btrfs: remove the bdev argument to btrfs_rmap_block

The only user in the zoned remap code is gone now, so remove the argument.
Reviewed-by: Josef Bacik <josef@toxicpanda.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>

fs/btrfs/block-group.c

@@ -1965,7 +1965,6 @@ static void set_avail_alloc_bits(struct btrfs_fs_info *fs_info, u64 flags)
  *
  * @fs_info:       the filesystem
  * @chunk_start:   logical address of block group
- * @bdev:	   physical device to resolve, can be NULL to indicate any device
  * @physical:	   physical address to map to logical addresses
  * @logical:	   return array of logical addresses which map to @physical
  * @naddrs:	   length of @logical
@@ -1976,8 +1975,7 @@ static void set_avail_alloc_bits(struct btrfs_fs_info *fs_info, u64 flags)
  * block copies.
  */
 int btrfs_rmap_block(struct btrfs_fs_info *fs_info, u64 chunk_start,
-		     struct block_device *bdev, u64 physical, u64 **logical,
-		     int *naddrs, int *stripe_len)
+		     u64 physical, u64 **logical, int *naddrs, int *stripe_len)
 {
 	struct extent_map *em;
 	struct map_lookup *map;
@@ -2017,9 +2015,6 @@ int btrfs_rmap_block(struct btrfs_fs_info *fs_info, u64 chunk_start,
 			      data_stripe_length))
 			continue;
 
-		if (bdev && map->stripes[i].dev->bdev != bdev)
-			continue;
-
 		stripe_nr = physical - map->stripes[i].physical;
 		stripe_nr = div64_u64_rem(stripe_nr, map->stripe_len, &offset);
 
@@ -2076,7 +2071,7 @@ static int exclude_super_stripes(struct btrfs_block_group *cache)
 
 	for (i = 0; i < BTRFS_SUPER_MIRROR_MAX; i++) {
 		bytenr = btrfs_sb_offset(i);
-		ret = btrfs_rmap_block(fs_info, cache->start, NULL,
+		ret = btrfs_rmap_block(fs_info, cache->start,
 				       bytenr, &logical, &nr, &stripe_len);
 		if (ret)
 			return ret;

fs/btrfs/block-group.h

@@ -328,8 +328,7 @@ u64 btrfs_get_alloc_profile(struct btrfs_fs_info *fs_info, u64 orig_flags);
 void btrfs_put_block_group_cache(struct btrfs_fs_info *info);
 int btrfs_free_block_groups(struct btrfs_fs_info *info);
 int btrfs_rmap_block(struct btrfs_fs_info *fs_info, u64 chunk_start,
-		       struct block_device *bdev, u64 physical, u64 **logical,
-		       int *naddrs, int *stripe_len);
+		     u64 physical, u64 **logical, int *naddrs, int *stripe_len);
 
 static inline u64 btrfs_data_alloc_profile(struct btrfs_fs_info *fs_info)
 {

fs/btrfs/tests/extent-map-tests.c

@@ -509,7 +509,7 @@ static int test_rmap_block(struct btrfs_fs_info *fs_info,
 		goto out_free;
 	}
 
-	ret = btrfs_rmap_block(fs_info, em->start, NULL, btrfs_sb_offset(1),
+	ret = btrfs_rmap_block(fs_info, em->start, btrfs_sb_offset(1),
 			       &logical, &out_ndaddrs, &out_stripe_len);
 	if (ret || (out_ndaddrs == 0 && test->expected_mapped_addr)) {
 		test_err("didn't rmap anything but expected %d",