[filesystem] struct of m_inode

[Valdis.Kletnieks at vt.edu]

On Sat, 02 Mar 2013 10:28:26 +0800, lx said:

> "if (block >= 7+512+512*512)" because the i_zone[9].
> But the question is why the i_zone[7] can repesent 512 , and i_zone[8] can
> repesent 512*512 ?


Sngle, double, and triple indirect blocks...

http://en.wikipedia.org/wiki/Inode_pointer_structure
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