TODO 992 B

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  1. * cleanup, add more error checking, get rid of BUG_ONs
  2. * Fix ENOSPC handling
  3. * Add block mapping tree (simple dm layer)
  4. * Make allocator smarter
  5. * add a block group to struct inode
  6. * Make sure nobh stuff is working properly for cows
  7. * Do actual block accounting
  8. * Check compat and incompat flags on the inode
  9. * Add virtual filesystems, mountable snapshots
  10. * Get rid of struct ctree_path, limiting tree levels held at one time
  11. * EEXIST for dirs instead of hash overflow
  12. * Release
  13. * Do real tree locking
  14. * Add extent mirroring (backup copies of blocks)
  15. * Add fancy interface to get access to incremental backups
  16. * Add fancy striped extents to make big reads faster
  17. * Use relocation to try and fix write errors
  18. * Make allocator much smarter
  19. * xattrs (directory streams for regular files)
  20. * fsck
  21. * Scrub & defrag
  22. ---
  23. metata FS ideas:
  24. mount metadata FS on /sys/fs/btrfs/dev/
  25. subvolumes in /sys/fs/btrfs/dev/fs/
  26. snapshots in /sys/fs/btrfs/dev/fs/snapshots
  27. mount -o bind
  28. ioctl to create a snapshot