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 A4D44E7717B for ; Fri, 6 Dec 2024 22:30:09 +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=R9M24a6ylRLzXnir6ciiUs6+m+tvkucIQYlBzr9gqaU=; b=xcuuQlpU1pvnt03IMznn2ch4+r CF+KRK95KZgtltV4b93rqHu+F91/rNo5nOr7FkP0OzciJcAWBDHOhHPRMXMzIJSbrHBn0HmQeuHb5 xA5K4vuSxf+j3NB+fTJUhhdJ/YiIc5Q1mjlfYmIKN1hlUJNppRvllJL9FfDp8SuBK8ka7Ealbhnte DbnAcQeZieuZy8gtCbgvLyi7c9cpACyRstSLkrR/2sePj/D70PqVsLFnqAWsQZfTB3pSG+DoDxHyF mBTPvuHWgb5cvaAuFVsEfkEq0KLq2WFi50sBMufcBVx1t+Fqqqy8H1eQdKfVl7pBJ/iQu+S2GbFcm 6CSQmTCw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98 #2 (Red Hat Linux)) id 1tJgpr-00000002v7S-3U4m; Fri, 06 Dec 2024 22:30:07 +0000 Received: from mx0b-00082601.pphosted.com ([67.231.153.30] helo=mx0a-00082601.pphosted.com) by bombadil.infradead.org with esmtps (Exim 4.98 #2 (Red Hat Linux)) id 1tJgpo-00000002v4q-2Iv9 for linux-nvme@lists.infradead.org; Fri, 06 Dec 2024 22:30:05 +0000 Received: from pps.filterd (m0001303.ppops.net [127.0.0.1]) by m0001303.ppops.net (8.18.1.2/8.18.1.2) with ESMTP id 4B6Lh0CD021619 for ; Fri, 6 Dec 2024 14:30:03 -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=R9M24a6ylRLzXnir6ciiUs6+m+tvkucIQYlBzr9gqaU=; b=M+EE+KShOfku JfkC7f/NloEFOPkHP7tJELbCox8qTlakVfbc278w65KOW30+ojsqvz6uT8v27G0J qq701yzAHnwvTFOUa3+BYJpmf2klPnDsd164LJTCyBlY04xXtusYMAJ76+VwVYjF vYO22fQ3Y0uVdbCDB9EQwPsRRvTrR8/CiZ+9Dw8ZnYkpRcs82jCfUHCCvX3rsRCa NoQr6TBxAlj3BigunL1FxA6y+gfgy5p+mCbyd8ig1KIR25qM7Tk1pkRvXLk8lWpm 3GDfkEIzeA+crYIMgaSi3mzWma9LRvWjDSLJhiYKNavUJLPTW/Ld99rHocHKYGe2 OF0uB11I9g== Received: from mail.thefacebook.com ([163.114.134.16]) by m0001303.ppops.net (PPS) with ESMTPS id 43c7neh2ax-3 (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128 verify=NOT) for ; Fri, 06 Dec 2024 14:30:03 -0800 (PST) Received: from twshared8234.09.ash9.facebook.com (2620:10d:c085:208::7cb7) by mail.thefacebook.com (2620:10d:c08b:78::2ac9) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.2.1544.11; Fri, 6 Dec 2024 22:30:00 +0000 Received: by devbig638.nha1.facebook.com (Postfix, from userid 544533) id 4113F15B8CB82; Fri, 6 Dec 2024 14:18:27 -0800 (PST) From: Keith Busch To: , , , , , CC: , , , , Keith Busch Subject: [PATCHv12 07/12] io_uring: enable per-io write streams Date: Fri, 6 Dec 2024 14:17:56 -0800 Message-ID: <20241206221801.790690-8-kbusch@meta.com> X-Mailer: git-send-email 2.43.5 In-Reply-To: <20241206221801.790690-1-kbusch@meta.com> References: <20241206221801.790690-1-kbusch@meta.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-FB-Internal: Safe Content-Type: text/plain X-Proofpoint-GUID: MXdgfYIwkUXvMn2EsUSZALYpNzgNR9wQ X-Proofpoint-ORIG-GUID: MXdgfYIwkUXvMn2EsUSZALYpNzgNR9wQ 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-20241206_143004_733945_DF2B9C2F X-CRM114-Status: UNSURE ( 9.75 ) 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. 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 a8cbe674e5d63..978d0617d7af8 100644 --- a/io_uring/io_uring.c +++ b/io_uring/io_uring.c @@ -3868,6 +3868,8 @@ 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 04e4467ab0ee8..b8aa2dfcbf48c 100644 --- a/io_uring/rw.c +++ b/io_uring/rw.c @@ -322,6 +322,7 @@ 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