[CRIU] [PATCH v4 07/12] criu: page-xfer: add ability to skip writing lazy pages

Pavel Emelyanov xemul at virtuozzo.com
Thu Jun 9 06:22:37 PDT 2016


On 06/09/2016 04:12 PM, Mike Rapoport wrote:
> On Thu, Jun 9, 2016 at 4:12 PM, Mike Rapoport <mike.rapoport at gmail.com> wrote:
>>>
>>> I have a question here -- if page_xfer_dump_pages sends a pagemap the receiver
>>> would expect the subsequent pages on the socket, but instead, it _may_ receive
>>> next pagemap if the previous one was lazy. How it this handled?
>>
>> Hmmm. It is not... I think that page-server and, most probably,
>> incremental dumps are not compatible with lazy-pages...
> 
> As of now :(

OK... And when in the lazy-pages code-flow would this page_xfer_dump_pages()
get called?

-- Pavel



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