io_uring: Fix unused function warnings

If CONFIG_NET is not set, gcc warns:

fs/io_uring.c:3110:12: warning: io_setup_async_msg defined but not used [-Wunused-function]
 static int io_setup_async_msg(struct io_kiocb *req,
            ^~~~~~~~~~~~~~~~~~

There are many funcions wraped by CONFIG_NET, move them
together to simplify code, also fix this warning.

Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Minor tweaks.

Signed-off-by: Jens Axboe <axboe@kernel.dk>

diff --git a/fs/io_uring.c b/fs/io_uring.c
index 4bbad2e..eedcf9a 100644 (file)
--- a/fs/io_uring.c
+++ b/fs/io_uring.c
@@ -3477,6 +3477,7 @@ static int io_sync_file_range(struct io_kiocb *req, bool force_nonblock)
        return 0;
 }
 
+#if defined(CONFIG_NET)
 static int io_setup_async_msg(struct io_kiocb *req,
                              struct io_async_msghdr *kmsg)
 {
@@ -3494,7 +3495,6 @@ static int io_setup_async_msg(struct io_kiocb *req,
 
 static int io_sendmsg_prep(struct io_kiocb *req, const struct io_uring_sqe *sqe)
 {
-#if defined(CONFIG_NET)
        struct io_sr_msg *sr = &req->sr_msg;
        struct io_async_ctx *io = req->io;
        int ret;
@@ -3520,14 +3520,10 @@ static int io_sendmsg_prep(struct io_kiocb *req, const struct io_uring_sqe *sqe)
        if (!ret)
                req->flags |= REQ_F_NEED_CLEANUP;
        return ret;
-#else
-       return -EOPNOTSUPP;
-#endif
 }
 
 static int io_sendmsg(struct io_kiocb *req, bool force_nonblock)
 {
-#if defined(CONFIG_NET)
        struct io_async_msghdr *kmsg = NULL;
        struct socket *sock;
        int ret;
@@ -3581,14 +3577,10 @@ static int io_sendmsg(struct io_kiocb *req, bool force_nonblock)
                req_set_fail_links(req);
        io_put_req(req);
        return 0;
-#else
-       return -EOPNOTSUPP;
-#endif
 }
 
 static int io_send(struct io_kiocb *req, bool force_nonblock)
 {
-#if defined(CONFIG_NET)
        struct socket *sock;
        int ret;
 
@@ -3631,9 +3623,6 @@ static int io_send(struct io_kiocb *req, bool force_nonblock)
                req_set_fail_links(req);
        io_put_req(req);
        return 0;
-#else
-       return -EOPNOTSUPP;
-#endif
 }
 
 static int __io_recvmsg_copy_hdr(struct io_kiocb *req, struct io_async_ctx *io)
@@ -3746,7 +3735,6 @@ static struct io_buffer *io_recv_buffer_select(struct io_kiocb *req,
 static int io_recvmsg_prep(struct io_kiocb *req,
                           const struct io_uring_sqe *sqe)
 {
-#if defined(CONFIG_NET)
        struct io_sr_msg *sr = &req->sr_msg;
        struct io_async_ctx *io = req->io;
        int ret;
@@ -3771,14 +3759,10 @@ static int io_recvmsg_prep(struct io_kiocb *req,
        if (!ret)
                req->flags |= REQ_F_NEED_CLEANUP;
        return ret;
-#else
-       return -EOPNOTSUPP;
-#endif
 }
 
 static int io_recvmsg(struct io_kiocb *req, bool force_nonblock)
 {
-#if defined(CONFIG_NET)
        struct io_async_msghdr *kmsg = NULL;
        struct socket *sock;
        int ret, cflags = 0;
@@ -3839,14 +3823,10 @@ static int io_recvmsg(struct io_kiocb *req, bool force_nonblock)
                req_set_fail_links(req);
        io_put_req(req);
        return 0;
-#else
-       return -EOPNOTSUPP;
-#endif
 }
 
 static int io_recv(struct io_kiocb *req, bool force_nonblock)
 {
-#if defined(CONFIG_NET)
        struct io_buffer *kbuf = NULL;
        struct socket *sock;
        int ret, cflags = 0;
@@ -3903,15 +3883,10 @@ static int io_recv(struct io_kiocb *req, bool force_nonblock)
                req_set_fail_links(req);
        io_put_req(req);
        return 0;
-#else
-       return -EOPNOTSUPP;
-#endif
 }
 
