1 #ifndef __LINUX__AIO_H 2 #define __LINUX__AIO_H 3 4 #include <linux/list.h> 5 #include <linux/workqueue.h> 6 #include <linux/aio_abi.h> 7 #include <linux/uio.h> 8 #include <linux/rcupdate.h> 9 10 #include <linux/atomic.h> 11 12 struct kioctx; 13 struct kiocb; 14 15 #define KIOCB_KEY 0 16 17 typedef int (kiocb_cancel_fn)(struct kiocb *); 18 19 #define IOCB_EVENTFD (1 << 0) 20 21 struct kiocb { 22 struct file *ki_filp; 23 loff_t ki_pos; 24 void (*ki_complete)(struct kiocb *iocb, long ret, long ret2); 25 void *private; 26 int ki_flags; 27 }; 28 29 static inline bool is_sync_kiocb(struct kiocb *kiocb) 30 { 31 return kiocb->ki_complete == NULL; 32 } 33 34 static inline void init_sync_kiocb(struct kiocb *kiocb, struct file *filp) 35 { 36 *kiocb = (struct kiocb) { 37 .ki_filp = filp, 38 }; 39 } 40 41 /* prototypes */ 42 #ifdef CONFIG_AIO 43 struct mm_struct; 44 extern void exit_aio(struct mm_struct *mm); 45 extern long do_io_submit(aio_context_t ctx_id, long nr, 46 struct iocb __user *__user *iocbpp, bool compat); 47 void kiocb_set_cancel_fn(struct kiocb *req, kiocb_cancel_fn *cancel); 48 #else 49 struct mm_struct; 50 static inline void exit_aio(struct mm_struct *mm) { } 51 static inline long do_io_submit(aio_context_t ctx_id, long nr, 52 struct iocb __user * __user *iocbpp, 53 bool compat) { return 0; } 54 static inline void kiocb_set_cancel_fn(struct kiocb *req, 55 kiocb_cancel_fn *cancel) { } 56 #endif /* CONFIG_AIO */ 57 58 /* for sysctl: */ 59 extern unsigned long aio_nr; 60 extern unsigned long aio_max_nr; 61 62 #endif /* __LINUX__AIO_H */ 63