[extfs] status report 2

[gnehzuil]

Status:

 * I have improved the algorithm. Now the result of benchmarks are 
looked better, especially in blogbench.

 * Welcome to review the result. ' http://wiki.freebsd.org/SOC2010ZhengLiu'.

Plan for next week:

 * If my mentor agrees, I will publish it.

 * Think about how to update ext2fs to read a ext4 file system in 
read-only mode. Now it can not mount a ext4 hard disk
    because 'mount' command reports incompatible features. So I want to 
implement mount/umount firstly.


lz