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 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 smtp.lore.kernel.org (Postfix) with ESMTPS id 58B59C5B549 for ; Wed, 4 Jun 2025 13:59:26 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1uModQ-00009M-NS; Wed, 04 Jun 2025 09:58:28 -0400 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 1uModO-000091-Du for qemu-devel@nongnu.org; Wed, 04 Jun 2025 09:58:26 -0400 Received: from us-smtp-delivery-124.mimecast.com ([170.10.129.124]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1uModN-0000uP-2R for qemu-devel@nongnu.org; Wed, 04 Jun 2025 09:58:26 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1749045502; 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: in-reply-to:in-reply-to:references:references; bh=uen7lMaxnDgFWaglw6t9rnRNCNirUKu3wWyV9TMwV0s=; b=XEcDk60jJOcKR5NLDhJCCepz/fFJ/UshA2owoorIDzpvZy+MCCHHtxxnNaxH2nE1bw1NxY YylKm1jEOb7SHDDIK230uHYrHa8PcSxCbIYdnNySuSEKDtwU1Npu9RfSpUo3T0PU/tvk4g gAOQsEiCL0Z6zN4gHnorst8G9dlNsFA= Received: from mx-prod-mc-04.mail-002.prod.us-west-2.aws.redhat.com (ec2-54-186-198-63.us-west-2.compute.amazonaws.com [54.186.198.63]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-141-ZTkhFg2NPyO1poAEvjjwEA-1; Wed, 04 Jun 2025 09:58:20 -0400 X-MC-Unique: ZTkhFg2NPyO1poAEvjjwEA-1 X-Mimecast-MFC-AGG-ID: ZTkhFg2NPyO1poAEvjjwEA_1749045499 Received: from mx-prod-int-06.mail-002.prod.us-west-2.aws.redhat.com (mx-prod-int-06.mail-002.prod.us-west-2.aws.redhat.com [10.30.177.93]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by mx-prod-mc-04.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id 2613A1955DB8; Wed, 4 Jun 2025 13:58:19 +0000 (UTC) Received: from blackfin.pond.sub.org (unknown [10.45.242.38]) by mx-prod-int-06.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id 9B69618003FD; Wed, 4 Jun 2025 13:58:18 +0000 (UTC) Received: by blackfin.pond.sub.org (Postfix, from userid 1000) id 0DFAC21E6757; Wed, 04 Jun 2025 15:58:16 +0200 (CEST) From: Markus Armbruster To: Hanna Czenczek Cc: qemu-block@nongnu.org, qemu-devel@nongnu.org, Stefan Hajnoczi , Kevin Wolf , Brian Song Subject: Re: [PATCH v2 16/21] block/export: Add multi-threading interface In-Reply-To: <20250604132813.359438-17-hreitz@redhat.com> (Hanna Czenczek's message of "Wed, 4 Jun 2025 15:28:08 +0200") References: <20250604132813.359438-1-hreitz@redhat.com> <20250604132813.359438-17-hreitz@redhat.com> Date: Wed, 04 Jun 2025 15:58:16 +0200 Message-ID: <87bjr3sj5z.fsf@pond.sub.org> User-Agent: Gnus/5.13 (Gnus v5.13) MIME-Version: 1.0 Content-Type: text/plain X-Scanned-By: MIMEDefang 3.4.1 on 10.30.177.93 Received-SPF: pass client-ip=170.10.129.124; envelope-from=armbru@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -21 X-Spam_score: -2.2 X-Spam_bar: -- X-Spam_report: (-2.2 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.128, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H5=0.001, RCVD_IN_MSPIKE_WL=0.001, RCVD_IN_VALIDITY_CERTIFIED_BLOCKED=0.001, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, 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: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Hanna Czenczek writes: > Make BlockExportType.iothread an alternate between a single-thread > variant 'str' and a multi-threading variant '[str]'. > > In contrast to the single-thread setting, the multi-threading setting > will not change the BDS's context (and so is incompatible with the > fixed-iothread setting), but instead just pass a list to the export > driver, with which it can do whatever it wants. > > Currently no export driver supports multi-threading, so they all return > an error when receiving such a list. > > Suggested-by: Kevin Wolf > Signed-off-by: Hanna Czenczek Acked-by: Markus Armbruster