md: only include md-cluster.h if necessary

md-cluster is only supportted by raid1 and raid10, there is no need to
include md-cluster.h for other personalities.

Also move APIs that is only used in md-cluster.c from md.h to
md-cluster.h.

Link: https://lore.kernel.org/linux-raid/20250215092225.2427977-3-yukuai1@huaweicloud.com
Signed-off-by: Yu Kuai <yukuai3@huawei.com>
Reviewed-by: Su Yue <glass.su@suse.com>

5 files changed, 11 insertions, 7 deletions

diff --git a/drivers/md/md-bitmap.c b/drivers/md/md-bitmap.c
index 23c09d22fcdb..71aa7dc80e26 100644
--- a/drivers/md/md-bitmap.c
+++ b/drivers/md/md-bitmap.c
@@ -29,8 +29,10 @@
 #include <linux/buffer_head.h>
 #include <linux/seq_file.h>
 #include <trace/events/block.h>
+
 #include "md.h"
 #include "md-bitmap.h"
+#include "md-cluster.h"
 
 #define BITMAP_MAJOR_LO 3
 /* version 4 insists the bitmap is in little-endian order
diff --git a/drivers/md/md-cluster.h b/drivers/md/md-cluster.h
index 470bf18ffde5..6c7aad00f5da 100644
--- a/drivers/md/md-cluster.h
+++ b/drivers/md/md-cluster.h
@@ -35,4 +35,11 @@ struct md_cluster_operations {
 	void (*update_size)(struct mddev *mddev, sector_t old_dev_sectors);
 };
 
+extern int register_md_cluster_operations(const struct md_cluster_operations *ops,
+		struct module *module);
+extern int unregister_md_cluster_operations(void);
+extern int md_setup_cluster(struct mddev *mddev, int nodes);
+extern void md_cluster_stop(struct mddev *mddev);
+extern void md_reload_sb(struct mddev *mddev, int raid_disk);
+
 #endif /* _MD_CLUSTER_H */
diff --git a/drivers/md/md.h b/drivers/md/md.h
index def808064ad8..c9bc70e6d5b4 100644
--- a/drivers/md/md.h
+++ b/drivers/md/md.h
@@ -19,7 +19,6 @@
 #include <linux/wait.h>
 #include <linux/workqueue.h>
 #include <trace/events/block.h>
-#include "md-cluster.h"
 
 #define MaxSector (~(sector_t)0)
 
@@ -845,11 +844,6 @@ static inline void safe_put_page(struct page *p)
 
 extern int register_md_personality(struct md_personality *p);
 extern int unregister_md_personality(struct md_personality *p);
-extern int register_md_cluster_operations(const struct md_cluster_operations *ops,
-		struct module *module);
-extern int unregister_md_cluster_operations(void);
-extern int md_setup_cluster(struct mddev *mddev, int nodes);
-extern void md_cluster_stop(struct mddev *mddev);
 extern struct md_thread *md_register_thread(
 	void (*run)(struct md_thread *thread),
 	struct mddev *mddev,
@@ -906,7 +900,6 @@ extern void md_idle_sync_thread(struct mddev *mddev);
 extern void md_frozen_sync_thread(struct mddev *mddev);
 extern void md_unfrozen_sync_thread(struct mddev *mddev);
 
-extern void md_reload_sb(struct mddev *mddev, int raid_disk);
 extern void md_update_sb(struct mddev *mddev, int force);
 extern void mddev_create_serial_pool(struct mddev *mddev, struct md_rdev *rdev);
 extern void mddev_destroy_serial_pool(struct mddev *mddev,
diff --git a/drivers/md/raid1.c b/drivers/md/raid1.c
index a87eb9a3b016..789e8b73df9b 100644
--- a/drivers/md/raid1.c
+++ b/drivers/md/raid1.c
@@ -36,6 +36,7 @@
 #include "md.h"
 #include "raid1.h"
 #include "md-bitmap.h"
+#include "md-cluster.h"
 
 #define UNSUPPORTED_MDDEV_FLAGS		\
 	((1L << MD_HAS_JOURNAL) |	\
diff --git a/drivers/md/raid10.c b/drivers/md/raid10.c
index efe93b979167..3df39b2399b2 100644
--- a/drivers/md/raid10.c
+++ b/drivers/md/raid10.c
@@ -24,6 +24,7 @@
 #include "raid10.h"
 #include "raid0.h"
 #include "md-bitmap.h"
+#include "md-cluster.h"
 
 /*
  * RAID10 provides a combination of RAID0 and RAID1 functionality.