Re: [RFC PATCH v2 12/26] qcow2: Handle QCOW2_CLUSTER_UNALLOCATED_SUBCLUSTER

[Alberto Garcia]

On Mon 04 Nov 2019 01:57:42 PM CET, Max Reitz wrote:
> On 26.10.19 23:25, Alberto Garcia wrote:
>> In the previous patch we added a new QCow2ClusterType named
>> QCOW2_CLUSTER_UNALLOCATED_SUBCLUSTER. There is a couple of places
>> where this new value needs to be handled, and that is what this patch
>> does.
>> 
>> Signed-off-by: Alberto Garcia <address@hidden>
>> ---
>>  block/qcow2.c | 13 +++++++++----
>>  1 file changed, 9 insertions(+), 4 deletions(-)
> This patch deals with everything in qcow2.c.  There are more places that
> reference QCOW2_CLUSTER_* constants elsewhere, and I suppose most of
> them are handled by the following patches.
>
> But I wonder what the criterion is on where it needs to be handled and
> where it’s OK not to.  Right now it looks to me like it’s a bit
> arbitrary maybe?  But I suppose I’ll just have to wait until after the
> next patches.

This is the part of the series that I'm the least happy about, because
the existing qcow2_get_cluster_type() can never return this new value, I
only updated the cases where this can actually happen.

I'm still considering a different approach for this.

Berto