Re: [PATCH 1/2] mm: thp: relax __GFP_THISNODE for MADV_HUGEPAGE mappings

[Sorry for being slow in responding but I was mostly offline last few days]

On Tue 09-10-18 10:48:25, Mel Gorman wrote: [...]

This goes back to my point that the MADV_HUGEPAGE hint should not make promises about locality and that introducing MADV_LOCAL for specialised libraries may be more appropriate with the initial semantic being how it treats MADV_HUGEPAGE regions.

I agree with your other points and not going to repeat them. I am not sure madvise s the best API for the purpose though. We are talking about memory policy here and there is an existing api for that so I would _prefer_ to reuse it for this purpose.

Sure we will likely need somethin in the compaction as well but we should start simple and go forward in smaller steps.