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SubjectRe: Move to unshared VMAs in NOMMU mode?
Date

I'm just trying to digest this a little.

As I understand your description for non-shared mappings the VMAs are
per process.

For shared mappings you share in some sense the page cache.

My gut feel says just keep a vma per process of the regions the
process has and do the appropriate book keeping and all will be fine.

For shm_nattach it looks like you simply are not calling the
open/close methods on fork (because you have a shared pool of vmas).

Eric
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