const char* btrfs_compress_type2str(enum btrfs_compression_type type);
bool btrfs_compress_is_valid_type(const char *str, size_t len);
-unsigned int btrfs_compress_set_level(int type, unsigned level);
-
int btrfs_compress_heuristic(struct inode *inode, u64 start, u64 end);
#endif