mdadm: Make add_internal_bitmap() return 0 on success

add_internal_bitmap() returned 1 on success and 0 on error which is
inconsistent. This changes it to return 0 on success and use more
reasonable error codes on error.

Signed-off-by: Jes Sorensen <Jes.Sorensen@redhat.com>

1 files changed, 2 insertions, 0 deletions

diff --git a/mdadm.h b/mdadm.h
index d209488b..b8705854 100755
--- a/mdadm.h
+++ b/mdadm.h
@@ -896,6 +896,8 @@ extern struct superswitch {
 	 * created, in which case data_size may be updated, or it might
 	 * already exist.  Metadata handler can know if init_super
 	 * has been called, but not write_init_super.
+	 *  0:     Success
+	 * -Exxxx: On error
 	 */
 	int (*add_internal_bitmap)(struct supertype *st, int *chunkp,
 				   int delay, int write_behind,