diff options
Diffstat (limited to 'fs/btrfs/discard.h')
| -rw-r--r-- | fs/btrfs/discard.h | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/fs/btrfs/discard.h b/fs/btrfs/discard.h new file mode 100644 index 000000000000..21a15776dac4 --- /dev/null +++ b/fs/btrfs/discard.h @@ -0,0 +1,41 @@ +// SPDX-License-Identifier: GPL-2.0 + +#ifndef BTRFS_DISCARD_H +#define BTRFS_DISCARD_H + +#include <linux/sizes.h> + +struct btrfs_fs_info; +struct btrfs_discard_ctl; +struct btrfs_block_group; + +/* Discard size limits */ +#define BTRFS_ASYNC_DISCARD_DEFAULT_MAX_SIZE (SZ_64M) +#define BTRFS_ASYNC_DISCARD_MAX_FILTER (SZ_1M) +#define BTRFS_ASYNC_DISCARD_MIN_FILTER (SZ_32K) + +/* List operations */ +void btrfs_discard_check_filter(struct btrfs_block_group *block_group, u64 bytes); + +/* Work operations */ +void btrfs_discard_cancel_work(struct btrfs_discard_ctl *discard_ctl, + struct btrfs_block_group *block_group); +void btrfs_discard_queue_work(struct btrfs_discard_ctl *discard_ctl, + struct btrfs_block_group *block_group); +void btrfs_discard_schedule_work(struct btrfs_discard_ctl *discard_ctl, + bool override); +bool btrfs_run_discard_work(struct btrfs_discard_ctl *discard_ctl); + +/* Update operations */ +void btrfs_discard_calc_delay(struct btrfs_discard_ctl *discard_ctl); +void btrfs_discard_update_discardable(struct btrfs_block_group *block_group, + struct btrfs_free_space_ctl *ctl); + +/* Setup/cleanup operations */ +void btrfs_discard_punt_unused_bgs_list(struct btrfs_fs_info *fs_info); +void btrfs_discard_resume(struct btrfs_fs_info *fs_info); +void btrfs_discard_stop(struct btrfs_fs_info *fs_info); +void btrfs_discard_init(struct btrfs_fs_info *fs_info); +void btrfs_discard_cleanup(struct btrfs_fs_info *fs_info); + +#endif |