fs/btrfs/relocation.h

/* SPDX-License-Identifier: GPL-2.0 */

#ifndef BTRFS_RELOCATION_H
#define BTRFS_RELOCATION_H

#include <linux/types.h>

struct extent_buffer;
struct btrfs_fs_info;
struct btrfs_root;
struct btrfs_trans_handle;
struct btrfs_ordered_extent;
struct btrfs_pending_snapshot;

static inline bool should_relocate_using_remap_tree(const struct btrfs_block_group *bg)
{
	if (!btrfs_fs_incompat(bg->fs_info, REMAP_TREE))
		return false;

	if (bg->flags & (BTRFS_BLOCK_GROUP_SYSTEM | BTRFS_BLOCK_GROUP_METADATA_REMAP))
		return false;

	return true;
}

int btrfs_relocate_block_group(struct btrfs_fs_info *fs_info, u64 group_start,
			       bool verbose);
int btrfs_init_reloc_root(struct btrfs_trans_handle *trans, struct btrfs_root *root);
int btrfs_update_reloc_root(struct btrfs_trans_handle *trans,
			    struct btrfs_root *root);
int btrfs_recover_relocation(struct btrfs_fs_info *fs_info);
int btrfs_reloc_clone_csums(struct btrfs_ordered_extent *ordered);
int btrfs_reloc_cow_block(struct btrfs_trans_handle *trans,
			  struct btrfs_root *root,
			  const struct extent_buffer *buf,
			  struct extent_buffer *cow);
void btrfs_reloc_pre_snapshot(struct btrfs_pending_snapshot *pending,
			      u64 *bytes_to_reserve);
int btrfs_reloc_post_snapshot(struct btrfs_trans_handle *trans,
			      struct btrfs_pending_snapshot *pending);
int btrfs_should_cancel_balance(const struct btrfs_fs_info *fs_info);
struct btrfs_root *find_reloc_root(struct btrfs_fs_info *fs_info, u64 bytenr);
bool btrfs_should_ignore_reloc_root(const struct btrfs_root *root);
u64 btrfs_get_reloc_bg_bytenr(const struct btrfs_fs_info *fs_info);
int btrfs_translate_remap(struct btrfs_fs_info *fs_info, u64 *logical, u64 *length);
int btrfs_remove_extent_from_remap_tree(struct btrfs_trans_handle *trans,
					struct btrfs_path *path,
					u64 bytenr, u64 num_bytes);
int btrfs_last_identity_remap_gone(struct btrfs_chunk_map *chunk_map,
				   struct btrfs_block_group *bg);

#endif