eCos jffs2 garbage collection thread + fix

["Per Hedblom" <per dot hedblom at abem dot se>]

Hi,
I have spent some time implementing the garbage collect thread for jffs2 in
eCos. I publish this as a version that is more complete than the current
gcthread.c without promising anything more. It seams to work under the synt
target tested with low, the same, and higher priority than a file system
test thread. One major question is if the locking of the icache is correct.

I also publish my temporary fix for a previously reported problem with the
garbage collection. (jffs2_write_fix). This fix is needed if garbage
collection hits the erase block that the "write" is currently appending data
to. Jffs2 will otherwise report BUG in gc.c on line 1161.
It's a workaround for the problem until someone can find the correct
solution.

Per Hedblom

Attachment: jffs2_write_fix
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Attachment: jffs2_gc_patch
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