On Fri, 2007-02-02 at 09:40 -0600, Adam Litke wrote:
> As of now, the extra_copy window abuts the filesz portion of the
> segment. Therefore, we only really need to store extrasz. The
> pagecache dropping code can then construct a for loop like the
> following:
>
> for (p = vaddr; p < (vaddr + filesz + extrasz); p += HPAGE_SIZE) ...
While in practice that may occur frequently, possibly all the time, it
doesn't _have_ to. Remember that we are simply looking for the first
global symbol, which doesn't have to be immediately after filesz by
definition. We can theoretically end up with something like this:
|---------------|-----<--extra_copy-->----|
filesz memsz
--
Steve Fox
IBM Linux Technology Center
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