From patchwork Thu May 20 22:33:51 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jan Kara X-Patchwork-Id: 12271451 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=-6.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, 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 A9A0AC433B4 for ; Thu, 20 May 2021 22:34:04 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 8E611613B6 for ; Thu, 20 May 2021 22:34:04 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231533AbhETWfZ (ORCPT ); Thu, 20 May 2021 18:35:25 -0400 Received: from mx2.suse.de ([195.135.220.15]:39198 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231466AbhETWfY (ORCPT ); Thu, 20 May 2021 18:35:24 -0400 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.221.27]) by mx2.suse.de (Postfix) with ESMTP id 8E356ABCD; Thu, 20 May 2021 22:34:01 +0000 (UTC) Received: by quack2.suse.cz (Postfix, from userid 1000) id 31B521F2C73; Fri, 21 May 2021 00:34:01 +0200 (CEST) From: Jan Kara To: Jens Axboe Cc: , Khazhy Kumykov , Paolo Valente , Jan Kara Subject: [PATCH 0/2] block: Fix deadlock when merging requests with BFQ Date: Fri, 21 May 2021 00:33:51 +0200 Message-Id: <20210520223353.11561-1-jack@suse.cz> X-Mailer: git-send-email 2.26.2 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-block@vger.kernel.org Hello, This patch series fixes a lockdep complaint and a possible deadlock that can happen when blk_mq_sched_try_insert_merge() merges and frees a request. Honza