md/md-bitmap: remove parameter slot from bitmap_create()

All callers pass in '-1' for 'slot', hence it can be removed.

Link: https://lore.kernel.org/linux-raid/20250524061320.370630-6-yukuai1@huaweicloud.com
Signed-off-by: Yu Kuai <yukuai3@huawei.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Xiao Ni <xni@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Hannes Reinecke <hare@suse.de>

Author: YuKuai-huawei

drivers/md/md-bitmap.c

@@ -2214,9 +2214,9 @@ static struct bitmap *__bitmap_create(struct mddev *mddev, int slot)
 	return ERR_PTR(err);
 }
 
-static int bitmap_create(struct mddev *mddev, int slot)
+static int bitmap_create(struct mddev *mddev)
 {
-	struct bitmap *bitmap = __bitmap_create(mddev, slot);
+	struct bitmap *bitmap = __bitmap_create(mddev, -1);
 
 	if (IS_ERR(bitmap))
 		return PTR_ERR(bitmap);
@@ -2679,7 +2679,7 @@ location_store(struct mddev *mddev, const char *buf, size_t len)
 			}
 
 			mddev->bitmap_info.offset = offset;
-			rv = bitmap_create(mddev, -1);
+			rv = bitmap_create(mddev);
 			if (rv)
 				goto out;
 

drivers/md/md-bitmap.h

@@ -63,7 +63,7 @@ struct md_bitmap_stats {
 
 struct bitmap_operations {
 	bool (*enabled)(struct mddev *mddev);
-	int (*create)(struct mddev *mddev, int slot);
+	int (*create)(struct mddev *mddev);
 	int (*resize)(struct mddev *mddev, sector_t blocks, int chunksize,
 		      bool init);
 

drivers/md/md.c

@@ -6225,7 +6225,7 @@ int md_run(struct mddev *mddev)
 	}
 	if (err == 0 && pers->sync_request &&
 	    (mddev->bitmap_info.file || mddev->bitmap_info.offset)) {
-		err = mddev->bitmap_ops->create(mddev, -1);
+		err = mddev->bitmap_ops->create(mddev);
 		if (err)
 			pr_warn("%s: failed to create bitmap (%d)\n",
 				mdname(mddev), err);
@@ -7285,7 +7285,7 @@ static int set_bitmap_file(struct mddev *mddev, int fd)
 	err = 0;
 	if (mddev->pers) {
 		if (fd >= 0) {
-			err = mddev->bitmap_ops->create(mddev, -1);
+			err = mddev->bitmap_ops->create(mddev);
 			if (!err)
 				err = mddev->bitmap_ops->load(mddev);
 
@@ -7601,7 +7601,7 @@ static int update_array_info(struct mddev *mddev, mdu_array_info_t *info)
 				mddev->bitmap_info.default_offset;
 			mddev->bitmap_info.space =
 				mddev->bitmap_info.default_space;
-			rv = mddev->bitmap_ops->create(mddev, -1);
+			rv = mddev->bitmap_ops->create(mddev);
 			if (!rv)
 				rv = mddev->bitmap_ops->load(mddev);