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=-0.6 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS 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 E5A01C2BB54 for ; Tue, 7 Apr 2020 12:14:30 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (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 B595A2063A for ; Tue, 7 Apr 2020 12:14:30 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="ghvK4xkU" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org B595A2063A Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:46364 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jLn7d-0005hV-Tf for qemu-devel@archiver.kernel.org; Tue, 07 Apr 2020 08:14:29 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:59341) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jLn6i-0004DQ-UQ for qemu-devel@nongnu.org; Tue, 07 Apr 2020 08:13:33 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1jLn6h-0007w5-Te for qemu-devel@nongnu.org; Tue, 07 Apr 2020 08:13:32 -0400 Received: from us-smtp-2.mimecast.com ([207.211.31.81]:35468 helo=us-smtp-delivery-1.mimecast.com) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1jLn6U-0007q5-1G for qemu-devel@nongnu.org; Tue, 07 Apr 2020 08:13:31 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1586261597; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding; bh=oEvCz3yhhcDH8yi0DAfu1xhasW4XpPF2rydImtpMQOE=; b=ghvK4xkUsHfQjqoVpHkXaPGiS/OYSEVeOIjZ6x5GqiFINMapIYShaPCb0wGaUPUo6NiYP7 Jm34iZOIjCAgMMcc2HbvndK0FcTMFH1vBoXi1bSIQTrqfJ4TtT7ecVCESxZVOt1Igiv/35 lbQsrRdo9I9vOFs++0Y8y4HtCO/WD8A= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-163-PzR4tiaYMQ-lib4HQXw81A-1; Tue, 07 Apr 2020 08:13:16 -0400 X-MC-Unique: PzR4tiaYMQ-lib4HQXw81A-1 Received: from smtp.corp.redhat.com (int-mx07.intmail.prod.int.phx2.redhat.com [10.5.11.22]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 86A94A0CBF; Tue, 7 Apr 2020 12:13:14 +0000 (UTC) Received: from linux.fritz.box.com (ovpn-113-253.ams2.redhat.com [10.36.113.253]) by smtp.corp.redhat.com (Postfix) with ESMTP id DD86C100164D; Tue, 7 Apr 2020 12:13:09 +0000 (UTC) From: Kevin Wolf To: qemu-block@nongnu.org Subject: [PATCH for-5.0 v3 0/3] block: Fix blk->in_flight during blk_wait_while_drained() Date: Tue, 7 Apr 2020 14:12:56 +0200 Message-Id: <20200407121259.21350-1-kwolf@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.84 on 10.5.11.22 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: quoted-printable X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 207.211.31.81 X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: kwolf@redhat.com, vsementsov@virtuozzo.com, s.reiter@proxmox.com, qemu-devel@nongnu.org, dietmar@proxmox.com, stefanha@redhat.com, mreitz@redhat.com, t.lamprecht@proxmox.com Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" This fixes deadlocks when draining a BlockBackend in an iothread that receives new requests at the same time. v3: - Call blk_inc/dec_in_flight() in blk_prw() rather than inside the coroutines [Max] v2: - Rework the whole thing so that direct callers of blk_co_*() aren't broken after the series [Max] Kevin Wolf (3): block-backend: Reorder flush/pdiscard function definitions block: Increase BB.in_flight for coroutine and sync interfaces block: Fix blk->in_flight during blk_wait_while_drained() include/sysemu/block-backend.h | 1 - block/block-backend.c | 206 ++++++++++++++++++++------------- 2 files changed, 128 insertions(+), 79 deletions(-) --=20 2.20.1