[RFC,-next,v2,35/41] md/md-bitmap: merge get_bitmap_from_slot() into bitmap_operations

Commit Message

Yu Kuai Aug. 14, 2024, 7:11 a.m. UTC

From: Yu Kuai <[e-mail]>

So that the implementation won't be exposed, and it'll be possible
to invent a new bitmap by replacing bitmap_operations.

Signed-off-by: Yu Kuai <[e-mail]>
---
 drivers/md/md-bitmap.c  | 6 +++---
 drivers/md/md-bitmap.h  | 2 +-
 drivers/md/md-cluster.c | 4 ++--
 3 files changed, 6 insertions(+), 6 deletions(-)

Patch

diff --git a/drivers/md/md-bitmap.c b/drivers/md/md-bitmap.c
index 4dc48055b18f..a89119438aa2 100644
--- a/drivers/md/md-bitmap.c
+++ b/drivers/md/md-bitmap.c
@@ -2064,7 +2064,7 @@  static int bitmap_load(struct mddev *mddev)
 }
 
 /* caller need to free returned bitmap with md_bitmap_free() */
-struct bitmap *get_bitmap_from_slot(struct mddev *mddev, int slot)
+static struct bitmap *bitmap_get_from_slot(struct mddev *mddev, int slot)
 {
 	int rv = 0;
 	struct bitmap *bitmap;
@@ -2083,7 +2083,6 @@  struct bitmap *get_bitmap_from_slot(struct mddev *mddev, int slot)
 
 	return bitmap;
 }
-EXPORT_SYMBOL(get_bitmap_from_slot);
 
 /* Loads the bitmap associated with slot and copies the resync information
  * to our bitmap
@@ -2096,7 +2095,7 @@  int md_bitmap_copy_from_slot(struct mddev *mddev, int slot,
 	struct bitmap_counts *counts;
 	struct bitmap *bitmap;
 
-	bitmap = get_bitmap_from_slot(mddev, slot);
+	bitmap = bitmap_get_from_slot(mddev, slot);
 	if (IS_ERR(bitmap)) {
 		pr_err("%s can't get bitmap from slot %d\n", __func__, slot);
 		return -1;
@@ -2771,6 +2770,7 @@  static struct bitmap_operations bitmap_ops = {
 	.get_stats		= bitmap_get_stats,
 
 	.sync_with_cluster	= bitmap_sync_with_cluster,
+	.get_from_slot		= bitmap_get_from_slot,
 };
 
 void mddev_set_bitmap_ops(struct mddev *mddev)
diff --git a/drivers/md/md-bitmap.h b/drivers/md/md-bitmap.h
index 64ab063734c9..cbd25b9aa145 100644
--- a/drivers/md/md-bitmap.h
+++ b/drivers/md/md-bitmap.h
@@ -275,6 +275,7 @@  struct bitmap_operations {
 	void (*sync_with_cluster)(struct mddev *mddev,
 				  sector_t old_lo, sector_t old_hi,
 				  sector_t new_lo, sector_t new_hi);
+	struct bitmap *(*get_from_slot)(struct mddev *mddev, int slot);
 };
 
 /* the bitmap API */
@@ -282,7 +283,6 @@  void mddev_set_bitmap_ops(struct mddev *mddev);
 
 /* these are exported */
 
-struct bitmap *get_bitmap_from_slot(struct mddev *mddev, int slot);
 int md_bitmap_copy_from_slot(struct mddev *mddev, int slot,
 			     sector_t *lo, sector_t *hi, bool clear_bits);
 void md_bitmap_set_pages(struct bitmap *bitmap, unsigned long pages);
diff --git a/drivers/md/md-cluster.c b/drivers/md/md-cluster.c
index 2250bd6dddb7..bfc7003547b9 100644
--- a/drivers/md/md-cluster.c
+++ b/drivers/md/md-cluster.c
@@ -1168,7 +1168,7 @@  static int resize_bitmaps(struct mddev *mddev, sector_t newsize, sector_t oldsiz
 		if (i == md_cluster_ops->slot_number(mddev))
 			continue;
 
-		bitmap = get_bitmap_from_slot(mddev, i);
+		bitmap = mddev->bitmap_ops->get_from_slot(mddev, i);
 		if (IS_ERR(bitmap)) {
 			pr_err("can't get bitmap from slot %d\n", i);
 			bitmap = NULL;
@@ -1234,7 +1234,7 @@  static int cluster_check_sync_size(struct mddev *mddev)
 		if (i == current_slot)
 			continue;
 
-		bitmap = get_bitmap_from_slot(mddev, i);
+		bitmap = mddev->bitmap_ops->get_from_slot(mddev, i);
 		if (IS_ERR(bitmap)) {
 			pr_err("can't get bitmap from slot %d\n", i);
 			return -1;