From: Hugh Dickins <[email protected]>
Date: Fri, 18 Nov 2005 08:02:02 +0000 (GMT)
> That code is necessary to reproduce the existing behaviour, which has
> always done COW on PageReserved mappings without complaint - if the
> vm_page_prot didn't already let you slip through without a WP fault.
And there is evidence today that this is really needed, at least
by vbetool.
Ok, we need COW on VM_UNPAGED. :)
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