[ Sorry, AFK there for a while ]

On Tue, Sep 20, 2016 at 2:03 PM, Al Viro <v...@zeniv.linux.org.uk> wrote:
> What proper mappings?  If you manage to mmap something at (void*)-PAGE_SIZE,
> you are very deep in trouble regardless.  We use IS_ERR() on userland
> pointers and any architecture where that would be possible would be confused
> as hell.

Ack, you've convinced me. Will apply the patch.


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