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 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 847EAC433F5 for ; Tue, 26 Oct 2021 16:31:25 +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 35AB660527 for ; Tue, 26 Oct 2021 16:31:25 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org 35AB660527 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=nongnu.org Received: from localhost ([::1]:52410 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1mfPMC-0001S3-5f for qemu-devel@archiver.kernel.org; Tue, 26 Oct 2021 12:31:24 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:33280) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1mfPF5-0007Nr-IW for qemu-devel@nongnu.org; Tue, 26 Oct 2021 12:24:03 -0400 Received: from us-smtp-delivery-124.mimecast.com ([170.10.133.124]:32097) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1mfPF3-00039Q-7C for qemu-devel@nongnu.org; Tue, 26 Oct 2021 12:24:03 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1635265440; 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=EjBjjQVr7KL1zsDJKefz8qMA2NcxkphUB8cXf94FlNc=; b=GyZ1T74klLFBIvO6XpqcrVz1BMgrdO63DsUrHG1U5o4JOSDWfajuAsXinUFG9q2+XcaL1L LpJRr0i+2/sizmSmbPS75fbB96q/P87brGrqfgNc3ZL6c4GXgbpYf4vHtR2QLnc24CPZX+ B8SJi0TLMEApq4Kv9g4rnWDYedA1f5Q= 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-522-FOZGfhcXO3G4macDl0zZOg-1; Tue, 26 Oct 2021 12:23:57 -0400 X-MC-Unique: FOZGfhcXO3G4macDl0zZOg-1 Received: from smtp.corp.redhat.com (int-mx01.intmail.prod.int.phx2.redhat.com [10.5.11.11]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 4B4DB1397B03; Tue, 26 Oct 2021 16:23:56 +0000 (UTC) Received: from steredhat.redhat.com (unknown [10.39.194.96]) by smtp.corp.redhat.com (Postfix) with ESMTP id 5062B19811; Tue, 26 Oct 2021 16:23:47 +0000 (UTC) From: Stefano Garzarella To: qemu-devel@nongnu.org Subject: [PATCH v2 0/3] linux-aio: allow block devices to limit aio-max-batch Date: Tue, 26 Oct 2021 18:23:43 +0200 Message-Id: <20211026162346.253081-1-sgarzare@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.11 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=sgarzare@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 8bit Received-SPF: pass client-ip=170.10.133.124; envelope-from=sgarzare@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -27 X-Spam_score: -2.8 X-Spam_bar: -- X-Spam_report: (-2.8 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_LOW=-0.7, RCVD_IN_MSPIKE_H2=-0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=unavailable autolearn_force=no X-Spam_action: no action 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: Kevin Wolf , qemu-block@nongnu.org, Markus Armbruster , Hanna Reitz , Stefan Hajnoczi , Eric Blake Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" v1: https://lore.kernel.org/qemu-devel/20210923143100.182979-1-sgarzare@redhat.com v2: - @aio-max-batch documentation rewrite [Stefan, Kevin] - added Stefan and Kevin R-b tags Commit d7ddd0a161 ("linux-aio: limit the batch size using `aio-max-batch` parameter") added a way to limit the batch size of Linux AIO backend for the entire AIO context. The same AIO context can be shared by multiple devices, so latency-sensitive devices may want to limit the batch size even more to avoid increasing latency. This series add the `aio-max-batch` option to the file backend, and use it in laio_co_submit() and laio_io_unplug() to limit the Linux AIO batch size more than the limit set by the AIO context. Stefano Garzarella (3): file-posix: add `aio-max-batch` option linux-aio: add `dev_max_batch` parameter to laio_co_submit() linux-aio: add `dev_max_batch` parameter to laio_io_unplug() qapi/block-core.json | 7 +++++++ include/block/raw-aio.h | 6 ++++-- block/file-posix.c | 14 ++++++++++++-- block/linux-aio.c | 38 +++++++++++++++++++++++++++----------- 4 files changed, 50 insertions(+), 15 deletions(-) -- 2.31.1