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 8990BEF06E3 for ; Mon, 9 Feb 2026 07:58:12 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1vpM9a-0000fr-Qg; Mon, 09 Feb 2026 02:57:54 -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 1vpM9Y-0000f6-83 for qemu-devel@nongnu.org; Mon, 09 Feb 2026 02:57:52 -0500 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 1vpM9W-0008Bw-JC for qemu-devel@nongnu.org; Mon, 09 Feb 2026 02:57:52 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1770623869; 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: resent-to:resent-from:resent-message-id:in-reply-to:in-reply-to: references:references; bh=EuDPFKH0CUApxSbETMSMJcVSp7F1dhGPLx2r7P3FWrA=; b=WtofMPo+O1B8NHC3eBMEXQU4/RSLSffnxVcx5ECrNhJldvmuPWKMNjYCN5XWN6sGEGFYH5 RFc2mKZJfSFErIpAlb3OGRKWh2Q0HhBLJdqVo8VAY7WvSrrv0NQ/5n6AkrsjiOL0SX5RSQ ocua7yW9u2Aqf/GwDSoHE81B+BLHpeE= Received: from mx-prod-mc-03.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-457-cCTSg3wwMKCEDfbTthxr2A-1; Mon, 09 Feb 2026 02:57:45 -0500 X-MC-Unique: cCTSg3wwMKCEDfbTthxr2A-1 X-Mimecast-MFC-AGG-ID: cCTSg3wwMKCEDfbTthxr2A_1770623864 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-03.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id BFC441955F1D; Mon, 9 Feb 2026 07:57:43 +0000 (UTC) Received: from blackfin.pond.sub.org (unknown [10.45.242.15]) by mx-prod-int-06.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id 35C2018004AD; Mon, 9 Feb 2026 07:57:43 +0000 (UTC) Received: by blackfin.pond.sub.org (Postfix, from userid 1000) id ADF1321E692D; Mon, 09 Feb 2026 08:57:40 +0100 (CET) Resent-To: bernd@bsbernd.com, fam@euphon.net, hibriansong@gmail.com, qemu-block@nongnu.org, qemu-devel@nongnu.org Resent-From: Markus Armbruster Resent-Date: Mon, 09 Feb 2026 08:57:40 +0100 Resent-Message-ID: <87ms1icpsb.fsf@pond.sub.org> From: Markus Armbruster To: Brian Song Cc: qemu-block@nongnu.org, qemu-devel@nongnu.org, hreitz@redhat.com, kwolf@redhat.com, eblake@redhat.com, stefanha@redhat.com, fam@euphon.net, bernd@bsbernd.com Subject: Re: [Patch v4 6/7] fuse: add 'io-uring' option In-Reply-To: <20260207120901.17222-7-hibriansong@gmail.com> (Brian Song's message of "Sat, 7 Feb 2026 20:09:00 +0800") References: <20260207120901.17222-1-hibriansong@gmail.com> <20260207120901.17222-7-hibriansong@gmail.com> Date: Mon, 09 Feb 2026 06:24:00 +0100 Message-ID: <87ikc6ebgv.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: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 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_NONE=-0.0001, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, RCVD_IN_VALIDITY_SAFE_BLOCKED=0.001, SPF_HELO_PASS=-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: qemu development 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 Brian Song writes: > This patch adds a new storage export option for storage-export-daemon > to enable FUSE-over-io_uring via 'io-uring=on|off' (default: off). > > The initialization phase performs a protocol handshake via the legacy > /dev/fuse interface before transitioning to the io_uring mode. > If multiple IOThreads are configured, the export distributes the uring > queues to handle requests concurrently. > > Suggested-by: Kevin Wolf > Suggested-by: Stefan Hajnoczi > Signed-off-by: Brian Song [...] > diff --git a/qapi/block-export.json b/qapi/block-export.json > index 9ae703ad01..37f2fc47e2 100644 > --- a/qapi/block-export.json > +++ b/qapi/block-export.json > @@ -184,12 +184,15 @@ > # mount the export with allow_other, and if that fails, try again > # without. (since 6.1; default: auto) > # > +# @io-uring: Use FUSE-over-io-uring. (since 10.2; default: false) since 11.0 > +# > # Since: 6.0 > ## > { 'struct': 'BlockExportOptionsFuse', > 'data': { 'mountpoint': 'str', > '*growable': 'bool', > - '*allow-other': 'FuseExportAllowOther' }, > + '*allow-other': 'FuseExportAllowOther', > + '*io-uring': 'bool' }, > 'if': 'CONFIG_FUSE' } > > ## With that Acked-by: Markus Armbruster [...]