md/md-bitmap: pass in mddev directly for md_bitmap_resize()

And move the condition "if (mddev->bitmap)" into md_bitmap_resize() as
well, on the one hand make code cleaner, on the other hand try not to
access bitmap directly.

Since we are here, also change the parameter 'init' from int to bool.

Signed-off-by: Yu Kuai <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Song Liu <[email protected]>

Author: YuKuai-huawei

drivers/md/dm-raid.c

@@ -4068,7 +4068,7 @@ static int raid_preresume(struct dm_target *ti)
 	       mddev->bitmap_info.chunksize != to_bytes(rs->requested_bitmap_chunk_sectors)))) {
 		int chunksize = to_bytes(rs->requested_bitmap_chunk_sectors) ?: mddev->bitmap_info.chunksize;
 
-		r = md_bitmap_resize(mddev->bitmap, mddev->dev_sectors, chunksize, 0);
+		r = md_bitmap_resize(mddev, mddev->dev_sectors, chunksize, false);
 		if (r)
 			DMERR("Failed to resize bitmap");
 	}

drivers/md/md-bitmap.c

@@ -32,6 +32,9 @@
 #include "md.h"
 #include "md-bitmap.h"
 
+static int __bitmap_resize(struct bitmap *bitmap, sector_t blocks,
+			   int chunksize, bool init);
+
 static inline char *bmname(struct bitmap *bitmap)
 {
 	return bitmap->mddev ? mdname(bitmap->mddev) : "mdX";
@@ -1975,7 +1978,8 @@ static struct bitmap *__bitmap_create(struct mddev *mddev, int slot)
 		goto error;
 
 	bitmap->daemon_lastrun = jiffies;
-	err = md_bitmap_resize(bitmap, blocks, mddev->bitmap_info.chunksize, 1);
+	err = __bitmap_resize(bitmap, blocks, mddev->bitmap_info.chunksize,
+			      true);
 	if (err)
 		goto error;
 
@@ -2163,8 +2167,8 @@ static int bitmap_get_stats(struct bitmap *bitmap, struct md_bitmap_stats *stats
 	return 0;
 }
 
-int md_bitmap_resize(struct bitmap *bitmap, sector_t blocks,
-		  int chunksize, int init)
+static int __bitmap_resize(struct bitmap *bitmap, sector_t blocks,
+			   int chunksize, bool init)
 {
 	/* If chunk_size is 0, choose an appropriate chunk size.
 	 * Then possibly allocate new storage space.
@@ -2369,6 +2373,17 @@ int md_bitmap_resize(struct bitmap *bitmap, sector_t blocks,
 err:
 	return ret;
 }
+
+int md_bitmap_resize(struct mddev *mddev, sector_t blocks, int chunksize,
+		     bool init)
+{
+	struct bitmap *bitmap = mddev->bitmap;
+
+	if (!bitmap)
+		return 0;
+
+	return __bitmap_resize(bitmap, blocks, chunksize, init);
+}
 EXPORT_SYMBOL_GPL(md_bitmap_resize);
 
 static ssize_t

drivers/md/md-bitmap.h

@@ -280,8 +280,8 @@ void mddev_set_bitmap_ops(struct mddev *mddev);
 
 /* these are exported */
 
-int md_bitmap_resize(struct bitmap *bitmap, sector_t blocks,
-		     int chunksize, int init);
+int md_bitmap_resize(struct mddev *mddev, sector_t blocks, int chunksize,
+		     bool init);
 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);

drivers/md/md-cluster.c

@@ -628,8 +628,8 @@ static int process_recvd_msg(struct mddev *mddev, struct cluster_msg *msg)
 		break;
 	case BITMAP_RESIZE:
 		if (le64_to_cpu(msg->high) != mddev->pers->size(mddev, 0, 0))
-			ret = md_bitmap_resize(mddev->bitmap,
-					    le64_to_cpu(msg->high), 0, 0);
+			ret = md_bitmap_resize(mddev, le64_to_cpu(msg->high), 0,
+					       false);
 		break;
 	default:
 		ret = -1;

