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1/* SPDX-License-Identifier: GPL-2.0 */2 3#ifndef BTRFS_DISCARD_H4#define BTRFS_DISCARD_H5 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#endif40