mirror of
https://github.com/torvalds/linux.git
synced 2025-11-04 02:30:34 +02:00
8fa374f90b
Any opcode that is cancelable ends up defining its own cancel helper for finding and canceling a specific request. Add a generic helper that can be used for this purpose. Signed-off-by: Jens Axboe <axboe@kernel.dk>
45 lines
1.2 KiB
C
45 lines
1.2 KiB
C
// SPDX-License-Identifier: GPL-2.0
|
|
#ifndef IORING_CANCEL_H
|
|
#define IORING_CANCEL_H
|
|
|
|
#include <linux/io_uring_types.h>
|
|
|
|
struct io_cancel_data {
|
|
struct io_ring_ctx *ctx;
|
|
union {
|
|
u64 data;
|
|
struct file *file;
|
|
};
|
|
u8 opcode;
|
|
u32 flags;
|
|
int seq;
|
|
};
|
|
|
|
int io_async_cancel_prep(struct io_kiocb *req, const struct io_uring_sqe *sqe);
|
|
int io_async_cancel(struct io_kiocb *req, unsigned int issue_flags);
|
|
|
|
int io_try_cancel(struct io_uring_task *tctx, struct io_cancel_data *cd,
|
|
unsigned int issue_flags);
|
|
|
|
int io_sync_cancel(struct io_ring_ctx *ctx, void __user *arg);
|
|
bool io_cancel_req_match(struct io_kiocb *req, struct io_cancel_data *cd);
|
|
|
|
bool io_cancel_remove_all(struct io_ring_ctx *ctx, struct io_uring_task *tctx,
|
|
struct hlist_head *list, bool cancel_all,
|
|
bool (*cancel)(struct io_kiocb *));
|
|
|
|
int io_cancel_remove(struct io_ring_ctx *ctx, struct io_cancel_data *cd,
|
|
unsigned int issue_flags, struct hlist_head *list,
|
|
bool (*cancel)(struct io_kiocb *));
|
|
|
|
static inline bool io_cancel_match_sequence(struct io_kiocb *req, int sequence)
|
|
{
|
|
if (req->cancel_seq_set && sequence == req->work.cancel_seq)
|
|
return true;
|
|
|
|
req->cancel_seq_set = true;
|
|
req->work.cancel_seq = sequence;
|
|
return false;
|
|
}
|
|
|
|
#endif
|