From: Michael S. Tsirkin <mst@redhat.com>
Date: Tue, 21 Sep 2010 12:18:01 +0000 (+0200)
Subject: vhost: copy_to_user -> __copy_to_user
X-Git-Tag: v3.0~2504^2~168^2~7
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=dfe5ac5b18be5b10d01a17e734a9905c0def6088;p=platform%2Fkernel%2Flinux-amlogic.git

vhost: copy_to_user -> __copy_to_user

We do access_ok checks at setup time, so we don't need to
redo them on each access.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
---

diff --git a/drivers/vhost/vhost.c b/drivers/vhost/vhost.c
index c17c881..e6a0931 100644
--- a/drivers/vhost/vhost.c
+++ b/drivers/vhost/vhost.c
@@ -1258,7 +1258,7 @@ static int __vhost_add_used_n(struct vhost_virtqueue *vq,
 
 	start = vq->last_used_idx % vq->num;
 	used = vq->used->ring + start;
-	if (copy_to_user(used, heads, count * sizeof *used)) {
+	if (__copy_to_user(used, heads, count * sizeof *used)) {
 		vq_err(vq, "Failed to write used");
 		return -EFAULT;
 	}