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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (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 A4A46E77180 for ; Tue, 10 Dec 2024 20:26:04 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Type: Content-Transfer-Encoding:MIME-Version:References:In-Reply-To:Message-ID:Date :Subject:CC:To:From:Reply-To:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=924Fq1a7MqtuYjIm12r9i7+BviK2AxhmOrAIwHZ2dfo=; b=J0Zccylj1aZIu5PLeSCn/8DLqe g+dmJeTPaXbItW6lGKA9qjX7Z5jS+N0rhFQH6D2B98FTV30dyNGogzg/R3mDCVkjc+GnUQvbvCQsE E1kcIetyeREcDF3HCMPRXxyNd+QZaR+rA6tZyEKKOlOV+V/BdLYF/j9NL4O0V13V0T/goxMLOfXyI pKX24lxvIzwJEZkvtZ1lmO7Mk5MC+qdn/F2PNkejgUWgaJls6VkTmk7SoI2HCfAD/B5pmxh3as2CT ISedpvUtAlyciWjWnJAjHT/LI789G6Ng/cMkhO1+owL69CYgz9BPKqnA7qI+ZRHXXBaR1xpVGwnOp aCS+dG2g==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98 #2 (Red Hat Linux)) id 1tL6nx-0000000Cfeb-21DM; Tue, 10 Dec 2024 20:26:01 +0000 Received: from mx0a-00082601.pphosted.com ([67.231.145.42]) by bombadil.infradead.org with esmtps (Exim 4.98 #2 (Red Hat Linux)) id 1tL6nv-0000000CfeA-2mu9 for linux-nvme@lists.infradead.org; Tue, 10 Dec 2024 20:26:00 +0000 Received: from pps.filterd (m0148461.ppops.net [127.0.0.1]) by mx0a-00082601.pphosted.com (8.18.1.2/8.18.1.2) with ESMTP id 4BAHvRp4030100 for ; Tue, 10 Dec 2024 12:25:59 -0800 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=meta.com; h=cc :content-transfer-encoding:content-type:date:from:in-reply-to :message-id:mime-version:references:subject:to; s=s2048-2021-q4; bh=924Fq1a7MqtuYjIm12r9i7+BviK2AxhmOrAIwHZ2dfo=; b=eWP60xGXAGym dxeGptt8caqa2+Ns4mCDH5t9b0UWGwXUeYZOPjoXvsISKt2yJRL10YPKaiyi33l4 X2MwC37yktGh/iGjqkHQ0Hu6f3xZPRY3bdmrN3/PT9/QLN/gQMdAbxT5zyDy2ytF YKlZW+E3UkNIRe4w13kTsGF788lzTtzw+NEoVxWVHceX1naVDm0OARGz7DZCgwMR ZR/6mpyA1eNv68gXf/FlkoQxJHjwaHOcpcTPVxMDsc3nc9QDpOq7rYCGy1SEXAyc zH8m7GMtQKBQ4oOExjoAZej+NT83xJo/xgjwmsBMe/ANTho9/RPtqA27GuEUndM0 nGTZZ8OSdQ== Received: from maileast.thefacebook.com ([163.114.135.16]) by mx0a-00082601.pphosted.com (PPS) with ESMTPS id 43etg996xk-2 (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128 verify=NOT) for ; Tue, 10 Dec 2024 12:25:58 -0800 (PST) Received: from twshared9216.15.frc2.facebook.com (2620:10d:c0a8:1b::30) by mail.thefacebook.com (2620:10d:c0a9:6f::237c) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.2.1544.11; Tue, 10 Dec 2024 20:25:39 +0000 Received: by devbig638.nha1.facebook.com (Postfix, from userid 544533) id 8DB2115D5C7CA; Tue, 10 Dec 2024 11:48:08 -0800 (PST) From: Keith Busch To: , , , , , CC: , , , , Keith Busch , Hannes Reinecke Subject: [PATCHv13 06/11] io_uring: enable per-io write streams Date: Tue, 10 Dec 2024 11:47:17 -0800 Message-ID: <20241210194722.1905732-7-kbusch@meta.com> X-Mailer: git-send-email 2.43.5 In-Reply-To: <20241210194722.1905732-1-kbusch@meta.com> References: <20241210194722.1905732-1-kbusch@meta.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-FB-Internal: Safe Content-Type: text/plain X-Proofpoint-ORIG-GUID: f5KxtphkXYI-vZxlNxJt_OuacAJbVijH X-Proofpoint-GUID: f5KxtphkXYI-vZxlNxJt_OuacAJbVijH X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1051,Hydra:6.0.680,FMLib:17.12.62.30 definitions=2024-10-05_03,2024-10-04_01,2024-09-30_01 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20241210_122559_708165_864FF6CE X-CRM114-Status: UNSURE ( 9.94 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-nvme@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-nvme" Errors-To: linux-nvme-bounces+linux-nvme=archiver.kernel.org@lists.infradead.org From: Keith Busch Allow userspace to pass a per-I/O write stream in the SQE: __u8 write_stream; The __u8 type matches the size the filesystems and block layer support. Application can query the supported values from the statx max_write_streams field. Unsupported values are ignored by file operations that do not support write streams or rejected with an error by those that support them. Reviewed-by: Hannes Reinecke Signed-off-by: Keith Busch --- include/uapi/linux/io_uring.h | 4 ++++ io_uring/io_uring.c | 2 ++ io_uring/rw.c | 1 + 3 files changed, 7 insertions(+) diff --git a/include/uapi/linux/io_uring.h b/include/uapi/linux/io_uring.= h index 38f0d6b10eaf7..986a480e3b9c2 100644 --- a/include/uapi/linux/io_uring.h +++ b/include/uapi/linux/io_uring.h @@ -92,6 +92,10 @@ struct io_uring_sqe { __u16 addr_len; __u16 __pad3[1]; }; + struct { + __u8 write_stream; + __u8 __pad4[3]; + }; }; union { struct { diff --git a/io_uring/io_uring.c b/io_uring/io_uring.c index ae36aa702f463..b561c5e8879ac 100644 --- a/io_uring/io_uring.c +++ b/io_uring/io_uring.c @@ -3869,6 +3869,8 @@ static int __init io_uring_init(void) BUILD_BUG_SQE_ELEM(44, __s32, splice_fd_in); BUILD_BUG_SQE_ELEM(44, __u32, file_index); BUILD_BUG_SQE_ELEM(44, __u16, addr_len); + BUILD_BUG_SQE_ELEM(44, __u8, write_stream); + BUILD_BUG_SQE_ELEM(45, __u8, __pad4[0]); BUILD_BUG_SQE_ELEM(46, __u16, __pad3[0]); BUILD_BUG_SQE_ELEM(48, __u64, addr3); BUILD_BUG_SQE_ELEM_SIZE(48, 0, cmd); diff --git a/io_uring/rw.c b/io_uring/rw.c index 5b24fd8b69f62..416ccd89a77ed 100644 --- a/io_uring/rw.c +++ b/io_uring/rw.c @@ -316,6 +316,7 @@ static int io_prep_rw(struct io_kiocb *req, const str= uct io_uring_sqe *sqe, } rw->kiocb.dio_complete =3D NULL; rw->kiocb.ki_flags =3D 0; + rw->kiocb.ki_write_stream =3D READ_ONCE(sqe->write_stream); =20 rw->addr =3D READ_ONCE(sqe->addr); rw->len =3D READ_ONCE(sqe->len); --=20 2.43.5