Merge tag 'for-6.11/io_uring-20240714' of git://git.kernel.dk/linux

Pull io_uring updates from Jens Axboe:
 "Here are the io_uring updates queued up for 6.11.

  Nothing major this time around, various minor improvements and
  cleanups/fixes. This contains:

   - Add bind/listen opcodes. Main motivation is to support direct
     descriptors, to avoid needing a regular fd just for doing these two
     operations (Gabriel)

   - Probe fixes (Gabriel)

   - Treat io-wq work flags as atomics. Not fixing a real issue, but may
     as well and it silences a KCSAN warning (me)

   - Cleanup of rsrc __set_current_state() usage (me)

   - Add 64-bit for {m,f}advise operations (me)

   - Improve performance of data ring messages (me)

   - Fix for ring message overflow posting (Pavel)

   - Fix for freezer interaction with TWA_NOTIFY_SIGNAL. Not strictly an
     io_uring thing, but since TWA_NOTIFY_SIGNAL was originally added
     for faster task_work signaling for io_uring, bundling it with this
     pull (Pavel)

   - Add Pavel as a co-maintainer

   - Various cleanups (me, Thorsten)"

* tag 'for-6.11/io_uring-20240714' of git://git.kernel.dk/linux: (28 commits)
  io_uring/net: check socket is valid in io_bind()/io_listen()
  kernel: rerun task_work while freezing in get_signal()
  io_uring/io-wq: limit retrying worker initialisation
  io_uring/napi: Remove unnecessary s64 cast
  io_uring/net: cleanup io_recv_finish() bundle handling
  io_uring/msg_ring: fix overflow posting
  MAINTAINERS: change Pavel Begunkov from io_uring reviewer to maintainer
  io_uring/msg_ring: use kmem_cache_free() to free request
  io_uring/msg_ring: check for dead submitter task
  io_uring/msg_ring: add an alloc cache for io_kiocb entries
  io_uring/msg_ring: improve handling of target CQE posting
  io_uring: add io_add_aux_cqe() helper
  io_uring: add remote task_work execution helper
  io_uring/msg_ring: tighten requirement for remote posting
  io_uring: Allocate only necessary memory in io_probe
  io_uring: Fix probe of disabled operations
  io_uring: Introduce IORING_OP_LISTEN
  io_uring: Introduce IORING_OP_BIND
  net: Split a __sys_listen helper for io_uring
  net: Split a __sys_bind helper for io_uring
  ...

3 files changed, 9 insertions, 10 deletions

diff --git a/include/linux/io_uring_types.h b/include/linux/io_uring_types.h
index 7abdc0927124..3bb6198d1523 100644
--- a/include/linux/io_uring_types.h
+++ b/include/linux/io_uring_types.h
@@ -50,7 +50,7 @@ struct io_wq_work_list {
 
 struct io_wq_work {
 	struct io_wq_work_node list;
-	unsigned flags;
+	atomic_t flags;
 	/* place it here instead of io_kiocb as it fills padding and saves 4B */
 	int cancel_seq;
 };
@@ -210,14 +210,6 @@ struct io_submit_state {
 	struct blk_plug		plug;
 };
 
-struct io_ev_fd {
-	struct eventfd_ctx	*cq_ev_fd;
-	unsigned int		eventfd_async: 1;
-	struct rcu_head		rcu;
-	atomic_t		refs;
-	atomic_t		ops;
-};
-
 struct io_alloc_cache {
 	void			**entries;
 	unsigned int		nr_cached;
@@ -372,7 +364,6 @@ struct io_ring_ctx {
 	struct io_restriction		restrictions;
 
 	/* slow path rsrc auxilary data, used by update/register */
-	struct io_mapped_ubuf		*dummy_ubuf;
 	struct io_rsrc_data		*file_data;
 	struct io_rsrc_data		*buf_data;
 
@@ -405,6 +396,9 @@ struct io_ring_ctx {
 	struct callback_head		poll_wq_task_work;
 	struct list_head		defer_list;
 
+	struct io_alloc_cache		msg_cache;
+	spinlock_t			msg_lock;
+
 #ifdef CONFIG_NET_RX_BUSY_POLL
 	struct list_head	napi_list;	/* track busy poll napi_id */
 	spinlock_t		napi_lock;	/* napi_list lock */
diff --git a/include/linux/socket.h b/include/linux/socket.h
index 89d16b90370b..c1f16cdab677 100644
--- a/include/linux/socket.h
+++ b/include/linux/socket.h
@@ -442,11 +442,14 @@ extern int __sys_accept4(int fd, struct sockaddr __user *upeer_sockaddr,
 extern int __sys_socket(int family, int type, int protocol);
 extern struct file *__sys_socket_file(int family, int type, int protocol);
 extern int __sys_bind(int fd, struct sockaddr __user *umyaddr, int addrlen);
+extern int __sys_bind_socket(struct socket *sock, struct sockaddr_storage *address,
+			     int addrlen);
 extern int __sys_connect_file(struct file *file, struct sockaddr_storage *addr,
 			      int addrlen, int file_flags);
 extern int __sys_connect(int fd, struct sockaddr __user *uservaddr,
 			 int addrlen);
 extern int __sys_listen(int fd, int backlog);
+extern int __sys_listen_socket(struct socket *sock, int backlog);
 extern int __sys_getsockname(int fd, struct sockaddr __user *usockaddr,
 			     int __user *usockaddr_len);
 extern int __sys_getpeername(int fd, struct sockaddr __user *usockaddr,
diff --git a/include/uapi/linux/io_uring.h b/include/uapi/linux/io_uring.h
index 994bf7af0efe..2aaf7ee256ac 100644
--- a/include/uapi/linux/io_uring.h
+++ b/include/uapi/linux/io_uring.h
@@ -257,6 +257,8 @@ enum io_uring_op {
 	IORING_OP_FUTEX_WAITV,
 	IORING_OP_FIXED_FD_INSTALL,
 	IORING_OP_FTRUNCATE,
+	IORING_OP_BIND,
+	IORING_OP_LISTEN,
 
 	/* this goes last, obviously */
 	IORING_OP_LAST,