[linux-block.git] / io_uring / poll.h

// SPDX-License-Identifier: GPL-2.0

#include "alloc_cache.h"

enum {
	IO_APOLL_OK,
	IO_APOLL_ABORTED,
	IO_APOLL_READY
};

struct io_poll {
	struct file			*file;
	struct wait_queue_head		*head;
	__poll_t			events;
	int				retries;
	struct wait_queue_entry		wait;
};

struct async_poll {
	union {
		struct io_poll		poll;
		struct io_cache_entry	cache;
	};
	struct io_poll		*double_poll;
};

int io_poll_add_prep(struct io_kiocb *req, const struct io_uring_sqe *sqe);
int io_poll_add(struct io_kiocb *req, unsigned int issue_flags);

int io_poll_remove_prep(struct io_kiocb *req, const struct io_uring_sqe *sqe);
int io_poll_remove(struct io_kiocb *req, unsigned int issue_flags);

struct io_cancel_data;
int io_poll_cancel(struct io_ring_ctx *ctx, struct io_cancel_data *cd,
		   unsigned issue_flags);
int io_arm_poll_handler(struct io_kiocb *req, unsigned issue_flags);
bool io_poll_remove_all(struct io_ring_ctx *ctx, struct task_struct *tsk,
			bool cancel_all);

void io_apoll_cache_free(struct io_cache_entry *entry);
Commit	Line	Data
329061d3 JA	1	// SPDX-License-Identifier: GPL-2.0
329061d3 JA	2
9b797a37 JA	3	#include "alloc_cache.h"
9b797a37 JA	4
329061d3 JA	5	enum {
	6	IO_APOLL_OK,
	7	IO_APOLL_ABORTED,
	8	IO_APOLL_READY
	9	};
	10
	11	struct io_poll {
	12	struct file *file;
	13	struct wait_queue_head *head;
	14	__poll_t events;
c16bda37	15	int retries;
329061d3 JA	16	struct wait_queue_entry wait;
	17	};
	18
	19	struct async_poll {
9b797a37 JA	20	union {
	21	struct io_poll poll;
	22	struct io_cache_entry cache;
	23	};
329061d3 JA	24	struct io_poll *double_poll;
	25	};
	26
	27	int io_poll_add_prep(struct io_kiocb req, const struct io_uring_sqe sqe);
	28	int io_poll_add(struct io_kiocb *req, unsigned int issue_flags);
	29
	30	int io_poll_remove_prep(struct io_kiocb req, const struct io_uring_sqe sqe);
	31	int io_poll_remove(struct io_kiocb *req, unsigned int issue_flags);
	32
ad163a7e	33	struct io_cancel_data;
5d7943d9 PB	34	int io_poll_cancel(struct io_ring_ctx ctx, struct io_cancel_data cd,
5d7943d9 PB	35	unsigned issue_flags);
329061d3 JA	36	int io_arm_poll_handler(struct io_kiocb *req, unsigned issue_flags);
	37	bool io_poll_remove_all(struct io_ring_ctx ctx, struct task_struct tsk,
	38	bool cancel_all);
9da7471e	39
9b797a37	40	void io_apoll_cache_free(struct io_cache_entry *entry);