From patchwork Wed Feb 26 08:37:16 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Bob Liu X-Patchwork-Id: 11405555 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 85828924 for ; Wed, 26 Feb 2020 08:40:51 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 64940222C2 for ; Wed, 26 Feb 2020 08:40:51 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=oracle.com header.i=@oracle.com header.b="JiIsQRjn" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727855AbgBZIku (ORCPT ); Wed, 26 Feb 2020 03:40:50 -0500 Received: from userp2130.oracle.com ([156.151.31.86]:33514 "EHLO userp2130.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727823AbgBZIkt (ORCPT ); Wed, 26 Feb 2020 03:40:49 -0500 Received: from pps.filterd (userp2130.oracle.com [127.0.0.1]) by userp2130.oracle.com (8.16.0.42/8.16.0.42) with SMTP id 01Q8dUX1013730; Wed, 26 Feb 2020 08:40:46 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=oracle.com; h=from : to : cc : subject : date : message-id : in-reply-to : references; s=corp-2020-01-29; bh=CT6n6U935vcrUBg8uf+s666OpRuH6tq158bXwYwRJ/I=; b=JiIsQRjnXpNWR8RDOkYMWO7f8nH4LsVTW/PoyHxWI9bVbrFvFmxEWzIRosSEvjQB+ewL 25+kfTx/2rHQm7OKp7SyYb2Fdmdtm67VQ5zV1iqlr3Q3pKh7ZQfwkEVbRfLxDV5RRLv1 R4fRjaz5X+P8xlVIItg1Z7kt/fM1zroNFhUdc2wGtbH8+JYfqDSS97ig4hVTo+Rz6MBq nq+dP4w8JefZ06LrVX3AL/kGGwB1XDXaRnlMqRCqFSImurjemUD5mtpvVP+RZy/2DFIE QgzXwDhhGCF7shfvapptPCBuF3PKvKsohh4bTqG3eHWJmqV0HaDpTmpTNrATd32Yoax3 Mg== Received: from userp3030.oracle.com (userp3030.oracle.com [156.151.31.80]) by userp2130.oracle.com with ESMTP id 2ydcsn9xp1-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Wed, 26 Feb 2020 08:40:46 +0000 Received: from pps.filterd (userp3030.oracle.com [127.0.0.1]) by userp3030.oracle.com (8.16.0.42/8.16.0.42) with SMTP id 01Q8cBdD091499; Wed, 26 Feb 2020 08:38:46 GMT Received: from aserv0121.oracle.com (aserv0121.oracle.com [141.146.126.235]) by userp3030.oracle.com with ESMTP id 2ydcs1hs1u-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Wed, 26 Feb 2020 08:38:45 +0000 Received: from abhmp0005.oracle.com (abhmp0005.oracle.com [141.146.116.11]) by aserv0121.oracle.com (8.14.4/8.13.8) with ESMTP id 01Q8cikv010058; Wed, 26 Feb 2020 08:38:44 GMT Received: from localhost.localdomain (/114.88.246.185) by default (Oracle Beehive Gateway v4.0) with ESMTP ; Wed, 26 Feb 2020 00:38:43 -0800 From: Bob Liu To: linux-block@vger.kernel.org Cc: axboe@kernel.dk, martin.petersen@oracle.com, linux-fsdevel@vger.kernel.org, darrick.wong@oracle.com, io-uring@vger.kernel.org, Bob Liu Subject: [PATCH 1/4] io_uring: add IORING_OP_READ{WRITE}V_PI cmd Date: Wed, 26 Feb 2020 16:37:16 +0800 Message-Id: <20200226083719.4389-2-bob.liu@oracle.com> X-Mailer: git-send-email 2.9.5 In-Reply-To: <20200226083719.4389-1-bob.liu@oracle.com> References: <20200226083719.4389-1-bob.liu@oracle.com> X-Proofpoint-Virus-Version: vendor=nai engine=6000 definitions=9542 signatures=668685 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 adultscore=0 bulkscore=0 malwarescore=0 mlxlogscore=999 mlxscore=0 phishscore=0 suspectscore=1 spamscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2001150001 definitions=main-2002260065 X-Proofpoint-Virus-Version: vendor=nai engine=6000 