include/linux/aio.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #ifndef __LINUX__AIO_H
   3 #define __LINUX__AIO_H
   4
   5 #include <linux/aio_abi.h>
   6
   7 struct kioctx;
   8 struct kiocb;
   9 struct mm_struct;
  10
  11 #define KIOCB_KEY               0
  12
  13 typedef int (kiocb_cancel_fn)(struct kiocb *);
  14
  15 /* prototypes */
  16 #ifdef CONFIG_AIO
  17 extern void exit_aio(struct mm_struct *mm);
  18 void kiocb_set_cancel_fn(struct kiocb *req, kiocb_cancel_fn *cancel);
  19 #else
  20 static inline void exit_aio(struct mm_struct *mm) { }
  21 static inline void kiocb_set_cancel_fn(struct kiocb *req,
  22                                        kiocb_cancel_fn *cancel) { }
  23 #endif /* CONFIG_AIO */
  24
  25 /* for sysctl: */
  26 extern unsigned long aio_nr;
  27 extern unsigned long aio_max_nr;
  28
  29 #endif /* __LINUX__AIO_H */