From nobody Thu Jan 8 13:17:06 2026 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=fail; 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=1767025141; cv=none; d=zohomail.com; s=zohoarc; b=d+SGB5topqJziH+XW6Km2tCUZgcCT9kxosOtm/4Mi8nkqJOu4oXe7Qo0Xd3FUZImDKNt54cxWDPR5L2Xab6lBcjsGxyfB64yU8RgCucwIV/76CkXfRCgRSVlr6gPDRYISkc+EB+l4b6gaQrPIqhYrDbgUfU5U9+X+QdI5Epih5I= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1767025141; h=Content-Transfer-Encoding:Cc:Cc:Date:Date:From:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:Reply-To:Reply-To:References:Sender:Subject:Subject:To:To:Message-Id; bh=RHQ06Ay9ayNDOTQUjI5mQsuceKf7xehyCQI6bZPtdsc=; b=FQ33CQyBKEgeEsc0z1vXqBju4bHrOjXkvBs5iE1ZKM0vJLBVbwGUhsVngoGfz6UWiX9eZtpPGblxd0DQdWpMR0sv762spuaVy45ABz3d+6V64U4Xl12hBcTwsnVZmmGSYyugZHJY9K8kcHY2e0f3PdAw6QCtM5epkqcRdYXHqjA= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=fail; 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) Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 176702514137965.56942632970708; Mon, 29 Dec 2025 08:19:01 -0800 (PST) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1vaFwY-00025c-0L; Mon, 29 Dec 2025 11:18:02 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1vaFwL-0001wm-0M; Mon, 29 Dec 2025 11:17:49 -0500 Received: from relay.virtuozzo.com ([130.117.225.111]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1vaFwI-0005OJ-Gi; Mon, 29 Dec 2025 11:17:48 -0500 Received: from [10.193.1.107] (helo=dev007.aci.vzint.dev) by relay.virtuozzo.com with esmtp (Exim 4.96) (envelope-from ) id 1vaFvu-00Apz0-2M; Mon, 29 Dec 2025 17:17:32 +0100 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=virtuozzo.com; s=relay; h=MIME-Version:Message-ID:Date:Subject:From: Content-Type; bh=RHQ06Ay9ayNDOTQUjI5mQsuceKf7xehyCQI6bZPtdsc=; b=RW8FMCwC5VpR dYwSz43w70zy7oPtzgsx83yk15U9jYxraNOalfXtQ7OLjoH+bXiM/hVbWNUeqt1i56k03P9YDoahy sEIEGshESIkcFMPDDUGI3wwm4Ptv8UaY+uPKuGZPm1q5fpnyRpK7xHqLOPyMPcf9mulazMr9rFLfT LzWOiFlr9hCCWtFWrVVY079YT00f53Sv61Ki/9g+96GODRsCys1PmAVVAsyu//kA8Y8I+su0uHv04 RXq2lS6DBNCE/W5GAkM2/JhHsoN9mKSJ3pKdq24mTmudeTAUSO5JswEzU/f8xtYd9zSjzro/MQPmG JXGyvN5kPbi0rnqEGaiC/A==; To: qemu-block@nongnu.org, qemu-devel@nongnu.org, qemu-stable@nongnu.org Cc: den@openvz.org, Andrey Drobyshev , Kevin Wolf , Hanna Reitz Subject: [PATCH 1/3] block: create bdrv_advance_flush_gen() helper Date: Mon, 29 Dec 2025 19:07:43 +0300 Message-ID: <20251229161740.758800-2-den@openvz.org> X-Mailer: git-send-email 2.43.5 In-Reply-To: <20251229161740.758800-1-den@openvz.org> References: <20251229161740.758800-1-den@openvz.org> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable 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 (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: softfail client-ip=130.117.225.111; envelope-from=den@openvz.org; helo=relay.virtuozzo.com X-Spam_score_int: -34 X-Spam_score: -3.5 X-Spam_bar: --- X-Spam_report: (-3.5 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, RCVD_IN_DNSWL_MED=-2.3, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, RCVD_IN_VALIDITY_SAFE_BLOCKED=0.001, SPF_HELO_NONE=0.001, SPF_SOFTFAIL=0.665 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Reply-to: "Denis V. Lunev" From: "Denis V. Lunev" via Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: fail (Header signature does not verify) X-ZM-MESSAGEID: 1767025141542158500 Content-Type: text/plain; charset="utf-8" The patch creates helper to advance flush generation. Right now there is the only place which handles bs->write_gen, but this is going to be changed in the next patches. Unfortunately we need to precisely control the moment of flush() when BDRV_REQ_FUA is passed as a request flag. Generic processing inside bdrv_co_write_req_finish() is too late. Signed-off-by: Denis V. Lunev CC: Andrey Drobyshev CC: Kevin Wolf CC: Hanna Reitz --- block/io.c | 2 +- include/block/block_int-common.h | 5 +++++ 2 files changed, 6 insertions(+), 1 deletion(-) diff --git a/block/io.c b/block/io.c index d37da2e0ac5..f39ff862c11 100644 --- a/block/io.c +++ b/block/io.c @@ -2147,7 +2147,7 @@ bdrv_co_write_req_finish(BdrvChild *child, int64_t of= fset, int64_t bytes, =20 bdrv_check_request(offset, bytes, &error_abort); =20 - qatomic_inc(&bs->write_gen); + bdrv_advance_flush_gen(bs); =20 /* * Discard cannot extend the image, but in error handling cases, such = as diff --git a/include/block/block_int-common.h b/include/block/block_int-com= mon.h index 80c54a6d09f..67552463dbe 100644 --- a/include/block/block_int-common.h +++ b/include/block/block_int-common.h @@ -1373,6 +1373,11 @@ int bdrv_check_qiov_request(int64_t offset, int64_t = bytes, QEMUIOVector *qiov, size_t qiov_offset, Error **errp); =20 +static inline void bdrv_advance_flush_gen(BlockDriverState *bs) +{ + qatomic_inc(&bs->write_gen); +} + bool cbw_filter_present(void); =20 #ifdef _WIN32 --=20 2.43.5