Commit c1a7c226 authored Feb 15, 2010 by Aneesh Kumar K.V Committed by Eric Van Hensbergen Mar 05, 2010

net/9p: Handle mount errors correctly.



With this patch we have

# mount -t 9p -o trans=virtio virtio2 /mnt/
# mount -t 9p -o trans=virtio virtio2 /mnt/
mount: virtio2 already mounted or /mnt/ busy
mount: according to mtab, virtio2 is already mounted on /mnt
# mount -t 9p -o trans=virtio virtio3 /mnt/ -o debug=0xfff
mount: special device virtio3 does not exist

Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>

parent 37c1209d

net/9p/trans_virtio.c

+3 −1

Original line number	Diff line number	Diff line
		@@ -279,6 +279,7 @@ static int
		p9_virtio_create(struct p9_client client, const char devname, char *args)
		{
		struct virtio_chan *chan;
		int ret = -ENOENT;
		int found = 0;

		mutex_lock(&virtio_9p_lock);
		@@ -289,13 +290,14 @@ p9_virtio_create(struct p9_client client, const char devname, char *args)
		found = 1;
		break;
		}
		ret = -EBUSY;
		}
		}
		mutex_unlock(&virtio_9p_lock);

		if (!found) {
		printk(KERN_ERR "9p: no channels available\n");
		return -ENODEV;
		return ret;
		}

		client->trans = (void *)chan;