-
 static int io_accept_prep(struct io_kiocb *req, const struct io_uring_sqe *sqe)
 {
-#if defined(CONFIG_NET)
        struct io_accept *accept = &req->accept;
 
        if (unlikely(req->ctx->flags & (IORING_SETUP_IOPOLL|IORING_SETUP_SQPOLL)))
@@ -3923,12 +3898,8 @@ static int io_accept_prep(struct io_kiocb *req, const struct io_uring_sqe *sqe)
        accept->addr_len = u64_to_user_ptr(READ_ONCE(sqe->addr2));
        accept->flags = READ_ONCE(sqe->accept_flags);
        return 0;
-#else
-       return -EOPNOTSUPP;
-#endif
 }
 
-#if defined(CONFIG_NET)
 static int __io_accept(struct io_kiocb *req, bool force_nonblock)
 {
        struct io_accept *accept = &req->accept;
@@ -3958,11 +3929,9 @@ static void io_accept_finish(struct io_wq_work **workptr)
        __io_accept(req, false);
        io_steal_work(req, workptr);
 }
-#endif
 
 static int io_accept(struct io_kiocb *req, bool force_nonblock)
 {
-#if defined(CONFIG_NET)
        int ret;
 
        ret = __io_accept(req, force_nonblock);
@@ -3971,14 +3940,10 @@ static int io_accept(struct io_kiocb *req, bool force_nonblock)
                return -EAGAIN;
        }
        return 0;
-#else
-       return -EOPNOTSUPP;
-#endif
 }
 
 static int io_connect_prep(struct io_kiocb *req, const struct io_uring_sqe *sqe)
 {
-#if defined(CONFIG_NET)
        struct io_connect *conn = &req->connect;
        struct io_async_ctx *io = req->io;
 
@@ -3995,14 +3960,10 @@ static int io_connect_prep(struct io_kiocb *req, const struct io_uring_sqe *sqe)
 
        return move_addr_to_kernel(conn->addr, conn->addr_len,
                                        &io->connect.address);
-#else
-       return -EOPNOTSUPP;
-#endif
 }
 
 static int io_connect(struct io_kiocb *req, bool force_nonblock)
 {
-#if defined(CONFIG_NET)
        struct io_async_ctx __io, *io;
        unsigned file_flags;
        int ret;
@@ -4040,10 +4001,59 @@ out:
        io_cqring_add_event(req, ret);
        io_put_req(req);
        return 0;
-#else
+}
+#else /* !CONFIG_NET */
+static int io_sendmsg_prep(struct io_kiocb *req, const struct io_uring_sqe *sqe)
+{
+       return -EOPNOTSUPP;
+}
+
+static int io_sendmsg(struct io_kiocb *req, bool force_nonblock)
+{
+       return -EOPNOTSUPP;
+}
+
+static int io_send(struct io_kiocb *req, bool force_nonblock)
+{
+       return -EOPNOTSUPP;
+}
+
+static int io_recvmsg_prep(struct io_kiocb *req,
+                          const struct io_uring_sqe *sqe)
+{
+       return -EOPNOTSUPP;
+}
+
+static int io_recvmsg(struct io_kiocb *req, bool force_nonblock)
+{
+       return -EOPNOTSUPP;
+}
+
+static int io_recv(struct io_kiocb *req, bool force_nonblock)
+{
+       return -EOPNOTSUPP;
+}
+
+static int io_accept_prep(struct io_kiocb *req, const struct io_uring_sqe *sqe)
+{
+       return -EOPNOTSUPP;
+}
+
+static int io_accept(struct io_kiocb *req, bool force_nonblock)
+{
+       return -EOPNOTSUPP;
+}
+
+static int io_connect_prep(struct io_kiocb *req, const struct io_uring_sqe *sqe)
+{
+       return -EOPNOTSUPP;
+}
+
+static int io_connect(struct io_kiocb *req, bool force_nonblock)
+{
        return -EOPNOTSUPP;
-#endif
 }
+#endif /* CONFIG_NET */
 
 struct io_poll_table {
        struct poll_table_struct pt;