1/* SPDX-License-Identifier: GPL-2.0 */
2
3#ifndef BTRFS_DISCARD_H
4#define BTRFS_DISCARD_H
5
6#include <linux/sizes.h>
7
8struct btrfs_fs_info;
9struct btrfs_discard_ctl;
10struct btrfs_block_group;
11
12/* Discard size limits */
13#define BTRFS_ASYNC_DISCARD_DEFAULT_MAX_SIZE		(SZ_64M)
14#define BTRFS_ASYNC_DISCARD_MAX_FILTER			(SZ_1M)
15#define BTRFS_ASYNC_DISCARD_MIN_FILTER			(SZ_32K)
16
17/* List operations */
18void btrfs_discard_check_filter(struct btrfs_block_group *block_group, u64 bytes);
19
20/* Work operations */
21void btrfs_discard_cancel_work(struct btrfs_discard_ctl *discard_ctl,
22			       struct btrfs_block_group *block_group);
23void btrfs_discard_queue_work(struct btrfs_discard_ctl *discard_ctl,
24			      struct btrfs_block_group *block_group);
25void btrfs_discard_schedule_work(struct btrfs_discard_ctl *discard_ctl,
26				 bool override);
27
28/* Update operations */
29void btrfs_discard_calc_delay(struct btrfs_discard_ctl *discard_ctl);
30void btrfs_discard_update_discardable(struct btrfs_block_group *block_group);
31
32/* Setup/cleanup operations */
33void btrfs_discard_punt_unused_bgs_list(struct btrfs_fs_info *fs_info);
34void btrfs_discard_resume(struct btrfs_fs_info *fs_info);
35void btrfs_discard_stop(struct btrfs_fs_info *fs_info);
36void btrfs_discard_init(struct btrfs_fs_info *fs_info);
37void btrfs_discard_cleanup(struct btrfs_fs_info *fs_info);
38
39#endif
40