Linux Virtualization - Dec 2009 - [PATCH] vhost-net: comment use of invalid fd when setting vhost backend

This looks like an error case, but it's just a special case to shutdown
the backend.  Clarify with a comment.

Signed-off-by: Chris Wright <chrisw at redhat.com>
---
 drivers/vhost/net.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)

diff --git a/drivers/vhost/net.c b/drivers/vhost/net.c
index 22d5fef..cc92086 100644
--- a/drivers/vhost/net.c
+++ b/drivers/vhost/net.c
@@ -465,6 +465,7 @@ static struct socket *get_tun_socket(int fd)
 static struct socket *get_socket(int fd)
 {
 	struct socket *sock;
+	/* special case to disable backend */
 	if (fd == -1)
 		return NULL;
 	sock = get_raw_socket(fd);

On Tue, Dec 22, 2009 at 10:18:28AM -0800, Chris Wright
wrote:
> This looks like an error case, but it's just a special case to shutdown
> the backend.  Clarify with a comment.
> 
> Signed-off-by: Chris Wright <chrisw at redhat.com>
Acked-by: Michael S. Tsirkin <mst at redhat.com>
> ---
>  drivers/vhost/net.c |    1 +
>  1 files changed, 1 insertions(+), 0 deletions(-)
> 
> diff --git a/drivers/vhost/net.c b/drivers/vhost/net.c
> index 22d5fef..cc92086 100644
> --- a/drivers/vhost/net.c
> +++ b/drivers/vhost/net.c
> @@ -465,6 +465,7 @@ static struct socket *get_tun_socket(int fd)
>  static struct socket *get_socket(int fd)
>  {
>  	struct socket *sock;
> +	/* special case to disable backend */
>  	if (fd == -1)
>  		return NULL;
>  	sock = get_raw_socket(fd);