definitions=9542 signatures=668685 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 mlxscore=0 malwarescore=0 bulkscore=0 lowpriorityscore=0 mlxlogscore=999 phishscore=0 spamscore=0 adultscore=0 suspectscore=1 impostorscore=0 clxscore=1015 priorityscore=1501 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2001150001 definitions=main-2002260065 Sender: linux-fsdevel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-fsdevel@vger.kernel.org Add read and write with protect information command. Signed-off-by: Bob Liu --- fs/io_uring.c | 12 ++++++++++++ include/linux/fs.h | 1 + include/uapi/linux/io_uring.h | 2 ++ 3 files changed, 15 insertions(+) diff --git a/fs/io_uring.c b/fs/io_uring.c index 562e3a1..c43d96a 100644 --- a/fs/io_uring.c +++ b/fs/io_uring.c @@ -630,12 +630,14 @@ static inline bool io_prep_async_work(struct io_kiocb *req, switch (req->opcode) { case IORING_OP_WRITEV: + case IORING_OP_WRITEV_PI: case IORING_OP_WRITE_FIXED: /* only regular files should be hashed for writes */ if (req->flags & REQ_F_ISREG) do_hashed = true; /* fall-through */ case IORING_OP_READV: + case IORING_OP_READV_PI: case IORING_OP_READ_FIXED: case IORING_OP_SENDMSG: case IORING_OP_RECVMSG: @@ -1505,6 +1507,12 @@ static int io_prep_rw(struct io_kiocb *req, const struct io_uring_sqe *sqe, kiocb->ki_pos = READ_ONCE(sqe->off); kiocb->ki_flags = iocb_flags(kiocb->ki_filp); kiocb->ki_hint = ki_hint_validate(file_write_hint(kiocb->ki_filp)); + if (req->opcode == IORING_OP_READV_PI || + req->opcode == IORING_OP_WRITEV_PI) { + if (!(req->file->f_flags & O_DIRECT)) + return -EINVAL; + kiocb->ki_flags |= IOCB_USE_PI; + } ioprio = READ_ONCE(sqe->ioprio); if (ioprio) { @@ -3065,10 +3073,12 @@ static int io_req_defer_prep(struct io_kiocb *req, case IORING_OP_NOP: break; case IORING_OP_READV: + case IORING_OP_READV_PI: case IORING_OP_READ_FIXED: ret = io_read_prep(req, sqe, true); break; case IORING_OP_WRITEV: + case IORING_OP_WRITEV_PI: case IORING_OP_WRITE_FIXED: ret = io_write_prep(req, sqe, true); break; @@ -3156,6 +3166,7 @@ static int io_issue_sqe(struct io_kiocb *req, const struct io_uring_sqe *sqe, case IORING_OP_NOP: ret = io_nop(req); break; + case IORING_OP_READV_PI: case IORING_OP_READV: case IORING_OP_READ_FIXED: if (sqe) { @@ -3166,6 +3177,7 @@ static int io_issue_sqe(struct io_kiocb *req, const struct io_uring_sqe *sqe, ret = io_read(req, nxt, force_nonblock); break; case IORING_OP_WRITEV: + case IORING_OP_WRITEV_PI: case IORING_OP_WRITE_FIXED: if (sqe) { ret = io_write_prep(req, sqe, force_nonblock); diff --git a/include/linux/fs.h b/include/linux/fs.h index 98e0349..65fda07 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -314,6 +314,7 @@ enum rw_hint { #define IOCB_SYNC (1 << 5) #define IOCB_WRITE (1 << 6) #define IOCB_NOWAIT (1 << 7) +#define IOCB_USE_PI (1 << 8) struct kiocb { struct file *ki_filp; diff --git a/include/uapi/linux/io_uring.h b/include/uapi/linux/io_uring.h index a3300e1..98fa3f1 100644 --- a/include/uapi/linux/io_uring.h +++ b/include/uapi/linux/io_uring.h @@ -62,6 +62,8 @@ enum { IORING_OP_NOP, IORING_OP_READV, IORING_OP_WRITEV, + IORING_OP_READV_PI, + IORING_OP_WRITEV_PI, IORING_OP_FSYNC, IORING_OP_READ_FIXED, IORING_OP_WRITE_FIXED,