Today i've accidentally overwrote first GB of 400Gb ext4 filesystem with
zeroes :) . So journal, group descriptors, rootdir and etc was destroyed.
Surprisingly i've able to recover some of my data after long fsck
process. I've met only one trivial bug in initialization stage.
See patch attached.

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Thanks for catching this.  I've applied the fix to my source tree.

       	   	    	   		    - Ted
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