From: Pavel Begunkov <[email protected]>
To: [email protected]
Cc: Jens Axboe <[email protected]>, [email protected]
Subject: [PATCH 5.19] io_uring: keep sendrecv flags in ioprio
Date: Thu, 30 Jun 2022 13:25:57 +0100 [thread overview]
Message-ID: <06ab196021be1b5463879f637e080ac2c67ec91e.1656591720.git.asml.silence@gmail.com> (raw)
We waste a u64 SQE field for flags even though we don't need as many
bits and it can be used for something more useful later. Store io_uring
specific send/recv flags in sqe->prio instead of ->addr2.
Signed-off-by: Pavel Begunkov <[email protected]>
---
Changes uapi, but it came in 5.19 so it's still fine to change
fs/io_uring.c | 12 ++++++++----
1 file changed, 8 insertions(+), 4 deletions(-)
diff --git a/fs/io_uring.c b/fs/io_uring.c
index 5ff2cdb425bc..aeb042ba5cc5 100644
--- a/fs/io_uring.c
+++ b/fs/io_uring.c
@@ -1183,6 +1183,7 @@ static const struct io_op_def io_op_defs[] = {
.unbound_nonreg_file = 1,
.pollout = 1,
.needs_async_setup = 1,
+ .ioprio = 1,
.async_size = sizeof(struct io_async_msghdr),
},
[IORING_OP_RECVMSG] = {
@@ -1191,6 +1192,7 @@ static const struct io_op_def io_op_defs[] = {
.pollin = 1,
.buffer_select = 1,
.needs_async_setup = 1,
+ .ioprio = 1,
.async_size = sizeof(struct io_async_msghdr),
},
[IORING_OP_TIMEOUT] = {
@@ -1266,6 +1268,7 @@ static const struct io_op_def io_op_defs[] = {
.unbound_nonreg_file = 1,
.pollout = 1,
.audit_skip = 1,
+ .ioprio = 1,
},
[IORING_OP_RECV] = {
.needs_file = 1,
@@ -1273,6 +1276,7 @@ static const struct io_op_def io_op_defs[] = {
.pollin = 1,
.buffer_select = 1,
.audit_skip = 1,
+ .ioprio = 1,
},
[IORING_OP_OPENAT2] = {
},
@@ -6075,12 +6079,12 @@ static int io_sendmsg_prep(struct io_kiocb *req, const struct io_uring_sqe *sqe)
{
struct io_sr_msg *sr = &req->sr_msg;
- if (unlikely(sqe->file_index))
+ if (unlikely(sqe->file_index || sqe->addr2))
return -EINVAL;
sr->umsg = u64_to_user_ptr(READ_ONCE(sqe->addr));
sr->len = READ_ONCE(sqe->len);
- sr->flags = READ_ONCE(sqe->addr2);
+ sr->flags = READ_ONCE(sqe->ioprio);
if (sr->flags & ~IORING_RECVSEND_POLL_FIRST)
return -EINVAL;
sr->msg_flags = READ_ONCE(sqe->msg_flags) | MSG_NOSIGNAL;
@@ -6311,12 +6315,12 @@ static int io_recvmsg_prep(struct io_kiocb *req, const struct io_uring_sqe *sqe)
{
struct io_sr_msg *sr = &req->sr_msg;
- if (unlikely(sqe->file_index))
+ if (unlikely(sqe->file_index || sqe->addr2))
return -EINVAL;
sr->umsg = u64_to_user_ptr(READ_ONCE(sqe->addr));
sr->len = READ_ONCE(sqe->len);
- sr->flags = READ_ONCE(sqe->addr2);
+ sr->flags = READ_ONCE(sqe->ioprio);
if (sr->flags & ~IORING_RECVSEND_POLL_FIRST)
return -EINVAL;
sr->msg_flags = READ_ONCE(sqe->msg_flags) | MSG_NOSIGNAL;
--
2.36.1
next reply other threads:[~2022-06-30 12:27 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-06-30 12:25 Pavel Begunkov [this message]
2022-06-30 14:56 ` [PATCH 5.19] io_uring: keep sendrecv flags in ioprio Jens Axboe
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