Commit e6a76272 authored Aug 14, 2017 by Josef Bacik Committed by Jens Axboe Aug 17, 2017

nbd: allow device creation at a specific index



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@fb.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>

parent a8c1d064

drivers/block/nbd.c

+9 −0

Original line number	Diff line number	Diff line
		@@ -1584,6 +1584,15 @@ again:
		}
		} 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",

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