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>
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1 changed files with 3 additions and 1 deletions
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@ -279,6 +279,7 @@ static int
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p9_virtio_create(struct p9_client *client, const char *devname, char *args)
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{
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struct virtio_chan *chan;
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int ret = -ENOENT;
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int found = 0;
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mutex_lock(&virtio_9p_lock);
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@ -289,13 +290,14 @@ p9_virtio_create(struct p9_client *client, const char *devname, char *args)
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found = 1;
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break;
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}
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ret = -EBUSY;
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}
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}
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mutex_unlock(&virtio_9p_lock);
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if (!found) {
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printk(KERN_ERR "9p: no channels available\n");
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return -ENODEV;
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return ret;
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}
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client->trans = (void *)chan;
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