diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c
index 556b93c05ee3..c0928fcb3f32 100644
--- a/fs/btrfs/extent-tree.c
+++ b/fs/btrfs/extent-tree.c
@@ -4568,7 +4568,7 @@ void check_system_chunk(struct btrfs_trans_handle *trans,
 		 * the paths we visit in the chunk tree (they were already COWed
 		 * or created in the current transaction for example).
 		 */
-		ret = btrfs_alloc_chunk(trans, fs_info, flags);
+		ret = btrfs_alloc_chunk(trans, flags);
 	}
 
 	if (!ret) {
@@ -4670,7 +4670,7 @@ static int do_chunk_alloc(struct btrfs_trans_handle *trans, u64 flags,
 	 */
 	check_system_chunk(trans, fs_info, flags);
 
-	ret = btrfs_alloc_chunk(trans, fs_info, flags);
+	ret = btrfs_alloc_chunk(trans, flags);
 	trans->allocating_chunk = false;
 
 	spin_lock(&space_info->lock);
diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c
index ff7c8cdacd85..4a7423294270 100644
--- a/fs/btrfs/volumes.c
+++ b/fs/btrfs/volumes.c
@@ -5038,13 +5038,12 @@ int btrfs_finish_chunk_alloc(struct btrfs_trans_handle *trans,
  * require modifying the chunk tree. This division is important for the
  * bootstrap process of adding storage to a seed btrfs.
  */
-int btrfs_alloc_chunk(struct btrfs_trans_handle *trans,
-		      struct btrfs_fs_info *fs_info, u64 type)
+int btrfs_alloc_chunk(struct btrfs_trans_handle *trans, u64 type)
 {
 	u64 chunk_offset;
 
-	lockdep_assert_held(&fs_info->chunk_mutex);
-	chunk_offset = find_next_chunk(fs_info);
+	lockdep_assert_held(&trans->fs_info->chunk_mutex);
+	chunk_offset = find_next_chunk(trans->fs_info);
 	return __btrfs_alloc_chunk(trans, chunk_offset, type);
 }
 
diff --git a/fs/btrfs/volumes.h b/fs/btrfs/volumes.h
index 5139ec8daf4c..df2d8bdf8c9a 100644
--- a/fs/btrfs/volumes.h
+++ b/fs/btrfs/volumes.h
@@ -396,8 +396,7 @@ int btrfs_rmap_block(struct btrfs_fs_info *fs_info, u64 chunk_start,
 		     u64 physical, u64 **logical, int *naddrs, int *stripe_len);
 int btrfs_read_sys_array(struct btrfs_fs_info *fs_info);
 int btrfs_read_chunk_tree(struct btrfs_fs_info *fs_info);
-int btrfs_alloc_chunk(struct btrfs_trans_handle *trans,
-		      struct btrfs_fs_info *fs_info, u64 type);
+int btrfs_alloc_chunk(struct btrfs_trans_handle *trans, u64 type);
 void btrfs_mapping_init(struct btrfs_mapping_tree *tree);
 void btrfs_mapping_tree_free(struct btrfs_mapping_tree *tree);
 blk_status_t btrfs_map_bio(struct btrfs_fs_info *fs_info, struct bio *bio,