On Mon, 21 Mar 2016, Kirill A. Shutemov wrote:
> PAGE_CACHE_{SIZE,SHIFT,MASK,ALIGN} macros were introduced *long* time ago
> with promise that one day it will be possible to implement page cache with
> bigger chunks than PAGE_SIZE.
>
> This promise never materialized. And unlikely will.
So we decided that we are never going to put THP pages on a LRU? Will this
actually work if we have really huge memory (100s of TB) where almost
everything is a huge page? Guess we have to use hugetlbfs and we need to
think about this as being exempt from paging.
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