Re: [RFC] perf: mmap2 not covering VM_CLONE regions

[Peter Zijlstra]

On Tue, Oct 08, 2013 at 09:15:30AM +0200, Stephane Eranian wrote:
> Yes, it is but I am trying to see whether or not we could unify that and
> use a single u64 number to uniquely identify each mapping.

No you cannot; two unrelated executables which have distinct mm_ids can
easily mmap() the same shared file.
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