[PATCH 12/13] mdadm: drop get_disk_controller_domain()

[Mariusz Tkaczyk <mariusz.tkaczyk@linux.intel.com>]

This function is unused now. Drop it.
Controller for IMSM is a device policy and is separated from user defined
domains.

Signed-off-by: Mariusz Tkaczyk <mariusz.tkaczyk@linux.intel.com>
---
 mdadm.h  | 15 ---------------
 policy.c | 13 -------------
 2 files changed, 28 deletions(-)

diff --git a/mdadm.h b/mdadm.h
index cfa11391415a..3fedca484bdd 100644
--- a/mdadm.h
+++ b/mdadm.h
@@ -1286,21 +1286,6 @@ extern struct superswitch {
 	 */
 	struct mdinfo *(*activate_spare)(struct active_array *a,
 					 struct metadata_update **updates);
-	/*
-	 * Return statically allocated string that represents metadata specific
-	 * controller domain of the disk. The domain is used in disk domain
-	 * matching functions. Disks belong to the same domain if the they have
-	 * the same domain from mdadm.conf and belong the same metadata domain.
-	 * Returning NULL or not providing this handler means that metadata
-	 * does not distinguish the differences between disks that belong to
-	 * different controllers. They are in the domain specified by
-	 * configuration file (mdadm.conf).
-	 * In case when the metadata has the notion of domains based on disk
-	 * it shall return NULL for disks that do not belong to the controller
-	 * the supported domains. Such disks will form another domain and won't
-	 * be mixed with supported ones.
-	 */
-	const char *(*get_disk_controller_domain)(const char *path);
 
 	/* for external backup area */
 	int (*recover_backup)(struct supertype *st, struct mdinfo *info);
diff --git a/policy.c b/policy.c
index 4b85f62d9675..404f9b5dd347 100644
--- a/policy.c
+++ b/policy.c
@@ -365,7 +365,6 @@ struct dev_policy *path_policy(char **paths, char *type)
 {
 	struct pol_rule *rules;
 	struct dev_policy *pol = NULL;
-	int i;
 
 	rules = config_rules;
 
@@ -380,18 +379,6 @@ struct dev_policy *path_policy(char **paths, char *type)
 		rules = rules->next;
 	}
 
-	/* Now add any metadata-specific internal knowledge
-	 * about this path
-	 */
-	for (i=0; paths && paths[0] && superlist[i]; i++)
-		if (superlist[i]->get_disk_controller_domain) {
-			const char *d =
-				superlist[i]->get_disk_controller_domain(
-					paths[0]);
-			if (d)
-				pol_new(&pol, pol_domain, d, superlist[i]->name);
-		}
-
 	pol_sort(&pol);
 	pol_dedup(pol);
 	return pol;
-- 
2.35.3