|  | /* SPDX-License-Identifier: GPL-2.0 */ | 
|  | #ifndef __LINUX__AIO_H | 
|  | #define __LINUX__AIO_H | 
|  |  | 
|  | #include <linux/aio_abi.h> | 
|  |  | 
|  | struct kioctx; | 
|  | struct kiocb; | 
|  | struct mm_struct; | 
|  |  | 
|  | typedef int (kiocb_cancel_fn)(struct kiocb *); | 
|  |  | 
|  | /* prototypes */ | 
|  | #ifdef CONFIG_AIO | 
|  | extern void exit_aio(struct mm_struct *mm); | 
|  | void kiocb_set_cancel_fn(struct kiocb *req, kiocb_cancel_fn *cancel); | 
|  | #else | 
|  | static inline void exit_aio(struct mm_struct *mm) { } | 
|  | static inline void kiocb_set_cancel_fn(struct kiocb *req, | 
|  | kiocb_cancel_fn *cancel) { } | 
|  | #endif /* CONFIG_AIO */ | 
|  |  | 
|  | /* for sysctl: */ | 
|  | extern unsigned long aio_nr; | 
|  | extern unsigned long aio_max_nr; | 
|  |  | 
|  | #endif /* __LINUX__AIO_H */ |