On Thu, Jun 27, 2019 at 04:53:02PM +0200, Michal Hocko wrote:

On Thu 27-06-19 07:36:50, Dave Hansen wrote:
[...]

quoted

For MADV_COLD, if we defined it like this, I think we could use it for
both purposes (demotion and LRU movement):

	Pages in the specified regions will be treated as less-recently-
	accessed compared to pages in the system with similar access
	frequencies.  In contrast to MADV_DONTNEED, the contents of the

you meant s@MADV_DONTNEED@MADV_FREE@ I suppose

Right, MADV_FREE is more proper because it's aging related.

quoted

	region are preserved.

It would be nice not to talk about reclaim at all since we're not
promising reclaim per se.

Your suggestion doesn't expose any implementation detail and could meet your
needs later. I'm okay. I will change it if others are not against of it.

Thanks, Dave.