From patchwork Thu Mar 8 11:18:26 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Peter Lieven X-Patchwork-Id: 10267691 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id F23A26016D for ; Thu, 8 Mar 2018 11:23:20 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id E380B2930E for ; Thu, 8 Mar 2018 11:23:20 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id D875229708; Thu, 8 Mar 2018 11:23:20 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.9 required=2.0 tests=BAYES_00,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from lists.gnu.org (lists.gnu.org [208.118.235.17]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 993082930F for ; Thu, 8 Mar 2018 11:23:19 +0000 (UTC) Received: from localhost ([::1]:38089 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ettdm-0008O2-D4 for patchwork-qemu-devel@patchwork.kernel.org; Thu, 08 Mar 2018 06:23:18 -0500 Received: from eggs.gnu.org ([2001:4830:134:3::10]:40285) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ettZJ-0004Wk-KU for qemu-devel@nongnu.org; Thu, 08 Mar 2018 06:18:42 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1ettZG-0001zN-E2 for qemu-devel@nongnu.org; Thu, 08 Mar 2018 06:18:41 -0500 Received: from mx-v6.kamp.de ([2a02:248:0:51::16]:34310 helo=mx01.kamp.de) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1ettZG-0001yV-4q for qemu-devel@nongnu.org; Thu, 08 Mar 2018 06:18:38 -0500 Received: (qmail 11094 invoked by uid 89); 8 Mar 2018 11:18:35 -0000 Received: from [195.62.97.192] by client-16-kamp (envelope-from , uid 89) with qmail-scanner-2010/03/19-MF (clamdscan: 0.99.4/24374. avast: 1.2.2/17010300. spamassassin: 3.4.1. 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Processed in 0.411733 secs); 08 Mar 2018 11:18:35 -0000 Received: from kerio.kamp.de ([195.62.97.192]) by mx01.kamp.de with ESMTPS (DHE-RSA-AES256-SHA encrypted); 8 Mar 2018 11:18:31 -0000 X-GL_Whitelist: yes X-Footer: a2FtcC5kZQ== Received: from submission.kamp.de ([195.62.97.28]) by kerio.kamp.de with ESMTPS (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256 bits)) for qemu-devel@nongnu.org; Thu, 8 Mar 2018 12:18:28 +0100 Received: (qmail 5257 invoked from network); 8 Mar 2018 11:18:29 -0000 Received: from lieven-vm.kamp-intra.net (HELO lieven-vm-neu) (relay@kamp.de@::ffff:172.21.12.69) by submission.kamp.de with ESMTPS (DHE-RSA-AES256-GCM-SHA384 encrypted) ESMTPA; 8 Mar 2018 11:18:29 -0000 Received: by lieven-vm-neu (Postfix, from userid 1060) id 6ACF2204D5; Thu, 8 Mar 2018 12:18:29 +0100 (CET) From: Peter Lieven To: qemu-devel@nongnu.org, qemu-block@nongnu.org Date: Thu, 8 Mar 2018 12:18:26 +0100 Message-Id: <1520507908-16743-4-git-send-email-pl@kamp.de> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1520507908-16743-1-git-send-email-pl@kamp.de> References: <1520507908-16743-1-git-send-email-pl@kamp.de> X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 2a02:248:0:51::16 Subject: [Qemu-devel] [PATCH 3/5] migration/block: rename MAX_INFLIGHT_IO to MAX_IO_BUFFERS X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: famz@redhat.com, stefanha@redhat.com, quintela@redhat.com, Peter Lieven , dgilbert@redhat.com, jjherne@linux.vnet.ibm.com Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" X-Virus-Scanned: ClamAV using ClamSMTP this actually limits (as the original commit mesage suggests) the number of I/O buffers that can be allocated and not the number of parallel (inflight) I/O requests. Signed-off-by: Peter Lieven Reviewed-by: Juan Quintela --- migration/block.c | 7 +++---- 1 file changed, 3 insertions(+), 4 deletions(-) diff --git a/migration/block.c b/migration/block.c index 87bb35c..41b95d1 100644 --- a/migration/block.c +++ b/migration/block.c @@ -36,7 +36,7 @@ #define MAX_IS_ALLOCATED_SEARCH (65536 * BDRV_SECTOR_SIZE) -#define MAX_INFLIGHT_IO 512 +#define MAX_IO_BUFFERS 512 //#define DEBUG_BLK_MIGRATION @@ -775,9 +775,8 @@ static int block_save_iterate(QEMUFile *f, void *opaque) while ((block_mig_state.submitted + block_mig_state.read_done) * BLOCK_SIZE < qemu_file_get_rate_limit(f) && - (block_mig_state.submitted + - block_mig_state.read_done) < - MAX_INFLIGHT_IO) { + (block_mig_state.submitted + block_mig_state.read_done) < + MAX_IO_BUFFERS) { blk_mig_unlock(); if (block_mig_state.bulk_completed == 0) { /* first finish the bulk phase */