From patchwork Mon Apr 6 17:14:00 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kevin Wolf X-Patchwork-Id: 11475935 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id AB9BF92C for ; Mon, 6 Apr 2020 17:15:35 +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 39F2F248B9 for ; Mon, 6 Apr 2020 17:15:35 +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="WF3JdeaM" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 39F2F248B9 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+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Received: from localhost ([::1]:35450 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jLVLR-0000XP-UD for patchwork-qemu-devel@patchwork.kernel.org; Mon, 06 Apr 2020 13:15:33 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:57463) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jLVKj-0007zp-8s for qemu-devel@nongnu.org; Mon, 06 Apr 2020 13:14:50 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1jLVKh-0007pP-PY for qemu-devel@nongnu.org; Mon, 06 Apr 2020 13:14:48 -0400 Received: from us-smtp-delivery-1.mimecast.com ([207.211.31.120]:44262 helo=us-smtp-1.mimecast.com) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1jLVKh-0007p8-KI for qemu-devel@nongnu.org; Mon, 06 Apr 2020 13:14:47 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1586193286; 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=SUVDMuFQiiSGFXqV9zaSm1sQr72YJNjY2dkuiIDGQkY=; b=WF3JdeaMRiGTkrZi08q6H52An5Bnpgzbk6JoxFB1jxwek5nVcfhwLsROlTmbboSXo1lQ/W MznLpRhw3SoimCYLgWiOsOQ/+nO0PMUmMbQgq3JG/dOs50yQefmSwAS8ud42Dzyy5gSvdS 1FofU3cJZF416KJHw4DRNuhQwTxOsWU= 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-331-epxbA7niM36rgs2GbJNfzg-1; Mon, 06 Apr 2020 13:14:44 -0400 X-MC-Unique: epxbA7niM36rgs2GbJNfzg-1 Received: from smtp.corp.redhat.com (int-mx03.intmail.prod.int.phx2.redhat.com [10.5.11.13]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 3568D10832C6; Mon, 6 Apr 2020 17:14:09 +0000 (UTC) Received: from linux.fritz.box.com (ovpn-113-74.ams2.redhat.com [10.36.113.74]) by smtp.corp.redhat.com (Postfix) with ESMTP id 2450D121F35; Mon, 6 Apr 2020 17:14:05 +0000 (UTC) From: Kevin Wolf To: qemu-block@nongnu.org Subject: [PATCH for-5.0 v2 0/3] block: Fix blk->in_flight during blk_wait_while_drained() Date: Mon, 6 Apr 2020 19:14:00 +0200 Message-Id: <20200406171403.6761-1-kwolf@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.13 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 207.211.31.120 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+patchwork-qemu-devel=patchwork.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. 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 interfaces block: Fix blk->in_flight during blk_wait_while_drained() include/sysemu/block-backend.h | 1 - block/block-backend.c | 199 +++++++++++++++++++++------------ 2 files changed, 125 insertions(+), 75 deletions(-)