On Wed, 19 Dec 2012 16:57:03 -0800
ebiederm@xmission.com (Eric W. Biederman) wrote:

Andrew Morton [off-list ref] writes:

quoted

Is there any way in which we can move some of this logic into the
kernel?  In this case, add some kernel code which uses PageBuddy() on
behalf of makedumpfile, rather than replicating the PageBuddy() logic
in userspace?

All that exists when makedumpfile runs is a core file.  So it would have
to be something like a share library that builds with the kernel and
then makedumpfile loads.

Can we omit free pages from that core file?

And/or add a section to that core file which flags free pages?

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