From nobody Mon Nov 17 03:48:22 2025 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass(p=none dis=none) header.from=nongnu.org ARC-Seal: i=1; a=rsa-sha256; t=1602525119; cv=none; d=zohomail.com; s=zohoarc; b=V6IRcJzv1nXjU/gzJCtvRIFOzIIXiOaMTOwb1Qyb0QWH18GHGz+Nq6j8aZHv787f5on21uTSO/tEv/TLeIRCv9cPlMQdIJKKcpzr6ko3CeYgp5IJqnsWUKP9TBXIg/97osWb7DnbS+bkR2X7A/P1BJweRbgWUpUycc2tZIowT6U= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1602525119; h=Cc:Date:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:Message-ID:Reply-To:References:Sender:Subject:To; bh=RR+A75tjH+V8C0eKeEVJ5/QmNJGO6E5CSbZGDJfp7k4=; b=V4V/BsOMJqXfI9JZr2gM2sS4MhwGuPtU0cDX8iABY/+ZDiUQnUiH4MICLhvV8+2Le/qgNthcFkRSyomYKM+H399+medGbhAWYqGzJ1rmVaADgRsn9jxGc3cpwAKHAH/EFWj+A2+hl5ev+8hL8CYPQKOmv/pOLXE6N3YcQqJa/Rc= ARC-Authentication-Results: i=1; mx.zohomail.com; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass header.from= (p=none dis=none) header.from= Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1602525119930588.486248256841; Mon, 12 Oct 2020 10:51:59 -0700 (PDT) Received: from localhost ([::1]:43072 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1kS1zK-0006Jr-Oz for importer@patchew.org; Mon, 12 Oct 2020 13:51:58 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:59544) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kS1xK-0004TV-5M; Mon, 12 Oct 2020 13:49:54 -0400 Received: from relay.sw.ru ([185.231.240.75]:33944 helo=relay3.sw.ru) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kS1xI-0007pE-LV; Mon, 12 Oct 2020 13:49:53 -0400 Received: from [172.16.25.136] (helo=localhost.sw.ru) by relay3.sw.ru with esmtp (Exim 4.94) (envelope-from ) id 1kS1wL-0047iC-Tv; Mon, 12 Oct 2020 20:48:53 +0300 To: qemu-block@nongnu.org Cc: qemu-devel@nongnu.org, kwolf@redhat.com, mreitz@redhat.com, fam@euphon.net, stefanha@redhat.com, armbru@redhat.com, jsnow@redhat.com, libvir-list@redhat.com, eblake@redhat.com, den@openvz.org, vsementsov@virtuozzo.com, andrey.shinkevich@virtuozzo.com Subject: [PATCH v11 07/13] block: include supported_read_flags into BDS structure Date: Mon, 12 Oct 2020 20:43:19 +0300 Message-Id: <1602524605-481160-8-git-send-email-andrey.shinkevich@virtuozzo.com> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1602524605-481160-1-git-send-email-andrey.shinkevich@virtuozzo.com> References: <1602524605-481160-1-git-send-email-andrey.shinkevich@virtuozzo.com> Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=185.231.240.75; envelope-from=andrey.shinkevich@virtuozzo.com; helo=relay3.sw.ru X-detected-operating-system: by eggs.gnu.org: First seen = 2020/10/12 13:44:17 X-ACL-Warn: Detected OS = Linux 3.11 and newer [fuzzy] X-Spam_score_int: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 5.0 requ) BAYES_00=-1.9, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham 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: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" Reply-to: Andrey Shinkevich From: Andrey Shinkevich via Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Add the new member supported_read_flags to BlockDriverState structure. It will control the BDRV_REQ_PREFETCH flag set for copy-on-read operations. Signed-off-by: Andrey Shinkevich Reviewed-by: Max Reitz --- include/block/block_int.h | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/include/block/block_int.h b/include/block/block_int.h index f782737..a142867 100644 --- a/include/block/block_int.h +++ b/include/block/block_int.h @@ -873,6 +873,10 @@ struct BlockDriverState { /* I/O Limits */ BlockLimits bl; =20 + /* + * Flags honored during pread (so far: BDRV_REQ_PREFETCH) + */ + unsigned int supported_read_flags; /* Flags honored during pwrite (so far: BDRV_REQ_FUA, * BDRV_REQ_WRITE_UNCHANGED). * If a driver does not support BDRV_REQ_WRITE_UNCHANGED, those --=20 1.8.3.1