Messages in this thread | | | Date | Wed, 11 Jul 2018 18:52:45 +0800 | From | Wei Wang <> | Subject | Re: [PATCH v35 1/5] mm: support to get hints of free page blocks |
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On 07/11/2018 05:21 PM, Michal Hocko wrote: > On Tue 10-07-18 18:44:34, Linus Torvalds wrote: > [...] >> That was what I tried to encourage with actually removing the pages >> form the page list. That would be an _incremental_ interface. You can >> remove MAX_ORDER-1 pages one by one (or a hundred at a time), and mark >> them free for ballooning that way. And if you still feel you have tons >> of free memory, just continue removing more pages from the free list. > We already have an interface for that. alloc_pages(GFP_NOWAIT, MAX_ORDER -1). > So why do we need any array based interface?
Yes, I'm trying to get free pages directly via alloc_pages, so there will be no new mm APIs. I plan to let free page allocation stop when the remaining system free memory becomes close to min_free_kbytes (prevent swapping).
Best, Wei
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