io_uring: move a few private types to local headers

Commit 3a3d47fa9cfd ("io_uring: make io_uring_types.h public") moved
a bunch of io_uring types to a kernel wide header, so we could make
tracing a bit saner rather than pass in a ton of arguments.

However, there are a few types in there that are not really needed to
be system wide. Move the cancel data and mapped buffers back to the
appropriate io_uring local headers.

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

include/linux/io_uring_types.h

@@ -528,27 +528,9 @@ struct io_kiocb {
 	struct io_wq_work		work;
 };
 
-struct io_cancel_data {
-	struct io_ring_ctx *ctx;
-	union {
-		u64 data;
-		struct file *file;
-	};
-	u32 flags;
-	int seq;
-};
-
 struct io_overflow_cqe {
 	struct list_head list;
 	struct io_uring_cqe cqe;
 };
 
-struct io_mapped_ubuf {
-	u64		ubuf;
-	u64		ubuf_end;
-	unsigned int	nr_bvecs;
-	unsigned long	acct_pages;
-	struct bio_vec	bvec[];
-};
-
 #endif

io_uring/cancel.h

@@ -1,5 +1,18 @@
 // SPDX-License-Identifier: GPL-2.0
 
+#include <linux/io_uring_types.h>
+
+struct io_cancel_data {
+	struct io_ring_ctx *ctx;
+	union {
+		u64 data;
+		struct file *file;
+	};
+	u32 flags;
+	int seq;
+};
+
+
 int io_async_cancel_prep(struct io_kiocb *req, const struct io_uring_sqe *sqe);
 int io_async_cancel(struct io_kiocb *req, unsigned int issue_flags);
 

io_uring/fdinfo.c

@@ -13,6 +13,7 @@
 #include "sqpoll.h"
 #include "fdinfo.h"
 #include "cancel.h"
+#include "rsrc.h"
 
 #ifdef CONFIG_PROC_FS
 static __cold int io_uring_show_cred(struct seq_file *m, unsigned int id,

io_uring/poll.h

@@ -24,6 +24,7 @@ int io_poll_add(struct io_kiocb *req, unsigned int issue_flags);
 int io_poll_remove_prep(struct io_kiocb *req, const struct io_uring_sqe *sqe);
 int io_poll_remove(struct io_kiocb *req, unsigned int issue_flags);
 
+struct io_cancel_data;
 int io_poll_cancel(struct io_ring_ctx *ctx, struct io_cancel_data *cd,
 		   unsigned issue_flags);
 int io_arm_poll_handler(struct io_kiocb *req, unsigned issue_flags);

io_uring/rsrc.h

@@ -45,6 +45,14 @@ struct io_rsrc_node {
 	bool				done;
 };
 
+struct io_mapped_ubuf {
+	u64		ubuf;
+	u64		ubuf_end;
+	unsigned int	nr_bvecs;
+	unsigned long	acct_pages;
+	struct bio_vec	bvec[];
+};
+
 void io_rsrc_put_work(struct work_struct *work);
 void io_rsrc_refs_refill(struct io_ring_ctx *ctx);
 void io_wait_rsrc_data(struct io_rsrc_data *data);

io_uring/timeout.h

@@ -22,6 +22,7 @@ static inline struct io_kiocb *io_disarm_linked_timeout(struct io_kiocb *req)
 }
 
 __cold void io_flush_timeouts(struct io_ring_ctx *ctx);
+struct io_cancel_data;
 int io_timeout_cancel(struct io_ring_ctx *ctx, struct io_cancel_data *cd);
 __cold bool io_kill_timeouts(struct io_ring_ctx *ctx, struct task_struct *tsk,
 			     bool cancel_all);