io-submitter.h

 1/* SPDX-License-Identifier: GPL-2.0-only */
 2/*
 3 * Copyright 2023 Red Hat
 4 */
 5
 6#ifndef VDO_IO_SUBMITTER_H
 7#define VDO_IO_SUBMITTER_H
 8
 9#include <linux/bio.h>
10
11#include "constants.h"
12#include "types.h"
13
14struct io_submitter;
15
16int vdo_make_io_submitter(unsigned int thread_count, unsigned int rotation_interval,
17			  unsigned int max_requests_active, struct vdo *vdo,
18			  struct io_submitter **io_submitter);
19
20void vdo_cleanup_io_submitter(struct io_submitter *io_submitter);
21
22void vdo_free_io_submitter(struct io_submitter *io_submitter);
23
24void vdo_submit_vio(struct vdo_completion *completion);
25
26void vdo_submit_data_vio(struct data_vio *data_vio);
27
28void __submit_metadata_vio(struct vio *vio, physical_block_number_t physical,
29			   bio_end_io_t callback, vdo_action_fn error_handler,
30			   blk_opf_t operation, char *data, int size);
31
32static inline void vdo_submit_metadata_vio(struct vio *vio, physical_block_number_t physical,
33					   bio_end_io_t callback, vdo_action_fn error_handler,
34					   blk_opf_t operation)
35{
36	__submit_metadata_vio(vio, physical, callback, error_handler,
37			      operation, vio->data, vio->block_count * VDO_BLOCK_SIZE);
38}
39
40static inline void vdo_submit_metadata_vio_with_size(struct vio *vio,
41						     physical_block_number_t physical,
42						     bio_end_io_t callback,
43						     vdo_action_fn error_handler,
44						     blk_opf_t operation,
45						     int size)
46{
47	__submit_metadata_vio(vio, physical, callback, error_handler,
48			      operation, vio->data, size);
49}
50
51static inline void vdo_submit_flush_vio(struct vio *vio, bio_end_io_t callback,
52					vdo_action_fn error_handler)
53{
54	/* FIXME: Can we just use REQ_OP_FLUSH? */
55	__submit_metadata_vio(vio, 0, callback, error_handler,
56			      REQ_OP_WRITE | REQ_PREFLUSH, NULL, 0);
57}
58
59#endif /* VDO_IO_SUBMITTER_H */