diff options
Diffstat (limited to 'include/linux/aio.h')
| -rw-r--r-- | include/linux/aio.h | 17 |
1 files changed, 16 insertions, 1 deletions
diff --git a/include/linux/aio.h b/include/linux/aio.h index d9c92daa3944..9f4b10a81f8a 100644 --- a/include/linux/aio.h +++ b/include/linux/aio.h @@ -31,13 +31,15 @@ typedef int (kiocb_cancel_fn)(struct kiocb *); struct kiocb { struct file *ki_filp; - struct kioctx *ki_ctx; /* NULL for sync ops */ + struct kioctx *ki_ctx; /* NULL for sync ops, + * -1 for kernel caller */ kiocb_cancel_fn *ki_cancel; void *private; union { void __user *user; struct task_struct *tsk; + void (*complete)(u64 user_data, long res); } ki_obj; __u64 ki_user_data; /* user's data for completion */ @@ -59,6 +61,11 @@ static inline bool is_sync_kiocb(struct kiocb *kiocb) return kiocb->ki_ctx == NULL; } +static inline bool is_kernel_kiocb(struct kiocb *kiocb) +{ + return kiocb->ki_ctx == (void *)-1; +} + static inline void init_sync_kiocb(struct kiocb *kiocb, struct file *filp) { *kiocb = (struct kiocb) { @@ -77,6 +84,14 @@ 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); +struct kiocb *aio_kernel_alloc(gfp_t gfp); +void aio_kernel_free(struct kiocb *iocb); +void aio_kernel_init_rw(struct kiocb *iocb, struct file *filp, size_t nr, + loff_t off); +void aio_kernel_init_callback(struct kiocb *iocb, + void (*complete)(u64 user_data, long res), + u64 user_data); +int aio_kernel_submit(struct kiocb *iocb, unsigned short op, void *ptr); #else static inline ssize_t wait_on_sync_kiocb(struct kiocb *iocb) { return 0; } static inline void aio_complete(struct kiocb *iocb, long res, long res2) { } |