Hugh Dickins wrote:
tmpfs doesn't store its stuff in the page cache twice: that's true,
and I didn't mean to imply otherwise. But tmpfs doesn't contain any
support for rom memory: you'd have to copy from rom to tmpfs to use it.
Hugh
The question is, when you execute a binary on tmpfs, does its code
segment get mapped directly where it's at in the buffer cache, or does
it get copied to another page for the executing process? At least,
assuming this is possible due to the vma and file offsets of the segment
being aligned.
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