From: Josef Bacik <jbacik@xxxxxx>
If users really want to use a particular index for their nbd device and it
doesn't already exist there's no reason we can't just create it for them. Do
this instead of erroring out.
Signed-off-by: Josef Bacik <jbacik@xxxxxx>
---
drivers/block/nbd.c | 9 +++++++++
1 file changed, 9 insertions(+)
diff --git a/drivers/block/nbd.c b/drivers/block/nbd.c
index 5bdf923..d816ae7 100644
--- a/drivers/block/nbd.c
+++ b/drivers/block/nbd.c
@@ -1584,6 +1584,15 @@ static int nbd_genl_connect(struct sk_buff *skb, struct genl_info *info)
}
} else {
nbd = idr_find(&nbd_index_idr, index);
+ if (!nbd) {
+ ret = nbd_dev_add(index);
+ if (ret < 0) {
+ mutex_unlock(&nbd_index_mutex);
+ printk(KERN_ERR "nbd: failed to add new device\n");
+ return ret;
+ }
+ nbd = idr_find(&nbd_index_idr, index);
+ }
}
if (!nbd) {
printk(KERN_ERR "nbd: couldn't find device at index %d\n",
--
2.9.5
