From f75580c4afb72c156746b3fc1ec977b1a85d3dee Mon Sep 17 00:00:00 2001 From: "Aneesh Kumar K.V" Date: Mon, 15 Feb 2010 17:27:00 +0000 Subject: [PATCH] net/9p: Add multi channel support. 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 Signed-off-by: Eric Van Hensbergen --- include/linux/virtio_9p.h | 2 +- net/9p/trans_virtio.c | 14 ++++++++------ 2 files changed, 9 insertions(+), 7 deletions(-) diff --git a/include/linux/virtio_9p.h b/include/linux/virtio_9p.h index 095e10d148b4..7a615c3f5e3d 100644 --- a/include/linux/virtio_9p.h +++ b/include/linux/virtio_9p.h @@ -6,6 +6,6 @@ #include /* Maximum number of virtio channels per partition (1 for now) */ -#define MAX_9P_CHAN 1 +#define MAX_9P_CHAN 10 #endif /* _LINUX_VIRTIO_9P_H */ diff --git a/net/9p/trans_virtio.c b/net/9p/trans_virtio.c index cb50f4ae5eef..df924e5657d3 100644 --- a/net/9p/trans_virtio.c +++ b/net/9p/trans_virtio.c @@ -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); -- GitLab