[CRIU] [PATCH] mm: don't dump the zero page

[Pavel Emelyanov]

On 01/30/2014 01:42 PM, Cyrill Gorcunov wrote:
> On Thu, Jan 30, 2014 at 01:37:51PM +0400, Pavel Emelyanov wrote:
>> On 01/30/2014 01:23 PM, Cyrill Gorcunov wrote:
>>> On Wed, Jan 29, 2014 at 11:36:19PM +0400, Andrey Vagin wrote:
>>>> If someone reads untouched page, the kernel maps the zero page
>>>> to this address. This page will not have the SOFT_DIRTY bit and it must
>>>> not be dumped.
>>>>
>>>> Signed-off-by: Andrey Vagin <avagin at openvz.org>
>>>
>>> Pavel, merge it asap please.
>>> .
>>
>> What's the rush?
> 
> I'm about to optimize vdso lookup (not sure though yet) but defenitely
> it'll be using zero-pfn for comparison. So this is a bugfix and would
> be cool to have it merged.
> .
> 

Plz, apply it locally if you need it badly. I'll finish with irmap cache
first and merge it a bit later.