md: allow extended partitions on md devices.



The new extended partition support provides a much nicer was
to have partitions on md devices that the 'mdp' alternate major.
We cannot really get rid of 'mdp' at this time, but we can
enable extended partitions as that will probably make life
easier for sysadmins.

Signed-off-by: NeilBrown <neilb@suse.de>

parent 3c0ee63a

drivers/md/md.c

+5 −0

Original line number	Diff line number	Diff line
		@@ -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,