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
14 struct io_submitter;
15
16 int 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
20 void vdo_cleanup_io_submitter(struct io_submitter *io_submitter);
21
22 void vdo_free_io_submitter(struct io_submitter *io_submitter);
23
24 void vdo_submit_vio(struct vdo_completion *completion);
25
26 void vdo_submit_data_vio(struct data_vio *data_vio);
27
28 void __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
vdo_submit_metadata_vio(struct vio * vio,physical_block_number_t physical,bio_end_io_t callback,vdo_action_fn error_handler,blk_opf_t operation)32 static 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
vdo_submit_metadata_vio_with_size(struct vio * vio,physical_block_number_t physical,bio_end_io_t callback,vdo_action_fn error_handler,blk_opf_t operation,int size)40 static 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
vdo_submit_flush_vio(struct vio * vio,bio_end_io_t callback,vdo_action_fn error_handler)51 static 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 */
60