Message ID | 20210330073752.1465613-15-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,URIBL_BLOCKED, 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 46627C433F1 for <linux-block@archiver.kernel.org>; Tue, 30 Mar 2021 07:39:15 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 2D2B861990 for <linux-block@archiver.kernel.org>; Tue, 30 Mar 2021 07:39:15 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231337AbhC3Him (ORCPT <rfc822;linux-block@archiver.kernel.org>); Tue, 30 Mar 2021 03:38:42 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:40860 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231341AbhC3HiL (ORCPT <rfc822;linux-block@vger.kernel.org>); Tue, 30 Mar 2021 03:38:11 -0400 Received: from mail-ej1-x632.google.com (mail-ej1-x632.google.com [IPv6:2a00:1450:4864:20::632]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 9275EC061762 for <linux-block@vger.kernel.org>; Tue, 30 Mar 2021 00:38:09 -0700 (PDT) Received: by mail-ej1-x632.google.com with SMTP id kt15so23282308ejb.12 for <linux-block@vger.kernel.org>; Tue, 30 Mar 2021 00:38:09 -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=SoMSIcCp8+AqPcP3Tord2AzO8LTHhNxNANk75Scwquk=; b=ITFd70WEYwdOvjemh4iTNpEczrRqBt1NDOlkhgunqsWoHahUkm8TodeNTi5GypuQhN wrPtqU7l0MbgtK5gsHjRFMvAn9/3/afe73NUYM4XxmlmCnGVGC109612VlaFp4nCR9oJ qaJ7lxpU6p70FySP74iNxuQ3Fdukc49MTk3HGr2g1I2xkgRfWWHZNsvNn1HkhUovbURf YTvp7ynX1wKjzSYhgVvcANvHqNgwUNssbT6lROxmX6MDssNIk0X/EtgBdS1D8W2+U4/R OADz8I5RqWjHRz63voYCniM95aINh/pWZLvrTu3Shf113C54r1RAeUGWGK/nx8CcGmKB 0T3g== 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=SoMSIcCp8+AqPcP3Tord2AzO8LTHhNxNANk75Scwquk=; b=apq6RQvyPaAAArtxhOtohcOxM+G8+qn1goFa6DXn4biMuhCEfpYc99qH2647oHey/4 Q/p9NPmy49KpQ32wcuO/Dfc78I5xN/YbgwvZGoyviPgDe+YFH0w5R8HedtWp1Xo6/iKX 7JVX2D64oxBA3Y0Xfr+vY6+D9SBGwKlMPjqTO463Ofi5yvF0//3bPAuXZDCKZAjUB0dN v4+NXdg8qtUBsylAi0YS2Sd0j/xvMwzMO2LX28UG5YU6om+YK0JnC7wYuFkuXgCytNHm c1ShjXYTK7wq2EpX/S/7koHyHpP/vxT1uN3JFxKouge3xMzFpS6+Kj1LNYT5Ys8LuLtR w+Qg== X-Gm-Message-State: AOAM532zVQvfqPgMT4Qe8l2E5tTESiKv430CK89TmaIvlgLGX+JYRU2i nnrqGef721nB7wtmwujzGz8/OBvz0ipYpxiJ X-Google-Smtp-Source: ABdhPJxpN6jUprFr0lhe7Y6m7AVLX6BZuXwf+zjXZUTHGkpXjuPemXdbLpbBHNiqZ5tud1tMHdsT2g== X-Received: by 2002:a17:906:85b:: with SMTP id f27mr32597212ejd.414.1617089888132; Tue, 30 Mar 2021 00:38:08 -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 a3sm9556180ejv.40.2021.03.30.00.38.07 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 30 Mar 2021 00:38:07 -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: [PATCHv2 for-next 14/24] block/rnbd-srv: Prevent a deadlock generated by accessing sysfs in parallel Date: Tue, 30 Mar 2021 09:37:42 +0200 Message-Id: <20210330073752.1465613-15-gi-oh.kim@ionos.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20210330073752.1465613-1-gi-oh.kim@ionos.com> References: <20210330073752.1465613-1-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 895e9c313ff0..f284620ef0d3 100644 --- a/drivers/block/rnbd/rnbd-srv.c +++ b/drivers/block/rnbd/rnbd-srv.c @@ -340,7 +340,9 @@ 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); }