[PATCH] dm: remove useless md->nr_zones variable

[Benjamin Marzinski]

md->nr_zones is no longer used for anything. Remove it.

Signed-off-by: Benjamin Marzinski <bmarz...@redhat.com>
---
 drivers/md/dm-core.h | 1 -
 drivers/md/dm-zone.c | 3 ---
 2 files changed, 4 deletions(-)

diff --git a/drivers/md/dm-core.h b/drivers/md/dm-core.h
index a3c9f74fe2dc..1cda8618d74d 100644
--- a/drivers/md/dm-core.h
+++ b/drivers/md/dm-core.h
@@ -139,7 +139,6 @@ struct mapped_device {
        struct srcu_struct io_barrier;
 
 #ifdef CONFIG_BLK_DEV_ZONED
-       unsigned int nr_zones;
        void *zone_revalidate_map;
        struct task_struct *revalidate_map_task;
 #endif
diff --git a/drivers/md/dm-zone.c b/drivers/md/dm-zone.c
index 78e17dd4d01b..cf4553e863f0 100644
--- a/drivers/md/dm-zone.c
+++ b/drivers/md/dm-zone.c
@@ -193,8 +193,6 @@ int dm_revalidate_zones(struct dm_table *t, struct 
request_queue *q)
                return ret;
        }
 
-       md->nr_zones = disk->nr_zones;
-
        return 0;
 }
 
@@ -442,7 +440,6 @@ void dm_finalize_zone_settings(struct dm_table *t, struct 
queue_limits *lim)
                        set_bit(DMF_EMULATE_ZONE_APPEND, &md->flags);
        } else {
                clear_bit(DMF_EMULATE_ZONE_APPEND, &md->flags);
-               md->nr_zones = 0;
                md->disk->nr_zones = 0;
        }
 }
-- 
2.50.1