rbd: call rbd_init_disk() sooner

Call rbd_init_disk() from rbd_add() as soon as we have the major
device number for the mapping.

Signed-off-by: Alex Elder <elder@inktank.com>
Reviewed-by: Josh Durgin <josh.durgin@inktank.com>

diff --git a/drivers/block/rbd.c b/drivers/block/rbd.c
index 7a600ca..2798804 100644 (file)
--- a/drivers/block/rbd.c
+++ b/drivers/block/rbd.c
@@ -2623,10 +2623,16 @@ static ssize_t rbd_add(struct bus_type *bus,
                goto err_out_id;
        rbd_dev->major = rc;
 
-       rc = rbd_bus_add_dev(rbd_dev);
+       /* Set up the blkdev mapping. */
+
+       rc = rbd_init_disk(rbd_dev);
        if (rc)
                goto err_out_blkdev;
 
+       rc = rbd_bus_add_dev(rbd_dev);
+       if (rc)
+               goto err_out_disk;
+
        /*
         * At this point cleanup in the event of an error is the job
         * of the sysfs code (initiated by rbd_bus_del_dev()).
@@ -2638,12 +2644,6 @@ static ssize_t rbd_add(struct bus_type *bus,
        if (rc)
                goto err_out_bus;
 
-       /* Set up the blkdev mapping. */
-
-       rc = rbd_init_disk(rbd_dev);
-       if (rc)
-               goto err_out_bus;
-
        /* Everything's ready.  Announce the disk to the world. */
 
        set_capacity(rbd_dev->disk, rbd_dev->mapping.size / SECTOR_SIZE);
@@ -2664,6 +2664,8 @@ err_out_bus:
        kfree(options);
        return rc;
 
+err_out_disk:
+       rbd_free_disk(rbd_dev);
 err_out_blkdev:
        unregister_blkdev(rbd_dev->major, rbd_dev->name);
 err_out_id: