Messages in this thread | | | Date | Thu, 11 Jun 2020 16:11:16 +0100 | From | Mel Gorman <> | Subject | Re: [PATCH] page_alloc: consider highatomic reserve in wmartermark fast |
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On Thu, Jun 11, 2020 at 10:43:20AM +0900, Jaewon Kim wrote: > > That's fine, I simply wanted to illustrate where I thought the check > > should go to minimise the impact to the majority of allocations. > Hello Mel. > Can I understand that you also agrees on checking highatomic reserved? >
Yes, I think it should be ok.
> Additionally I've wondered why the number of highatomic free pages is not > accurately counted like cma free. Is there any concern on counting it?
At the time, the cost of tracking it with 100% accuracy was not worth it due to a reliance on the pageblock types to protect the regions from other allocation types.
-- Mel Gorman SUSE Labs
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