Re: [RFC][PATCH 10/14] In-kernel file copy between union mountedfilesystems

[Shaya Potter]

Bharata B Rao wrote:

> Not really. This is called during copyup of a file residing in a lower
> layer. And that is done only for regular files.

That is broken.

You should be able to change the permissions on a device node on a layer 
that is RO.

so it would copy it up (1. mknod, 2. copy attributes) and then the 
appropriate attribute notification change would be called.
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