makedumpfile memory usage grows with system memory size

[Vivek Goyal]

On Fri, Apr 06, 2012 at 10:12:12AM +0900, HATAYAMA Daisuke wrote:

[..]
> So now we can walk on the memmap array also for free pages like other
> kinds of memory. The question I have now is why the current
> implementation was chosen. Is there any difference between two ways?

I don't know but I am guessing may be going through buddy allocator
data structures is faster when there is tons of memory in the system and
number of free pages is less.

Thanks
Vivek