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From: Pavel Begunkov <asml.silence@gmail.com>
To: Jens Axboe <axboe@kernel.dk>,
	io-uring@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: [PATCH v3 4/4] io_uring: move send/recv IOPOLL check into prep
Date: Wed,  3 Jun 2020 18:03:25 +0300	[thread overview]
Message-ID: <7a733381a405c8f510a82313a7ba1359e8f0128e.1591196426.git.asml.silence@gmail.com> (raw)
In-Reply-To: <cover.1591196426.git.asml.silence@gmail.com>

Fail recv/send in case of IORING_SETUP_IOPOLL earlier during prep,
so it'd be done only once. Removes duplication as well

Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
---
 fs/io_uring.c | 18 ++++++------------
 1 file changed, 6 insertions(+), 12 deletions(-)

diff --git a/fs/io_uring.c b/fs/io_uring.c
index 134627cbe86b..dee59c34acb3 100644
--- a/fs/io_uring.c
+++ b/fs/io_uring.c
@@ -3555,6 +3555,9 @@ static int io_sendmsg_prep(struct io_kiocb *req, const struct io_uring_sqe *sqe)
 	struct io_async_ctx *io = req->io;
 	int ret;
 
+	if (unlikely(req->ctx->flags & IORING_SETUP_IOPOLL))
+		return -EINVAL;
+
 	sr->msg_flags = READ_ONCE(sqe->msg_flags);
 	sr->msg = u64_to_user_ptr(READ_ONCE(sqe->addr));
 	sr->len = READ_ONCE(sqe->len);
@@ -3584,9 +3587,6 @@ static int io_sendmsg(struct io_kiocb *req, bool force_nonblock)
 	struct socket *sock;
 	int ret;
 
-	if (unlikely(req->ctx->flags & IORING_SETUP_IOPOLL))
-		return -EINVAL;
-
 	sock = sock_from_file(req->file, &ret);
 	if (sock) {
 		struct io_async_ctx io;
@@ -3640,9 +3640,6 @@ static int io_send(struct io_kiocb *req, bool force_nonblock)
 	struct socket *sock;
 	int ret;
 
-	if (unlikely(req->ctx->flags & IORING_SETUP_IOPOLL))
-		return -EINVAL;
-
 	sock = sock_from_file(req->file, &ret);
 	if (sock) {
 		struct io_sr_msg *sr = &req->sr_msg;
@@ -3795,6 +3792,9 @@ static int io_recvmsg_prep(struct io_kiocb *req,
 	struct io_async_ctx *io = req->io;
 	int ret;
 
+	if (unlikely(req->ctx->flags & IORING_SETUP_IOPOLL))
+		return -EINVAL;
+
 	sr->msg_flags = READ_ONCE(sqe->msg_flags);
 	sr->msg = u64_to_user_ptr(READ_ONCE(sqe->addr));
 	sr->len = READ_ONCE(sqe->len);
@@ -3823,9 +3823,6 @@ static int io_recvmsg(struct io_kiocb *req, bool force_nonblock)
 	struct socket *sock;
 	int ret, cflags = 0;
 
-	if (unlikely(req->ctx->flags & IORING_SETUP_IOPOLL))
-		return -EINVAL;
-
 	sock = sock_from_file(req->file, &ret);
 	if (sock) {
 		struct io_buffer *kbuf;
@@ -3887,9 +3884,6 @@ static int io_recv(struct io_kiocb *req, bool force_nonblock)
 	struct socket *sock;
 	int ret, cflags = 0;
 
-	if (unlikely(req->ctx->flags & IORING_SETUP_IOPOLL))
-		return -EINVAL;
-
 	sock = sock_from_file(req->file, &ret);
 	if (sock) {
 		struct io_sr_msg *sr = &req->sr_msg;
-- 
2.24.0


  parent reply	other threads:[~2020-06-03 15:05 UTC|newest]

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-06-03 15:03 [PATCH v3 0/4] forbid fix {SQ,IO}POLL Pavel Begunkov
2020-06-03 15:03 ` [PATCH v3 1/4] io_uring: fix {SQ,IO}POLL with unsupported opcodes Pavel Begunkov
2020-06-03 15:03 ` [PATCH v3 2/4] io_uring: do build_open_how() only once Pavel Begunkov
2020-06-03 15:03 ` [PATCH v3 3/4] io_uring: deduplicate io_openat{,2}_prep() Pavel Begunkov
2020-06-03 15:03 ` Pavel Begunkov [this message]
2020-06-03 15:14 ` [PATCH v3 0/4] forbid fix {SQ,IO}POLL Pavel Begunkov
2020-06-03 18:51 ` Jens Axboe
2020-06-04 17:06   ` Jens Axboe
2020-06-04 19:22     ` Pavel Begunkov
2020-06-04 19:52       ` Jens Axboe
2020-06-04 20:12         ` Pavel Begunkov
2020-06-04 20:17           ` Jens Axboe
2020-06-04 20:25             ` Pavel Begunkov

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