On Fri 16 Jun 2017 05:31:42 PM CEST, Kevin Wolf wrote:
>> +/* Make sure that adding both COW regions to the QEMUIOVector
>> + * does not exceed IOV_MAX */
>> +if (hd_qiov->niov > IOV_MAX - 2) {
>> +continue;
>> +}
>> +
>> +m->data_qiov = hd_qiov;
Am 07.06.2017 um 16:08 hat Alberto Garcia geschrieben:
> If the guest tries to write data that results on the allocation of a
> new cluster, instead of writing the guest data first and then the data
> from the COW regions, write everything together using one single I/O
> operation.
>
> This can im
If the guest tries to write data that results on the allocation of a
new cluster, instead of writing the guest data first and then the data
from the COW regions, write everything together using one single I/O
operation.
This can improve the write performance by 25% or more, depending on
several fa
