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authorAl Viro <viro@zeniv.linux.org.uk>2014-12-15 21:39:31 -0500
committerAl Viro <viro@zeniv.linux.org.uk>2015-04-11 15:53:35 -0400
commit01e97e6517053d7c0b9af5248e944a9209909cf5 (patch)
tree30f57eededa62a390543b3a596d81006deb22384 /drivers/vhost
parenta2dd3793a1c3ac709f1d7b48ad7751563f4c654f (diff)
new helper: msg_data_left()
convert open-coded instances Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'drivers/vhost')
-rw-r--r--drivers/vhost/net.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/vhost/net.c b/drivers/vhost/net.c
index 18f05bff8826..7d137a43cc86 100644
--- a/drivers/vhost/net.c
+++ b/drivers/vhost/net.c
@@ -357,13 +357,13 @@ static void handle_tx(struct vhost_net *net)
iov_iter_init(&msg.msg_iter, WRITE, vq->iov, out, len);
iov_iter_advance(&msg.msg_iter, hdr_size);
/* Sanity check */
- if (!iov_iter_count(&msg.msg_iter)) {
+ if (!msg_data_left(&msg)) {
vq_err(vq, "Unexpected header len for TX: "
"%zd expected %zd\n",
len, hdr_size);
break;
}
- len = iov_iter_count(&msg.msg_iter);
+ len = msg_data_left(&msg);
zcopy_used = zcopy && len >= VHOST_GOODCOPY_LEN
&& (nvq->upend_idx + 1) % UIO_MAXIOV !=