--- zzzz-none-000/linux-3.10.107/include/linux/aio.h	2017-06-27 09:49:32.000000000 +0000
+++ scorpion-7490-727/linux-3.10.107/include/linux/aio.h	2021-02-04 17:41:59.000000000 +0000
@@ -1,101 +1,23 @@
 #ifndef __LINUX__AIO_H
 #define __LINUX__AIO_H
 
-#include <linux/list.h>
-#include <linux/workqueue.h>
 #include <linux/aio_abi.h>
-#include <linux/uio.h>
-#include <linux/rcupdate.h>
-
-#include <linux/atomic.h>
 
 struct kioctx;
 struct kiocb;
+struct mm_struct;
 
 #define KIOCB_KEY		0
 
-/*
- * We use ki_cancel == KIOCB_CANCELLED to indicate that a kiocb has been either
- * cancelled or completed (this makes a certain amount of sense because
- * successful cancellation - io_cancel() - does deliver the completion to
- * userspace).
- *
- * And since most things don't implement kiocb cancellation and we'd really like
- * kiocb completion to be lockless when possible, we use ki_cancel to
- * synchronize cancellation and completion - we only set it to KIOCB_CANCELLED
- * with xchg() or cmpxchg(), see batch_complete_aio() and kiocb_cancel().
- */
-#define KIOCB_CANCELLED		((void *) (~0ULL))
-
-typedef int (kiocb_cancel_fn)(struct kiocb *, struct io_event *);
-
-struct kiocb {
-	atomic_t		ki_users;
-
-	struct file		*ki_filp;
-	struct kioctx		*ki_ctx;	/* NULL for sync ops */
-	kiocb_cancel_fn		*ki_cancel;
-	void			(*ki_dtor)(struct kiocb *);
-
-	union {
-		void __user		*user;
-		struct task_struct	*tsk;
-	} ki_obj;
-
-	__u64			ki_user_data;	/* user's data for completion */
-	loff_t			ki_pos;
-
-	void			*private;
-	/* State that we remember to be able to restart/retry  */
-	unsigned short		ki_opcode;
-	size_t			ki_nbytes; 	/* copy of iocb->aio_nbytes */
-	char 			__user *ki_buf;	/* remaining iocb->aio_buf */
-	size_t			ki_left; 	/* remaining bytes */
-	struct iovec		ki_inline_vec;	/* inline vector */
- 	struct iovec		*ki_iovec;
- 	unsigned long		ki_nr_segs;
- 	unsigned long		ki_cur_seg;
-
-	struct list_head	ki_list;	/* the aio core uses this
-						 * for cancellation */
-
-	/*
-	 * If the aio_resfd field of the userspace iocb is not zero,
-	 * this is the underlying eventfd context to deliver events to.
-	 */
-	struct eventfd_ctx	*ki_eventfd;
-};
-
-static inline bool is_sync_kiocb(struct kiocb *kiocb)
-{
-	return kiocb->ki_ctx == NULL;
-}
-
-static inline void init_sync_kiocb(struct kiocb *kiocb, struct file *filp)
-{
-	*kiocb = (struct kiocb) {
-			.ki_users = ATOMIC_INIT(1),
-			.ki_ctx = NULL,
-			.ki_filp = filp,
-			.ki_obj.tsk = current,
-		};
-}
+typedef int (kiocb_cancel_fn)(struct kiocb *);
 
 /* prototypes */
 #ifdef CONFIG_AIO
-extern ssize_t wait_on_sync_kiocb(struct kiocb *iocb);
-extern void aio_put_req(struct kiocb *iocb);
-extern void aio_complete(struct kiocb *iocb, long res, long res2);
-struct mm_struct;
 extern void exit_aio(struct mm_struct *mm);
 extern long do_io_submit(aio_context_t ctx_id, long nr,
 			 struct iocb __user *__user *iocbpp, bool compat);
 void kiocb_set_cancel_fn(struct kiocb *req, kiocb_cancel_fn *cancel);
 #else
-static inline ssize_t wait_on_sync_kiocb(struct kiocb *iocb) { return 0; }
-static inline void aio_put_req(struct kiocb *iocb) { }
-static inline void aio_complete(struct kiocb *iocb, long res, long res2) { }
-struct mm_struct;
 static inline void exit_aio(struct mm_struct *mm) { }
 static inline long do_io_submit(aio_context_t ctx_id, long nr,
 				struct iocb __user * __user *iocbpp,
@@ -104,11 +26,6 @@
 				       kiocb_cancel_fn *cancel) { }
 #endif /* CONFIG_AIO */
 
-static inline struct kiocb *list_kiocb(struct list_head *h)
-{
-	return list_entry(h, struct kiocb, ki_list);
-}
-
 /* for sysctl: */
 extern unsigned long aio_nr;
 extern unsigned long aio_max_nr;