Re: [RFC][PATCH v2] procfs: Always expose /proc/<pid>/map_files/ and make it readable

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Are mount namespaces handled in this output?

Could you clarify this moment, i'm not sure i get it.

I changed how I asked this question in my review of the documentation,
but it looks like these symlinks aren't "regular" symlinks (that are
up to the follower to have access to the file system path shown), but
rather they bypass VFS. As a result, I'm wondering how things like
mount namespaces might change this behavior: what is shown, the path
from the perspective of the target, or from the viewer (which may be
in separate mount namespaces).

These work just like the /proc/$pid/fd/$n links do. When you readlink
on it the d_path() is called which walks up the dentry/vfsmnt tree
until it reaches either current root or the global one. For "another"
mount namespace case it produces the path relative to this namespace's
root.

Thanks,
Pavel