Re: [RFC][PATCH] mm: madvise: MADV_POPULATE for quick pre-faulting

[Dave Hansen]

On 07/01/2013 07:37 PM, Zheng Liu wrote:
> FWIW, it would be great if we can let MAP_POPULATE flag support shared
> mappings because in our product system there has a lot of applications
> that uses mmap(2) and then pre-faults this mapping.  Currently these
> applications need to pre-fault the mapping manually.

Are you sure it doesn't?  From a cursory look at the code, it looked to
me like it would populate anonymous and file-backed, but I didn't
double-check experimentally.
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