2018-04-05 22:29 GMT+08:00 Jens Axboe :
> On 4/5/18 4:09 AM, Weiping Zhang wrote:
>> Hi,
>>
>> For virtio block device, actually there is no a hard limit for max request
>> size, and virtio_blk driver set -1 to blk_queue_max_hw_sectors(q, -1U);.
>> But it doesn't work, because there is a default up
On 4/5/18 4:09 AM, Weiping Zhang wrote:
> Hi,
>
> For virtio block device, actually there is no a hard limit for max request
> size, and virtio_blk driver set -1 to blk_queue_max_hw_sectors(q, -1U);.
> But it doesn't work, because there is a default upper limitation
> BLK_DEF_MAX_SECTORS (1280 sec
Weiping,
> For virtio block device, actually there is no a hard limit for max
> request size, and virtio_blk driver set -1 to
> blk_queue_max_hw_sectors(q, -1U);. But it doesn't work, because there
> is a default upper limitation BLK_DEF_MAX_SECTORS (1280 sectors).
That's intentional (although
Hi,
For virtio block device, actually there is no a hard limit for max request
size, and virtio_blk driver set -1 to blk_queue_max_hw_sectors(q, -1U);.
But it doesn't work, because there is a default upper limitation
BLK_DEF_MAX_SECTORS (1280 sectors). So this series want to add a new helper
blk_q
