virtio-blk: don't let virtio core to validate used length

We never tries to use used length, so the patch prevents the virtio
core from validating used length.

Signed-off-by: Jason Wang <jasowang@redhat.com>
Link: https://lore.kernel.org/r/20211027022107.14357-4-jasowang@redhat.com
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>

diff --git a/drivers/block/virtio_blk.c b/drivers/block/virtio_blk.c
index ec6ed24d1061a74efbfec6df38e3328ca2fc2379..e1f4f63ed246fcf19ad35662843914b8f21914cc 100644 (file)
--- a/drivers/block/virtio_blk.c
+++ b/drivers/block/virtio_blk.c
@@ -1041,6 +1041,7 @@ static struct virtio_driver virtio_blk = {
        .feature_table_size             = ARRAY_SIZE(features),
        .feature_table_legacy           = features_legacy,
        .feature_table_size_legacy      = ARRAY_SIZE(features_legacy),
+       .suppress_used_validation       = true,
        .driver.name                    = KBUILD_MODNAME,
        .driver.owner                   = THIS_MODULE,
        .id_table                       = id_table,