[Yaffs] YAFFS2 and kswapd dead lock problem --> fix

[Charles Manning]

Hi Reed

The patch would not stick (I think I screwed up the text handling), so I added 
it manually. I also wanted to change comments to /*...*/ to keep the style 
guide Gestapo happy too.

The fix is:
http://www.aleph1.co.uk/cgi-bin/viewcvs.cgi/yaffs2/yaffs_fs.c?r1=1.35&r2=1.36

I would really appreciate you reviewing the changes.

Thanx again for hunting this.

-- CHarles