RE: Problem in the usage of mmap command(in directFB)

["Kaz Kylheku" <kaz@zeugmasystems.com>]

Dear Aptly-Named User, 

The first clue you need to get is that you shouldn't send MIME-encoded,
HTML crap to open source mailing lists. 

Repeatedly sending the same question to half a dozen mailing lists won't
solve your problem. (Everyone heard you the first N times already, and
it's unlikely that anyone new signed up within the last week who can
magically fix the failing mmap cll for you.

You have a 100% reproducible problem: no timing dependencies or race
conditions. Everytime you make the call with more than a certain size,
you nicely get this predictable EINVAL result. 

You have the source code to everything; you can add debug printk calls
anywhere you want and rebuild the kernel. If there are multiple places
that can produce an -EINVAL return value, you can precisely identify
which one is doing it.

Golly, gee, lucky you! This is like the software equivalent of taking a
shot against a wide-open net: just kick the ball!

What is missing?