| Nishad Kamdar | 317ddf3 | 2020-04-19 20:06:44 +0530 | [diff] [blame] | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
| Dennis Zhou | b0643e5 | 2019-12-13 16:22:14 -0800 | [diff] [blame] | 2 | |
| 3 | #ifndef BTRFS_DISCARD_H |
| 4 | #define BTRFS_DISCARD_H |
| 5 | |
| Dennis Zhou | 4aa9ad5 | 2020-01-02 16:26:37 -0500 | [diff] [blame] | 6 | #include <linux/sizes.h> |
| 7 | |
| Dennis Zhou | b0643e5 | 2019-12-13 16:22:14 -0800 | [diff] [blame] | 8 | struct btrfs_fs_info; |
| 9 | struct btrfs_discard_ctl; |
| 10 | struct btrfs_block_group; |
| 11 | |
| Dennis Zhou | 4aa9ad5 | 2020-01-02 16:26:37 -0500 | [diff] [blame] | 12 | /* Discard size limits */ |
| Dennis Zhou | 19b2a2c | 2020-01-02 16:26:38 -0500 | [diff] [blame] | 13 | #define BTRFS_ASYNC_DISCARD_DEFAULT_MAX_SIZE (SZ_64M) |
| Dennis Zhou | 7fe6d45 | 2020-01-02 16:26:39 -0500 | [diff] [blame] | 14 | #define BTRFS_ASYNC_DISCARD_MAX_FILTER (SZ_1M) |
| 15 | #define BTRFS_ASYNC_DISCARD_MIN_FILTER (SZ_32K) |
| 16 | |
| 17 | /* List operations */ |
| 18 | void btrfs_discard_check_filter(struct btrfs_block_group *block_group, u64 bytes); |
| Dennis Zhou | 4aa9ad5 | 2020-01-02 16:26:37 -0500 | [diff] [blame] | 19 | |
| Dennis Zhou | 6e80d4f | 2019-12-13 16:22:15 -0800 | [diff] [blame] | 20 | /* Work operations */ |
| Dennis Zhou | b0643e5 | 2019-12-13 16:22:14 -0800 | [diff] [blame] | 21 | void btrfs_discard_cancel_work(struct btrfs_discard_ctl *discard_ctl, |
| 22 | struct btrfs_block_group *block_group); |
| 23 | void btrfs_discard_queue_work(struct btrfs_discard_ctl *discard_ctl, |
| 24 | struct btrfs_block_group *block_group); |
| 25 | void btrfs_discard_schedule_work(struct btrfs_discard_ctl *discard_ctl, |
| 26 | bool override); |
| 27 | bool btrfs_run_discard_work(struct btrfs_discard_ctl *discard_ctl); |
| 28 | |
| Dennis Zhou | dfb79dd | 2019-12-13 16:22:20 -0800 | [diff] [blame] | 29 | /* Update operations */ |
| Dennis Zhou | a230930 | 2020-01-02 16:26:35 -0500 | [diff] [blame] | 30 | void btrfs_discard_calc_delay(struct btrfs_discard_ctl *discard_ctl); |
| Josef Bacik | 66b53ba | 2020-10-23 09:58:07 -0400 | [diff] [blame] | 31 | void btrfs_discard_update_discardable(struct btrfs_block_group *block_group); |
| Dennis Zhou | dfb79dd | 2019-12-13 16:22:20 -0800 | [diff] [blame] | 32 | |
| Dennis Zhou | 6e80d4f | 2019-12-13 16:22:15 -0800 | [diff] [blame] | 33 | /* Setup/cleanup operations */ |
| 34 | void btrfs_discard_punt_unused_bgs_list(struct btrfs_fs_info *fs_info); |
| Dennis Zhou | b0643e5 | 2019-12-13 16:22:14 -0800 | [diff] [blame] | 35 | void btrfs_discard_resume(struct btrfs_fs_info *fs_info); |
| 36 | void btrfs_discard_stop(struct btrfs_fs_info *fs_info); |
| 37 | void btrfs_discard_init(struct btrfs_fs_info *fs_info); |
| 38 | void btrfs_discard_cleanup(struct btrfs_fs_info *fs_info); |
| 39 | |
| 40 | #endif |