From patchwork Fri Dec 6 22:17:56 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Keith Busch X-Patchwork-Id: 13897885 Received: from mx0a-00082601.pphosted.com (mx0b-00082601.pphosted.com [67.231.153.30]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 5A141212FAA for ; Fri, 6 Dec 2024 22:30:06 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=67.231.153.30 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1733524208; cv=none; b=SM9B3GhfUWHAYUqrpzmZSdlctEONMa/zIJro78KzYIsnH7qK6PBeIBZh3bw9dY0HTD+yTG3E5QRScf6i3mh9obl6KlmSK7mcBY6zRH19gzlC+5Lr55kUqF7GwwTdDeLRwTxCGSBQpp7yj18/H8+0bPeuFq3gEcSZ8zxHi0KHoOw= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1733524208; c=relaxed/simple; bh=3DQXd4yJtDB6BYisNYWGe/g9nDmYCbca6TMBeVLuqls=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=clIjw7hxCp0X0YiYp/HFDD9r09IwEbQw2sVRtYPn30Lfn16yuROGtF7EKLtfbiDbIdOxj5Hj1YNBJXw15sjSAEwmuCc4S+PsaqILKZqjhzA/fvSNWTb/Fv/1F4T/eAkEy7nEWfP9dx9oXU2uTXBKsXf8G8K1XZdmNgyP73B3VX8= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=meta.com; spf=pass smtp.mailfrom=meta.com; dkim=pass (2048-bit key) header.d=meta.com header.i=@meta.com header.b=M+EE+KSh; arc=none smtp.client-ip=67.231.153.30 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=meta.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=meta.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=meta.com header.i=@meta.com header.b="M+EE+KSh" 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 4B6Lh0CG021619 for ; Fri, 6 Dec 2024 14:30:05 -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-6 (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128 verify=NOT) for ; Fri, 06 Dec 2024 14:30:05 -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> Precedence: bulk X-Mailing-List: linux-block@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-FB-Internal: Safe X-Proofpoint-GUID: bZPH7CT6I18O_l-cTMzdMH3rnOBF4RDN X-Proofpoint-ORIG-GUID: bZPH7CT6I18O_l-cTMzdMH3rnOBF4RDN 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 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 Reviewed-by: Hannes Reinecke --- 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 struct io_uring_sqe *sqe, } rw->kiocb.dio_complete = NULL; rw->kiocb.ki_flags = 0; + rw->kiocb.ki_write_stream = READ_ONCE(sqe->write_stream); rw->addr = READ_ONCE(sqe->addr); rw->len = READ_ONCE(sqe->len);