mirror of
https://github.com/torvalds/linux.git
synced 2025-11-04 02:30:34 +02:00
bcf8a0293a
In preparation for changing how io_tw_state is passed, introduce a type alias io_tw_token_t for struct io_tw_state *. This allows for changing the representation in one place, without having to update the many functions that just forward their struct io_tw_state * argument. Also add a comment to struct io_tw_state to explain its purpose. Signed-off-by: Caleb Sander Mateos <csander@purestorage.com> Link: https://lore.kernel.org/r/20250217022511.1150145-1-csander@purestorage.com Signed-off-by: Jens Axboe <axboe@kernel.dk>
48 lines
1.2 KiB
C
48 lines
1.2 KiB
C
// SPDX-License-Identifier: GPL-2.0
|
|
|
|
#include <linux/io_uring_types.h>
|
|
|
|
#define IO_POLL_ALLOC_CACHE_MAX 32
|
|
|
|
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 {
|
|
struct io_poll poll;
|
|
struct io_poll *double_poll;
|
|
};
|
|
|
|
/*
|
|
* Must only be called inside issue_flags & IO_URING_F_MULTISHOT, or
|
|
* potentially other cases where we already "own" this poll request.
|
|
*/
|
|
static inline void io_poll_multishot_retry(struct io_kiocb *req)
|
|
{
|
|
atomic_inc(&req->poll_refs);
|
|
}
|
|
|
|
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 io_uring_task *tctx,
|
|
bool cancel_all);
|
|
|
|
void io_poll_task_func(struct io_kiocb *req, io_tw_token_t tw);
|