MTD CVS update: 'mtd/fs/jffs2 scan.c'

[nico at infradead.org]

Update of /home/cvs/mtd/fs/jffs2
In directory infradead.org:/tmp/cvs-serv32240/fs/jffs2

Modified Files:
	scan.c 
Log Message:
If flash does not contain any JFFS2 node, don't touch it as before.
If flash is entirely empty, then go ahead now.
This also speeds up mount on partially erased flash since completely empty
flash blocks aren't erased unnecessarily.