Introduce devid2kname - slightly different to devid2devnm.

The purpose od devid2devnm is to return a kernel name of an
md device, whether that device is a whole device or a partition,
we want the whole device.  md4, never md4p2.

In one place I was using devid2devnm where I really wanted the
partition if there was one ... and wasn't really interested in it
being an md device.
So introduce a new 'devid2kname' for that case.

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

1 files changed, 1 insertions, 0 deletions

diff --git a/mdadm.h b/mdadm.h
index 5463bfba..c5d9c301 100644
--- a/mdadm.h
+++ b/mdadm.h
@@ -1349,6 +1349,7 @@ extern void print_r10_layout(int layout);
 extern char *find_free_devnm(int use_partitions);
 
 extern void put_md_name(char *name);
+extern char *devid2kname(int devid);
 extern char *devid2devnm(int devid);
 extern int devnm2devid(char *devnm);
 extern char *get_md_name(char *devnm);