discard.h 1.4 KB

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  1. /* SPDX-License-Identifier: GPL-2.0 */
  2. #ifndef BTRFS_DISCARD_H
  3. #define BTRFS_DISCARD_H
  4. #include <linux/sizes.h>
  5. struct btrfs_fs_info;
  6. struct btrfs_discard_ctl;
  7. struct btrfs_block_group;
  8. /* Discard size limits */
  9. #define BTRFS_ASYNC_DISCARD_DEFAULT_MAX_SIZE (SZ_64M)
  10. #define BTRFS_ASYNC_DISCARD_MAX_FILTER (SZ_1M)
  11. #define BTRFS_ASYNC_DISCARD_MIN_FILTER (SZ_32K)
  12. /* List operations */
  13. void btrfs_discard_check_filter(struct btrfs_block_group *block_group, u64 bytes);
  14. /* Work operations */
  15. void btrfs_discard_cancel_work(struct btrfs_discard_ctl *discard_ctl,
  16. struct btrfs_block_group *block_group);
  17. void btrfs_discard_queue_work(struct btrfs_discard_ctl *discard_ctl,
  18. struct btrfs_block_group *block_group);
  19. void btrfs_discard_schedule_work(struct btrfs_discard_ctl *discard_ctl,
  20. bool override);
  21. bool btrfs_run_discard_work(struct btrfs_discard_ctl *discard_ctl);
  22. /* Update operations */
  23. void btrfs_discard_calc_delay(struct btrfs_discard_ctl *discard_ctl);
  24. void btrfs_discard_update_discardable(struct btrfs_block_group *block_group,
  25. struct btrfs_free_space_ctl *ctl);
  26. /* Setup/cleanup operations */
  27. void btrfs_discard_punt_unused_bgs_list(struct btrfs_fs_info *fs_info);
  28. void btrfs_discard_resume(struct btrfs_fs_info *fs_info);
  29. void btrfs_discard_stop(struct btrfs_fs_info *fs_info);
  30. void btrfs_discard_init(struct btrfs_fs_info *fs_info);
  31. void btrfs_discard_cleanup(struct btrfs_fs_info *fs_info);
  32. #endif