1 /* SPDX-License-Identifier: GPL-2.0 */ 2 3 #ifndef BTRFS_RELOCATION_H 4 #define BTRFS_RELOCATION_H 5 6 #include <linux/types.h> 7 8 struct extent_buffer; 9 struct btrfs_fs_info; 10 struct btrfs_root; 11 struct btrfs_trans_handle; 12 struct btrfs_ordered_extent; 13 struct btrfs_pending_snapshot; 14 15 static inline bool should_relocate_using_remap_tree(const struct btrfs_block_group *bg) 16 { 17 if (!btrfs_fs_incompat(bg->fs_info, REMAP_TREE)) 18 return false; 19 20 if (bg->flags & (BTRFS_BLOCK_GROUP_SYSTEM | BTRFS_BLOCK_GROUP_METADATA_REMAP)) 21 return false; 22 23 return true; 24 } 25 26 int btrfs_relocate_block_group(struct btrfs_fs_info *fs_info, u64 group_start, 27 bool verbose); 28 int btrfs_init_reloc_root(struct btrfs_trans_handle *trans, struct btrfs_root *root); 29 int btrfs_update_reloc_root(struct btrfs_trans_handle *trans, 30 struct btrfs_root *root); 31 int btrfs_recover_relocation(struct btrfs_fs_info *fs_info); 32 int btrfs_reloc_clone_csums(struct btrfs_ordered_extent *ordered); 33 int btrfs_reloc_cow_block(struct btrfs_trans_handle *trans, 34 struct btrfs_root *root, 35 const struct extent_buffer *buf, 36 struct extent_buffer *cow); 37 void btrfs_reloc_pre_snapshot(struct btrfs_pending_snapshot *pending, 38 u64 *bytes_to_reserve); 39 int btrfs_reloc_post_snapshot(struct btrfs_trans_handle *trans, 40 struct btrfs_pending_snapshot *pending); 41 int btrfs_should_cancel_balance(const struct btrfs_fs_info *fs_info); 42 struct btrfs_root *find_reloc_root(struct btrfs_fs_info *fs_info, u64 bytenr); 43 bool btrfs_should_ignore_reloc_root(const struct btrfs_root *root); 44 u64 btrfs_get_reloc_bg_bytenr(const struct btrfs_fs_info *fs_info); 45 int btrfs_translate_remap(struct btrfs_fs_info *fs_info, u64 *logical, u64 *length); 46 int btrfs_remove_extent_from_remap_tree(struct btrfs_trans_handle *trans, 47 struct btrfs_path *path, 48 u64 bytenr, u64 num_bytes); 49 int btrfs_last_identity_remap_gone(struct btrfs_chunk_map *chunk_map, 50 struct btrfs_block_group *bg); 51 52 #endif 53