On 2015/11/9 16:41, Paolo Bonzini wrote:
>
>
> On 09/11/2015 04:19, arei.gong...@huawei.com wrote:
>> + * 1. requests are not sequential
>> + * 2. merge would exceed maximum number of IOVs
>> + * 3. merge would exceed maximum transfer length of backend
>> device
>> + */
>> + if (sector_num + nb_sectors != req->sector_num ||
>> + niov > IOV_MAX - req->qiov.niov ||
>> + req->qiov.size / BDRV_SECTOR_SIZE + nb_sectors >
>> max_xfer_len) {
>
> Hi Gonglei,
>
> the third condition should also be changed to "new > max - old".
>
Okay, will do. :)
Thanks,
-Gonglei
