[md-6.14,12/13] md: export some helpers

Commit Message

Yu Kuai Dec. 25, 2024, 11:15 a.m. UTC

From: Yu Kuai <[e-mail]>

These helpers are used inside md-bitmap.c, prepare to build it as kernel
module first.

Signed-off-by: Yu Kuai <[e-mail]>
---
 drivers/md/md.c | 15 ++++++---------
 drivers/md/md.h | 10 +++++++++-
 2 files changed, 15 insertions(+), 10 deletions(-)

Patch

diff --git a/drivers/md/md.c b/drivers/md/md.c
index 4170ef31a273..f1f70803439d 100644
--- a/drivers/md/md.c
+++ b/drivers/md/md.c
@@ -252,6 +252,7 @@  void mddev_create_serial_pool(struct mddev *mddev, struct md_rdev *rdev)
 		}
 	}
 }
+EXPORT_SYMBOL_GPL(mddev_create_serial_pool);
 
 /*
  * Free resource from rdev(s), and destroy serial_info_pool under conditions:
@@ -291,6 +292,7 @@  void mddev_destroy_serial_pool(struct mddev *mddev, struct md_rdev *rdev)
 		}
 	}
 }
+EXPORT_SYMBOL_GPL(mddev_destroy_serial_pool);
 
 static struct ctl_table_header *raid_table_header;
 
@@ -994,15 +996,7 @@  void md_super_write(struct mddev *mddev, struct md_rdev *rdev,
 	atomic_inc(&mddev->pending_writes);
 	submit_bio(bio);
 }
-
-int md_super_wait(struct mddev *mddev)
-{
-	/* wait for all superblock writes that were scheduled to complete */
-	wait_event(mddev->sb_wait, atomic_read(&mddev->pending_writes)==0);
-	if (test_and_clear_bit(MD_SB_NEED_REWRITE, &mddev->sb_flags))
-		return -EAGAIN;
-	return 0;
-}
+EXPORT_SYMBOL_GPL(md_super_write);
 
 int sync_page_io(struct md_rdev *rdev, sector_t sector, int size,
 		 struct page *page, blk_opf_t opf, bool metadata_op)
@@ -3820,6 +3814,7 @@  int strict_strtoul_scaled(const char *cp, unsigned long *res, int scale)
 	*res = result * int_pow(10, scale - decimals);
 	return 0;
 }
+EXPORT_SYMBOL_GPL(strict_strtoul_scaled);
 
 static ssize_t
 safe_delay_show(struct mddev *mddev, char *page)
@@ -8606,6 +8601,7 @@  int md_setup_cluster(struct mddev *mddev, int nodes)
 		mddev->safemode_delay = 0;
 	return ret;
 }
+EXPORT_SYMBOL_GPL(md_setup_cluster);
 
 void md_cluster_stop(struct mddev *mddev)
 {
@@ -8614,6 +8610,7 @@  void md_cluster_stop(struct mddev *mddev)
 	md_cluster_ops->leave(mddev);
 	module_put(md_cluster_mod);
 }
+EXPORT_SYMBOL_GPL(md_cluster_stop);
 
 static int is_mddev_idle(struct mddev *mddev, int init)
 {
diff --git a/drivers/md/md.h b/drivers/md/md.h
index 87edf81c25b0..7e8276d2dadc 100644
--- a/drivers/md/md.h
+++ b/drivers/md/md.h
@@ -874,7 +874,6 @@  void md_free_cloned_bio(struct bio *bio);
 extern bool __must_check md_flush_request(struct mddev *mddev, struct bio *bio);
 extern void md_super_write(struct mddev *mddev, struct md_rdev *rdev,
 			   sector_t sector, int size, struct page *page);
-extern int md_super_wait(struct mddev *mddev);
 extern int sync_page_io(struct md_rdev *rdev, sector_t sector, int size,
 		struct page *page, blk_opf_t opf, bool metadata_op);
 extern void md_do_sync(struct md_thread *thread);
@@ -999,6 +998,15 @@  static inline bool mddev_is_dm(struct mddev *mddev)
 	return !mddev->gendisk;
 }
 
+static inline int md_super_wait(struct mddev *mddev)
+{
+	/* wait for all superblock writes that were scheduled to complete */
+	wait_event(mddev->sb_wait, atomic_read(&mddev->pending_writes) == 0);
+	if (test_and_clear_bit(MD_SB_NEED_REWRITE, &mddev->sb_flags))
+		return -EAGAIN;
+	return 0;
+}
+
 static inline void mddev_trace_remap(struct mddev *mddev, struct bio *bio,
 		sector_t sector)
 {