drivers/md/raid1.c

@@ -3297,14 +3297,16 @@ static int raid1_resize(struct mddev *mddev, sector_t sectors)
 	 * worth it.
 	 */
 	sector_t newsize = raid1_size(mddev, sectors, 0);
+	int ret;
+
 	if (mddev->external_size &&
 	    mddev->array_sectors > newsize)
 		return -EINVAL;
-	if (mddev->bitmap) {
-		int ret = md_bitmap_resize(mddev->bitmap, newsize, 0, 0);
-		if (ret)
-			return ret;
-	}
+
+	ret = md_bitmap_resize(mddev, newsize, 0, false);
+	if (ret)
+		return ret;
+
 	md_set_array_sectors(mddev, newsize);
 	if (sectors > mddev->dev_sectors &&
 	    mddev->recovery_cp > mddev->dev_sectors) {

drivers/md/raid10.c

@@ -4196,6 +4196,7 @@ static int raid10_resize(struct mddev *mddev, sector_t sectors)
 	 */
 	struct r10conf *conf = mddev->private;
 	sector_t oldsize, size;
+	int ret;
 
 	if (mddev->reshape_position != MaxSector)
 		return -EBUSY;
@@ -4208,11 +4209,11 @@ static int raid10_resize(struct mddev *mddev, sector_t sectors)
 	if (mddev->external_size &&
 	    mddev->array_sectors > size)
 		return -EINVAL;
-	if (mddev->bitmap) {
-		int ret = md_bitmap_resize(mddev->bitmap, size, 0, 0);
-		if (ret)
-			return ret;
-	}
+
+	ret = md_bitmap_resize(mddev, size, 0, false);
+	if (ret)
+		return ret;
+
 	md_set_array_sectors(mddev, size);
 	if (sectors > mddev->dev_sectors &&
 	    mddev->recovery_cp > oldsize) {
@@ -4478,7 +4479,7 @@ static int raid10_start_reshape(struct mddev *mddev)
 		newsize = raid10_size(mddev, 0, conf->geo.raid_disks);
 
 		if (!mddev_is_clustered(mddev)) {
-			ret = md_bitmap_resize(mddev->bitmap, newsize, 0, 0);
+			ret = md_bitmap_resize(mddev, newsize, 0, false);
 			if (ret)
 				goto abort;
 			else
@@ -4500,13 +4501,13 @@ static int raid10_start_reshape(struct mddev *mddev)
 			    MD_FEATURE_RESHAPE_ACTIVE)) || (oldsize == newsize))
 			goto out;
 
-		ret = md_bitmap_resize(mddev->bitmap, newsize, 0, 0);
+		ret = md_bitmap_resize(mddev, newsize, 0, false);
 		if (ret)
 			goto abort;
 
 		ret = md_cluster_ops->resize_bitmaps(mddev, newsize, oldsize);
 		if (ret) {
-			md_bitmap_resize(mddev->bitmap, oldsize, 0, 0);
+			md_bitmap_resize(mddev, oldsize, 0, false);
 			goto abort;
 		}
 	}

drivers/md/raid5.c

@@ -8313,6 +8313,7 @@ static int raid5_resize(struct mddev *mddev, sector_t sectors)
 	 */
 	sector_t newsize;
 	struct r5conf *conf = mddev->private;
+	int ret;
 
 	if (raid5_has_log(conf) || raid5_has_ppl(conf))
 		return -EINVAL;
@@ -8321,11 +8322,11 @@ static int raid5_resize(struct mddev *mddev, sector_t sectors)
 	if (mddev->external_size &&
 	    mddev->array_sectors > newsize)
 		return -EINVAL;
-	if (mddev->bitmap) {
-		int ret = md_bitmap_resize(mddev->bitmap, sectors, 0, 0);
-		if (ret)
-			return ret;
-	}
+
+	ret = md_bitmap_resize(mddev, sectors, 0, false);
+	if (ret)
+		return ret;
+
 	md_set_array_sectors(mddev, newsize);
 	if (sectors > mddev->dev_sectors &&
 	    mddev->recovery_cp > mddev->dev_sectors) {