I gave a talk on the Linux file system back in November last year to the local Sheffield LUG and kept meaning to put it online so that people who missed it or were interested could access it. So after quite a delay here it is I think it is all factually correct but as with everything in life there are no guarantees. It was of course written using open source tools and presented on my Acer Ferrari 4005 laptop. It seemed to go down well and sparked off quite a bit of discussion. The guy who requested the talk wasn’t actually at the meeting though - so may be you can take a look at it now. I have placed the PDF here for all those who would like to take a look.