[CRIU] [PATCH RFC 0/2] page-read: use in-memory PagemapEntry's

[Pavel Emelyanov]

On 06/07/2016 06:22 PM, Mike Rapoport wrote:
> On Tue, Jun 7, 2016 at 6:16 PM, Pavel Emelyanov <xemul at virtuozzo.com> wrote:
>> On 06/07/2016 03:35 PM, Mike Rapoport wrote:
>>> On Tue, Jun 07, 2016 at 02:55:30PM +0300, Pavel Emelyanov wrote:
>>>> pagemap.img-s use bfd engine to cache reads from images. Your
>>>> patch creates double buffering for them ;)
>>>
>>> Well, yes. But no :)
>>> The bfd caches raw protobuf data, while the in-memory pagemap caches
>>> unpacked PagemapEntrie's. There's indeed some duplication, but you anyway
>>> have to go through 'bread -> unpack' to use pagemap.
>>
>> Agree :)
>>
>>>> Any ideas how to handle it?
>>>
>>> We read the entire pagemap and then close the image? ;-)
>>
>> Oh, do we do this with this set?
> 
> Except the close part :)

Would you send an incremental patch doing this, please?