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torvalds
GitHub Repository: torvalds/linux
 Path: blob/master/fs/btrfs/discard.h
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/* SPDX-License-Identifier: GPL-2.0 */

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#ifndef BTRFS_DISCARD_H

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#define BTRFS_DISCARD_H

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#include <linux/types.h>

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#include <linux/sizes.h>

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struct btrfs_fs_info;

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struct btrfs_discard_ctl;

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struct btrfs_block_group;

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/* Discard size limits */

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#define BTRFS_ASYNC_DISCARD_DEFAULT_MAX_SIZE		(SZ_64M)

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#define BTRFS_ASYNC_DISCARD_MAX_FILTER			(SZ_1M)

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#define BTRFS_ASYNC_DISCARD_MIN_FILTER			(SZ_32K)

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/* List operations */

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void btrfs_discard_check_filter(struct btrfs_block_group *block_group, u64 bytes);

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/* Work operations */

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void btrfs_discard_cancel_work(struct btrfs_discard_ctl *discard_ctl,

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			       struct btrfs_block_group *block_group);

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void btrfs_discard_queue_work(struct btrfs_discard_ctl *discard_ctl,

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			      struct btrfs_block_group *block_group);

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void btrfs_discard_schedule_work(struct btrfs_discard_ctl *discard_ctl,

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				 bool override);

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/* Update operations */

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void btrfs_discard_calc_delay(struct btrfs_discard_ctl *discard_ctl);

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void btrfs_discard_update_discardable(struct btrfs_block_group *block_group);

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/* Setup/cleanup operations */

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void btrfs_discard_punt_unused_bgs_list(struct btrfs_fs_info *fs_info);

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void btrfs_discard_resume(struct btrfs_fs_info *fs_info);

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void btrfs_discard_stop(struct btrfs_fs_info *fs_info);

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void btrfs_discard_init(struct btrfs_fs_info *fs_info);

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void btrfs_discard_cleanup(struct btrfs_fs_info *fs_info);

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#endif

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