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net/9p: Add multi channel support.

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This is needed for supporting multiple mount points.

We can find out the device names to be used with mount by checking

/sys/devices/virtio-pci/virtio*/device file

if the device file have value 9 then the specific virtio device can
be used for mounting.

ex:
 #cat /sys/devices/virtio-pci/virtio1/device
 9

now we can mount using
# mount -t 9p -o trans=virtio virtio1  /mnt/

Signed-off-by: Aneesh Kumar K.V <[email protected]>
Signed-off-by: Eric Van Hensbergen <[email protected]>
This commit is contained in:
Aneesh Kumar K.V 2010-02-15 17:27:00 +00:00 • committed by Eric Van Hensbergen
commit f75580c4af
2 changed files with 9 additions and 7 deletions
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14
net/9p/trans_virtio.c
View file

@ -296,13 +296,15 @@ p9_virtio_create(struct p9_client *client, const char *devname, char *args)
mutex_lock(&virtio_9p_lock);
while (index < MAX_9P_CHAN) {
if (chan->initialized && !chan->inuse) {
chan->inuse = true;
break;
} else {
index++;
chan = &channels[index];
if (chan->initialized &&
!strcmp(devname, dev_name(&chan->vdev->dev))) {
if (!chan->inuse) {
chan->inuse = true;
break;
}
}
index++;
chan = &channels[index];
}
mutex_unlock(&virtio_9p_lock);