fs/btrfs/discard.h

0001 /* SPDX-License-Identifier: GPL-2.0 */
0002
0003 #ifndef BTRFS_DISCARD_H
0004 #define BTRFS_DISCARD_H
0005
0006 #include <linux/sizes.h>
0007
0008 struct btrfs_fs_info;
0009 struct btrfs_discard_ctl;
0010 struct btrfs_block_group;
0011
0012 /* Discard size limits */
0013 #define BTRFS_ASYNC_DISCARD_DEFAULT_MAX_SIZE        (SZ_64M)
0014 #define BTRFS_ASYNC_DISCARD_MAX_FILTER          (SZ_1M)
0015 #define BTRFS_ASYNC_DISCARD_MIN_FILTER          (SZ_32K)
0016
0017 /* List operations */
0018 void btrfs_discard_check_filter(struct btrfs_block_group *block_group, u64 bytes);
0019
0020 /* Work operations */
0021 void btrfs_discard_cancel_work(struct btrfs_discard_ctl *discard_ctl,
0022                    struct btrfs_block_group *block_group);
0023 void btrfs_discard_queue_work(struct btrfs_discard_ctl *discard_ctl,
0024                   struct btrfs_block_group *block_group);
0025 void btrfs_discard_schedule_work(struct btrfs_discard_ctl *discard_ctl,
0026                  bool override);
0027 bool btrfs_run_discard_work(struct btrfs_discard_ctl *discard_ctl);
0028
0029 /* Update operations */
0030 void btrfs_discard_calc_delay(struct btrfs_discard_ctl *discard_ctl);
0031 void btrfs_discard_update_discardable(struct btrfs_block_group *block_group);
0032
0033 /* Setup/cleanup operations */
0034 void btrfs_discard_punt_unused_bgs_list(struct btrfs_fs_info *fs_info);
0035 void btrfs_discard_resume(struct btrfs_fs_info *fs_info);
0036 void btrfs_discard_stop(struct btrfs_fs_info *fs_info);
0037 void btrfs_discard_init(struct btrfs_fs_info *fs_info);
0038 void btrfs_discard_cleanup(struct btrfs_fs_info *fs_info);
0039
0040 #endif