Message ID | 20210419073722.15351-10-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,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 19942C43619 for <linux-block@archiver.kernel.org>; Mon, 19 Apr 2021 07:37:59 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 0047D60FE9 for <linux-block@archiver.kernel.org>; Mon, 19 Apr 2021 07:37:58 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237882AbhDSHi1 (ORCPT <rfc822;linux-block@archiver.kernel.org>); Mon, 19 Apr 2021 03:38:27 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:39562 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S237925AbhDSHi0 (ORCPT <rfc822;linux-block@vger.kernel.org>); Mon, 19 Apr 2021 03:38:26 -0400 Received: from mail-ed1-x536.google.com (mail-ed1-x536.google.com [IPv6:2a00:1450:4864:20::536]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 44117C06138B for <linux-block@vger.kernel.org>; Mon, 19 Apr 2021 00:37:57 -0700 (PDT) Received: by mail-ed1-x536.google.com with SMTP id o20so13142558edc.7 for <linux-block@vger.kernel.org>; Mon, 19 Apr 2021 00:37:57 -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=Tt79F+G/2TAdJgUjgiaPsarv0YHhBXCEUblYqTOU24pMsZS1uagu3rgePN1XwY0LUx 9iqCU+ugCogltF8rd8YUAUEbED8m8B/8Q1goX2V4qTxTfFF1CiYs44dB6Gs1TOjSLVAL czdY+HBJp+eMsEiV3BzGIToqO7w5XlXeW7y86JQlFseaqMMFqPwJX7Z2DW7tzw7DcKh6 kATvEQZs+MZAmHr5gZXLYYmifwVjbfW4ZPiYB4M6vytzeLcjx+EdrvZ/fKN5IqezMpLW XM8CuhP0L+MYM34uHN+9m6NHF1PW/Sio0lBKzFO6HLg8bIx+1UmD9TDKP4kO4mE2f58S s20w== 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=NqVJICHIzbiHuXkY/bLBL4VF8TEQwMtwASe2SfhGT4rK9Z5H9IWuab1uAapimuonUD fMVT46PLjYGGR25O3uVPBOroVsQgxgJeGNHrVDbSAOkm2siLECVTIC60Kga6Zmkt1uiR zu2DsXnWQbebQ2QxEe0qIQPM5pE5U+ATIOfVTVGCrkr0oO0VkngD+fyim7/cdODUGii8 D+UIInAIE/8dyTCmyauPfU1AMPLeVo/IMxYcLX4bzAANbP7BzPJ7+k9OVNNI7h/V67HQ dU0E/QPgHDZEF1ba9WRg+R9eNF1HF68w6dweA23Sz7Wci4GTtE4G4nIws4FKXBn2Fv4k 2JIQ== X-Gm-Message-State: AOAM533j/O+stDYQmJ7Mm7heFF97NYA5f6lnoK8OdSPBGsOqsdsQuZ+X EQmeEyf0rKHl65NQZE4OUaX4LIZbgnQA7WAy X-Google-Smtp-Source: ABdhPJwGnrPSy6CHdKdWk1ZTBhMOP6j1FaF01cjyXkNWrLaKuBova+LDJbo0Zarphg4c9HFQXfxKkw== X-Received: by 2002:a05:6402:451:: with SMTP id p17mr9123397edw.223.1618817875831; Mon, 19 Apr 2021 00:37:55 -0700 (PDT) Received: from localhost.localdomain (ip5f5aeee5.dynamic.kabel-deutschland.de. [95.90.238.229]) by smtp.googlemail.com with ESMTPSA id g22sm8701833ejz.46.2021.04.19.00.37.55 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 19 Apr 2021 00:37:55 -0700 (PDT) From: Gioh Kim <gi-oh.kim@ionos.com> To: linux-block@vger.kernel.org, linux-doc@vger.kernel.org Cc: axboe@kernel.dk, akinobu.mita@gmail.com, corbet@lwn.net, 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: [PATCHv5 for-next 09/19] block/rnbd-srv: Prevent a deadlock generated by accessing sysfs in parallel Date: Mon, 19 Apr 2021 09:37:12 +0200 Message-Id: <20210419073722.15351-10-gi-oh.kim@ionos.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20210419073722.15351-1-gi-oh.kim@ionos.com> References: <20210419073722.15351-1-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); }