btrfs_fs_info.avail_system_alloc_bits

• avail_data_alloc_bits
• avail_metadata_alloc_bits
• avail_system_alloc_bits
• block_group_cache_tree
• chunk_root
• chunk_tree_uuid
• corrupt_blocks
• csum_root
• data_alloc_profile
• dev_root
• dirty_cowonly_roots
• excluded_extents
• extent_cache
• extent_ins
• extent_root
• free_extent_hook
• free_space_cache
• free_space_root
• fs_devices
• fs_root
• fs_root_tree
• fsck_extent_cache
• generation
• last_trans_committed
• log_root_tree
• mapping_tree
• metadata_alloc_profile
• new_chunk_tree_uuid
• nodesize
• pinned_extents
• quota_root
• recow_ebs
• running_transaction
• sectorsize
• space_info
• stripesize
• super_bytenr
• super_copy
• system_alloc_profile
• total_pinned
• transaction_aborted
• tree_root
• uuid_root