linux-kernel - [PATCH RFC v7 08/14] fixup! vhost: use batched get_vq

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Date:   Wed, 10 Jun 2020 07:36:16 -0400
From:   "Michael S. Tsirkin" <mst@...hat.com>
To:     linux-kernel@...r.kernel.org
Cc:     kvm@...r.kernel.org, virtualization@...ts.linux-foundation.org,
        netdev@...r.kernel.org, Jason Wang <jasowang@...hat.com>,
        eperezma@...hat.com
Subject: [PATCH RFC v7 08/14] fixup! vhost: use batched get_vq_desc version

---
 drivers/vhost/vhost.c | 4 ----
 1 file changed, 4 deletions(-)

diff --git a/drivers/vhost/vhost.c b/drivers/vhost/vhost.c
index 7a587b13095c..03e6bca02288 100644
--- a/drivers/vhost/vhost.c
+++ b/drivers/vhost/vhost.c
@@ -2205,10 +2205,6 @@ static int fetch_buf(struct vhost_virtqueue *vq)
 	last_avail_idx = vq->last_avail_idx;
 
 	if (unlikely(vq->avail_idx == vq->last_avail_idx)) {
-		/* If we already have work to do, don't bother re-checking. */
-		if (likely(vq->ndescs))
-			return 1;
-
 		if (unlikely(vhost_get_avail_idx(vq, &avail_idx))) {
 			vq_err(vq, "Failed to access avail idx at %p\n",
 				&vq->avail->idx);
-- 
MST