mdadm/Detail: show correct state for clustered array

After kernel md module commit 480523feae581, in clustered env,
mddev->in_sync always zero, it will make array.state never set
up MD_SB_CLEAN. it causes "mdadm -D /dev/mdX" show state 'active'
all the time.

bitmap.c: add a new API IsBitmapDirty() to support inquiry bitmap
dirty or clean.

Signed-off-by: Zhao Heming <heming.zhao@suse.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/mdadm.h b/mdadm.h
index 56b1b197..1ee6c92e 100644
--- a/mdadm.h
+++ b/mdadm.h
@@ -1455,6 +1455,7 @@ extern int CreateBitmap(char *filename, int force, char uuid[16],
 			unsigned long long array_size,
 			int major);
 extern int ExamineBitmap(char *filename, int brief, struct supertype *st);
+extern int IsBitmapDirty(char *filename);
 extern int Write_rules(char *rule_name);
 extern int bitmap_update_uuid(int fd, int *uuid, int swap);