drivers/md/dm-vdo/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 "types.h"
  12
  13 struct io_submitter;
  14
  15 int vdo_make_io_submitter(unsigned int thread_count, unsigned int rotation_interval,
  16                           unsigned int max_requests_active, struct vdo *vdo,
  17                           struct io_submitter **io_submitter);
  18
  19 void vdo_cleanup_io_submitter(struct io_submitter *io_submitter);
  20
  21 void vdo_free_io_submitter(struct io_submitter *io_submitter);
  22
  23 void vdo_submit_vio(struct vdo_completion *completion);
  24
  25 void vdo_submit_data_vio(struct data_vio *data_vio);
  26
  27 void __submit_metadata_vio(struct vio *vio, physical_block_number_t physical,
  28                            bio_end_io_t callback, vdo_action_fn error_handler,
  29                            blk_opf_t operation, char *data);
  30
  31 static inline void vdo_submit_metadata_vio(struct vio *vio, physical_block_number_t physical,
  32                                            bio_end_io_t callback, vdo_action_fn error_handler,
  33                                            blk_opf_t operation)
  34 {
  35         __submit_metadata_vio(vio, physical, callback, error_handler,
  36                               operation, vio->data);
  37 }
  38
  39 static inline void vdo_submit_flush_vio(struct vio *vio, bio_end_io_t callback,
  40                                         vdo_action_fn error_handler)
  41 {
  42         /* FIXME: Can we just use REQ_OP_FLUSH? */
  43         __submit_metadata_vio(vio, 0, callback, error_handler,
  44                               REQ_OP_WRITE | REQ_PREFLUSH, NULL);
  45 }
  46
  47 #endif /* VDO_IO_SUBMITTER_H */