Messages in this thread | | | Date | Fri, 18 Nov 2005 08:13:54 +0000 (GMT) | From | Hugh Dickins <> | Subject | Re: [PATCH 07/11] unpaged: COW on VM_UNPAGED |
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On Fri, 18 Nov 2005, David S. Miller wrote: > From: Hugh Dickins <hugh@veritas.com> > 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. :)
Are you so sure of that, that we should even skip adding a warning?
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