All of lore.kernel.org
 help / color / mirror / Atom feed
From: Bob Liu <bob.liu@oracle.com>
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 <bob.liu@oracle.com>
Subject: [PATCH 1/4] io_uring: add IORING_OP_READ{WRITE}V_PI cmd
Date: Wed, 26 Feb 2020 16:37:16 +0800	[thread overview]
Message-ID: <20200226083719.4389-2-bob.liu@oracle.com> (raw)
In-Reply-To: <20200226083719.4389-1-bob.liu@oracle.com>

Add read and write with protect information command.

Signed-off-by: Bob Liu <bob.liu@oracle.com>
---
 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,
-- 
2.9.5


  reply	other threads:[~2020-02-26  8:40 UTC|newest]

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-02-26  8:37 [RFC PATCH 0/4] userspace PI passthrough via io_uring Bob Liu
2020-02-26  8:37 ` Bob Liu [this message]
2020-02-26 14:24   ` [PATCH 1/4] io_uring: add IORING_OP_READ{WRITE}V_PI cmd Jens Axboe
2020-02-26 15:57     ` Christoph Hellwig
2020-02-26 15:58       ` Jens Axboe
2020-02-26 16:03         ` Darrick J. Wong
2020-02-26 16:53         ` Christoph Hellwig
2020-02-27  9:19           ` Bob Liu
2020-02-27  9:05     ` Bob Liu
2020-02-26  8:37 ` [PATCH 2/4] bio-integrity: introduce two funcs handle protect information Bob Liu
2020-02-26 16:03   ` Darrick J. Wong
2020-02-27  9:23     ` Bob Liu
2020-02-26  8:37 ` [PATCH 3/4] block_dev: support protect information passthrough Bob Liu
2020-02-26 16:04   ` Darrick J. Wong
2020-02-26  8:37 ` [PATCH 4/4] liburing/test: add testcase for " Bob Liu
2020-02-26 14:25 ` [RFC PATCH 0/4] userspace PI passthrough via io_uring Jens Axboe

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20200226083719.4389-2-bob.liu@oracle.com \
    --to=bob.liu@oracle.com \
    --cc=axboe@kernel.dk \
    --cc=darrick.wong@oracle.com \
    --cc=io-uring@vger.kernel.org \
    --cc=linux-block@vger.kernel.org \
    --cc=linux-fsdevel@vger.kernel.org \
    --cc=martin.petersen@oracle.com \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.