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79cc304f3e
Some architectures compute ->vm_page_prot depending on ->vm_flags, so we need to update the protections after adjusting the flags. AFAIK this only affects running X under Xen; without this patch you get lots of coloured blobs on the screen, or maybe a complete lockup. Or anything really. But that still depends on lots of out-of-tree stuff, so I don't think there are any consequences for anyone else. But it is wrong in principle. Reported-by: Jan Beulich <JBeulich@novell.com> Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Dave Airlie <airlied@redhat.com> |
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