diff options
| author | Nikolay Borisov <nborisov@suse.com> | 2018-10-01 17:46:16 +0300 |
|---|---|---|
| committer | David Sterba <dsterba@suse.com> | 2018-10-25 16:11:39 +0200 |
| commit | 8c028efe4a31e15c0d106daf6218dedc373273c6 (patch) | |
| tree | 58d6efe31920b5112e8b6c4ab5bdcaf334b09626 /free-space-tree.h | |
| parent | a9ce9286f24b299ea2a8465d89cee659c3f5dcf1 (diff) | |
btrfs-progs: Pull free space tree related code from kernel
To help implement free space tree checker in user space some kernel
function are necessary, namely iterating/deleting/adding freespace
items, some internal search functions. Functions to populate a block
group based on the extent tree. The code is largely copy/paste from
the kernel with locking eliminated (i.e free_space_lock). It supports
reading/writing of both bitmap and extent based FST trees.
Signed-off-by: Nikolay Borisov <nborisov@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Diffstat (limited to 'free-space-tree.h')
| -rw-r--r-- | free-space-tree.h | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/free-space-tree.h b/free-space-tree.h index 4845f13e..1af12a81 100644 --- a/free-space-tree.h +++ b/free-space-tree.h @@ -19,8 +19,20 @@ #ifndef __BTRFS_FREE_SPACE_TREE_H__ #define __BTRFS_FREE_SPACE_TREE_H__ +#define BTRFS_FREE_SPACE_BITMAP_SIZE 256 +#define BTRFS_FREE_SPACE_BITMAP_BITS (BTRFS_FREE_SPACE_BITMAP_SIZE * BITS_PER_BYTE) + int btrfs_clear_free_space_tree(struct btrfs_fs_info *fs_info); int load_free_space_tree(struct btrfs_fs_info *fs_info, struct btrfs_block_group_cache *block_group); +int populate_free_space_tree(struct btrfs_trans_handle *trans, + struct btrfs_block_group_cache *block_group); +int remove_block_group_free_space(struct btrfs_trans_handle *trans, + struct btrfs_block_group_cache *block_group); +int add_to_free_space_tree(struct btrfs_trans_handle *trans, u64 start, + u64 size); +int remove_from_free_space_tree(struct btrfs_trans_handle *trans, u64 start, + u64 size); +int btrfs_create_free_space_tree(struct btrfs_fs_info *info); #endif |