qi-bootmenu-0.1 for GTA02

Stefan Monnier monnier at iro.umontreal.ca
Tue May 18 19:06:58 CEST 2010


>  flash partitions are not scanned? Why?

Because reading even just a single file of a jffs2 partition requires
a lot of time (typically proportional to the size of the jffs2
partition).


        Stefan


PS: Think of a jffs2 partition as a "cyclic tape": to find a file, we
first need to find the beginning of the tape which could be anywhere, so
it requires scanning the whole tape.
There are many ways to optimize this search, but all flash based file
systems have to struggle with this problem.




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