Tue, 6 Apr 2021 03:07:36 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:58932 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S244161AbhDFHHf (ORCPT <rfc822;linux-block@vger.kernel.org>); Tue, 6 Apr 2021 03:07:35 -0400 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 BCFB4C06174A for <linux-block@vger.kernel.org>; Tue, 6 Apr 2021 00:07:27 -0700 (PDT) Received: by mail-ed1-x531.google.com with SMTP id p4so4945221edr.2 for <linux-block@vger.kernel.org>; Tue, 06 Apr 2021 00:07:27 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ionos.com; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=FGH+Ljl4s6SmZtr/mbRqxMi5iJCFYf0z8DPotTgMP2c=; b=hczZH0CqXAUh4LWKFyZNcWcaOiFK88nParQCciRud6pvWm8Nxir6qEuhCEuTp6jFYX 3NHG+20jY0hdjFgYt2BR7syxk6KbQk9aA5HsOOfbSgd6yqDUhY7CAWR+lMY1LK1RohDp hK1i5/yGtIkGnDju+fe9EXiSdV1Y2qR0PlO/KpPGUzhlWJFeAc0L1MXqP+32cfwPtNuf WG5QWbUvKTwyR6opQzDLz0i0CGaKJ8Pt5LEip/enHkOVrWfDnGx+KQJwg875w86qaGKB j/Xa+ma4Xa1S0Aqk+/Nfqt8sswYPxgYWylq9Gk/7oBQ9oG768+iTEGjHHD+EUu8sY1DG 75fA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=FGH+Ljl4s6SmZtr/mbRqxMi5iJCFYf0z8DPotTgMP2c=; b=Cf88r5U8I/KbPsiGSK5PKhUU9bcENXXu2uEq7pvNVQDxYC7oBL2FxKBY/cW4L6Y9pK cmGWASk/eCEbn75mz+lchdXWU6ZlewVFFs15G6Qel28SqjCCd0OKUPNaUDWrpubrK1I/ Th5Rg8RktyJsZf/1M3RtE4kskvdN5yCg1wQmJAHZlzSbMSCZub390WMAzZ8XpcOG0aKG VP0jxc4JUIeyJZ6PbTlgI9gWcRKEzE60LjqvR1PjGoSKnSWEDQdk7GMXGgKC7nmggJQr fxdNvtFFUKTMoAQVo71sCPkiyzB570pEY55xrQ9+BImRMaS1gshoiDbU2ny2UvhQC6cF s9Og== X-Gm-Message-State: AOAM5310SX1QnVTXIvJnG6e5/cnng4wD1dgUHsoG5Lu1z/bdHlQ7bl2D jG9IHJetaUSkElr4SZK7KlGzCmLxms3150Th X-Google-Smtp-Source: ABdhPJzo55eFGexFJ4OQtjswzKl2/hESbYXS4DXd2iLhGXrPlJRZ0VPFUR1UlcO/nwyA51bZo9haxA== X-Received: by 2002:a05:6402:4388:: with SMTP id o8mr22685282edc.262.1617692846361; Tue, 06 Apr 2021 00:07:26 -0700 (PDT) Received: from gkim-laptop.fkb.profitbricks.net (ip5f5aeee5.dynamic.kabel-deutschland.de. [95.90.238.229]) by smtp.googlemail.com with ESMTPSA id rh6sm3976566ejb.39.2021.04.06.00.07.25 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 06 Apr 2021 00:07:26 -0700 (PDT) From: Gioh Kim <gi-oh.kim@ionos.com> To: linux-block@vger.kernel.org Cc: axboe@kernel.dk, hch@infradead.org, sagi@grimberg.me, bvanassche@acm.org, haris.iqbal@ionos.com, jinpu.wang@ionos.com, Gioh Kim <gi-oh.kim@cloud.ionos.com>, Gioh Kim <gi-oh.kim@ionos.com> Subject: [PATCHv3 for-next 09/19] block/rnbd-srv: Prevent a deadlock generated by accessing sysfs in parallel Date: Tue, 6 Apr 2021 09:07:06 +0200 Message-Id: <20210406070716.168541-10-gi-oh.kim@ionos.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20210406070716.168541-1-gi-oh.kim@ionos.com> References: <20210406070716.168541-1-gi-oh.kim@ionos.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: <linux-block.vger.kernel.org> X-Mailing-List: linux-block@vger.kernel.org |
Series |
Misc update for rnbd
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expand
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diff --git a/drivers/block/rnbd/rnbd-srv.c b/drivers/block/rnbd/rnbd-srv.c index a4fd9f167c18..1549a6361630 100644 --- a/drivers/block/rnbd/rnbd-srv.c +++ b/drivers/block/rnbd/rnbd-srv.c @@ -334,7 +334,9 @@ void rnbd_srv_sess_dev_force_close(struct rnbd_srv_sess_dev *sess_dev) struct rnbd_srv_session *sess = sess_dev->sess; sess_dev->keep_id = true; - mutex_lock(&sess->lock); + /* It is already started to close by client's close message. */ + if (!mutex_trylock(&sess->lock)) + return; rnbd_srv_destroy_dev_session_sysfs(sess_dev); mutex_unlock(&sess->lock); }