[Ocfs2-devel] What are the purposes of GLOBAL_INODE_ALLOC_SYSTEM_INODE and BAD_BLOCK_SYSTEM_INODE system file

[Gang He]

Hello Guys,

If you use debugfs.ocfs2 to list system files for a ocfs2 file system, you can find these two system files.
sles12sp1-node1:/ # debugfs.ocfs2 /dev/sdb1
debugfs.ocfs2 1.8.2
debugfs: ls //
 6               16   1    2  .
 6               16   2    2  ..
 7               24   10   1  bad_blocks             << ==  BAD_BLOCK_SYSTEM_INODE
 8               32   18   1  global_inode_alloc     << ==  GLOBAL_INODE_ALLOC_SYSTEM_INODE
  ....

But, What are the purposes of GLOBAL_INODE_ALLOC_SYSTEM_INODE and BAD_BLOCK_SYSTEM_INODE system file?
For BAD_BLOCK_SYSTEM_INODE system file, it looks to be used to store bad blocks for a file system partition, but from the code, there is not any code for this system file.
For GLOBAL_INODE_ALLOC_SYSTEM_INODE system file, there is also not any code for it, what is the purpose of this file ?


Thanks
Gang