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Date: Sun, 4 Dec 2005 15:37:13 -0600
From: Mohamed El Dawy <msdawy@gmail.com>
To: linux-kernel@vger.kernel.org
Subject: Is the address space of a process continous
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Hi,
 I have a question. In the vma_memory_address struct, there are 2
fields "vm_start" and "vm_end". I was wondering, does the process
address space include all addresses between those 2 addresses? or
could there be holes inside this range?

The main reason I am asking is because I tried to call __follow_page()
on some of those addresses and got NULL as a result. I am not sure if
this is a hole, or just a problem with my code!

Thanks a lot in advance