net/9p: Add multi channel support. (f75580c4) · Commits · 戴 / test

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 <aneesh.kumar@linux.vnet.ibm.com> Signed-off-by:

Eric Van Hensbergen <ericvh@gmail.com>

include/linux/virtio_9p.h

+1 −1

Original line number	Diff line number	Diff line
		@@ -6,6 +6,6 @@
		#include <linux/virtio_config.h>

		/* 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 */

net/9p/trans_virtio.c

+8 −6

Original line number	Diff line number	Diff line
		@@ -296,14 +296,16 @@ 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) {
		if (chan->initialized &&
		!strcmp(devname, dev_name(&chan->vdev->dev))) {
		if (!chan->inuse) {
		chan->inuse = true;
		break;
		} else {
		}
		}
		index++;
		chan = &channels[index];
		}
		}
		mutex_unlock(&virtio_9p_lock);

		if (index >= MAX_9P_CHAN) {

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