Jamie Lokier <ja...@shareable.org> wrote:

> I think current kernels share automatically when there are multiple
> instances of a text segment (any read-only file mapping), no matter
> how they are stored.  But I'm not sure about this.

That is the case.  If possible, R/O private file mappings will be shared, and
may even be shared from a backing device, such as flash, to do XIP.

Documentation/nommu-mmap.txt gives some more information.

David
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