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-rw-r--r--drivers/md/md.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/md/md.c b/drivers/md/md.c
index 8b303477c77..d255997bf63 100644
--- a/drivers/md/md.c
+++ b/drivers/md/md.c
@@ -3463,6 +3463,11 @@ static struct kobject *md_probe(dev_t dev, int *part, void *data)
disk->fops = &md_fops;
disk->private_data = mddev;
disk->queue = mddev->queue;
+ /* Allow extended partitions. This makes the
+ * 'mdp' device redundant, but we can really
+ * remove it now.
+ */
+ disk->flags |= GENHD_FL_EXT_DEVT;
add_disk(disk);
mddev->gendisk = disk;
error = kobject_init_and_add(&mddev->kobj, &md_ktype,