Part C: Improving Current Ext3

• Delayed allocation without extents (By Badari Pulavarty, Suparna Bhattacharya)

• Allocating multiple blocks without extents (By Mingming Cao)

• Reduce file unlink and truncate latency (By Andreas Dilger)

• Increased number of subdirectories support (By Andreas Dilger)

• Parallel directory operations (By Alex Tomas)

• Finer timestamp (By Alex Tomas, Andreas Gruenbacher)