[libvirt] [PATCH] [3/4] Implement managed save operations for qemu driver

Laine Stump laine at laine.org
Fri Apr 2 20:48:36 UTC 2010

On 04/02/2010 04:26 PM, Eric Blake wrote:
> On 04/02/2010 01:56 PM, Daniel Veillard wrote:
>> +static int
>> +qemuDomainManagedSave(virDomainPtr dom,
>> +                      unsigned int flags ATTRIBUTE_UNUSED)
> No - for future compability, we NEED to check that flags==0 or fail now.
>   Otherwise, a future version, where flags has meaning, will mistakenly
> think that our older version can honor those flags.

That makes sense, but there's a lot of precedence to the contrary 
already in the code:

find . -name \*.c | xargs grep "flags ATTRIBUTE_UNUSED" | wc
        155     832   14106

(some of these are probably false positives, but still...)

Sounds like you're volunteering for a global cleanup ;-)

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