Subject: [PATCH 6/6] fixup! vhost: batching fetches

From: Eugenio Pérez <[email-masked]>
Date: Sun, 29 Mar 2020 13:33:59 +0200

Old code did not take into account the _SET_BASE ioctl.

Signed-off-by: Eugenio Pérez <[email-masked]>
---
 drivers/vhost/vhost.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/vhost/vhost.c b/drivers/vhost/vhost.c
index 5f84f29b6c47..1646b1ce312a 100644
--- a/drivers/vhost/vhost.c
+++ b/drivers/vhost/vhost.c
@@ -1652,6 +1652,7 @@ long vhost_vring_ioctl(struct vhost_dev *d, unsigned int ioctl, void __user *arg
 		vq->last_avail_idx = s.num;
 		/* Forget the cached index value. */
 		vq->avail_idx = vq->last_avail_idx;
+		vq->ndescs = vq->first_desc = 0;
 		break;
 	case VHOST_GET_VRING_BASE:
 		s.index = idx;
-- 
2.18.1