Re: [Qemu-devel] [PATCH v2 3/7] docs: add lazy refcounts bit to qcow2 specification

[Stefan Hajnoczi]

On Thu, Jul 26, 2012 at 1:57 PM, Kevin Wolf <address@hidden> wrote:
> Am 25.07.2012 14:21, schrieb Stefan Hajnoczi:
>> The lazy refcounts bit indicates that this image can take advantage of
>> the dirty bit and that refcount updates can be postponed.
>>
>> Signed-off-by: Stefan Hajnoczi <address@hidden>
>> ---
>>  docs/specs/qcow2.txt |    7 ++++++-
>>  1 file changed, 6 insertions(+), 1 deletion(-)
>>
>> diff --git a/docs/specs/qcow2.txt b/docs/specs/qcow2.txt
>> index 339cdc1..f2f4faa 100644
>> --- a/docs/specs/qcow2.txt
>> +++ b/docs/specs/qcow2.txt
>> @@ -86,7 +86,12 @@ in the description of a field.
>>                      Bitmask of compatible features. An implementation can
>>                      safely ignore any unknown bits that are set.
>>
>> -                    Bits 0-63:  Reserved (set to 0)
>> +                    Bit 0:      Lazy refcounts bit.  If this bit is set then
>> +                                lazy refcount updates can be used.  This 
>> means
>> +                                postponing marking the image file dirty and
>
> Not sure what was intended here, but the dirty flag isn't set anywhere
> yet, so you can't postpone it either. Maybe s/postponing//?

Yes, s/postponing//.

Stefan