From patchwork Sun Nov 9 07:42:57 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ming Lei X-Patchwork-Id: 408523 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from lists.gnu.org (lists.gnu.org [IPv6:2001:4830:134:3::11]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 6C17C1400D2 for ; Sun, 9 Nov 2014 18:49:22 +1100 (AEDT) Received: from localhost ([::1]:37986 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1XnNFQ-000292-DN for incoming@patchwork.ozlabs.org; Sun, 09 Nov 2014 02:49:20 -0500 Received: from eggs.gnu.org ([2001:4830:134:3::10]:38097) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1XnNAF-0001cn-Ld for qemu-devel@nongnu.org; Sun, 09 Nov 2014 02:44:05 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1XnNA9-00016D-Jh for qemu-devel@nongnu.org; Sun, 09 Nov 2014 02:43:59 -0500 Received: from mail-pd0-f170.google.com ([209.85.192.170]:56412) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1XnNA9-000166-Dy for qemu-devel@nongnu.org; Sun, 09 Nov 2014 02:43:53 -0500 Received: by mail-pd0-f170.google.com with SMTP id z10so5909467pdj.1 for ; Sat, 08 Nov 2014 23:43:52 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=C8WZd/1pYTVvGtnTLBIYQ6h+asKVyKAbSUEj2MHB04I=; b=RNNwP8BtmQm8n+Qd0cMWjFuW7rk7RUceCIEm+qseaPZISG0M+lszMzJGPex9jhd0Ax KWejETXgtJm4VZVlkApXwOGT/0qC4Jnpqo6KDwO7aL8xL01/cXWqmn4ZVa5qYJuCukRP OjjuGkp5HxQQa38GIvs1lCoVLMek95zZ2M24pVDQwA+xErnJ30s8V6eVSTJ1FPhhd2Qo /gCfN5JTtMA+L3owS2sWP/m4Kl2yGYVQqJPYIcvu9bzJmLusOBiZMC0KTGnaVVBROa/m n+2/4vCZEyoyk+uVbjp77IB4Mmu54K/DL5cCBtxPDYElMoP95MZ8UZH/wB0L6XNZUht8 EWhQ== X-Received: by 10.70.4.164 with SMTP id l4mr161261pdl.137.1415519032887; Sat, 08 Nov 2014 23:43:52 -0800 (PST) Received: from localhost ([183.14.16.86]) by mx.google.com with ESMTPSA id qn8sm13116973pdb.90.2014.11.08.23.43.51 for (version=TLSv1.2 cipher=RC4-SHA bits=128/128); Sat, 08 Nov 2014 23:43:52 -0800 (PST) From: Ming Lei To: qemu-devel@nongnu.org, Peter Maydell , Paolo Bonzini , Stefan Hajnoczi , Kevin Wolf Date: Sun, 9 Nov 2014 15:42:57 +0800 Message-Id: <1415518978-2837-13-git-send-email-ming.lei@canonical.com> X-Mailer: git-send-email 1.7.9.5 In-Reply-To: <1415518978-2837-1-git-send-email-ming.lei@canonical.com> References: <1415518978-2837-1-git-send-email-ming.lei@canonical.com> X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 209.85.192.170 Cc: Ming Lei , Fam Zheng Subject: [Qemu-devel] [PATCH 12/13] block: introduce bdrv_aio_io_plug() and its pair X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org These two APIs are introduced for using AioContext wide IO submission as batch. Signed-off-by: Ming Lei --- block.c | 16 ++++++++++++++++ include/block/block.h | 3 +++ 2 files changed, 19 insertions(+) diff --git a/block.c b/block.c index dacd881..0200af0 100644 --- a/block.c +++ b/block.c @@ -5901,6 +5901,22 @@ void bdrv_io_unplug(BlockDriverState *bs) } } +bool bdrv_aio_io_plug(AioContext *aio_ctx) +{ + if (aio_ctx->master_aio_bs) { + bdrv_io_plug(aio_ctx->master_aio_bs); + return true; + } + return false; +} + +void bdrv_aio_io_unplug(AioContext *aio_ctx) +{ + if (aio_ctx->master_aio_bs) { + bdrv_io_unplug(aio_ctx->master_aio_bs); + } +} + void bdrv_flush_io_queue(BlockDriverState *bs) { BlockDriver *drv = bs->drv; diff --git a/include/block/block.h b/include/block/block.h index 13e4537..aae6b66 100644 --- a/include/block/block.h +++ b/include/block/block.h @@ -541,6 +541,9 @@ void bdrv_io_plug(BlockDriverState *bs); void bdrv_io_unplug(BlockDriverState *bs); void bdrv_flush_io_queue(BlockDriverState *bs); +bool bdrv_aio_io_plug(AioContext *aio_ctx); +void bdrv_aio_io_unplug(AioContext *aio_ctx); + BlockAcctStats *bdrv_get_stats(BlockDriverState *bs); #endif