Hi Vasilis, (2013/07/16 1:37), Vasilis Liaskovitis wrote:
Hi Yasuaki, in your memory hotplug slides at LinuxCon Japan 2013, you mention "migrate vmalloc area" as one of the TODO items (slide 30 / 31): http://events.linuxfoundation.org/sites/events/files/lcjp13_ishimatsu.pdf
can you further explain this problem? Isn't this case handled already from the current page migration code? Do you have a specific testcase that can trigger this issue?
This item aims to increase removable memory. When we use memory hot remove, we need to use ZONE_MOVABLE. But the use of the zone is limited. The zone can treat only anonymous page and page cache. So I want to enhance the zone to treat vmalloc area. But currently there is no patch. Thanks, Yasuaki Ishimatsu
thanks, - Vasilis
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