diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index 0133b688ce04..16f097f58acc 100644
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -226,9 +226,7 @@ static void print_data_reloc_error(const struct btrfs_inode *inode, u64 file_off
 	u32 item_size;
 	int ret;
 
-	mutex_lock(&fs_info->reloc_mutex);
 	logical = btrfs_get_reloc_bg_bytenr(fs_info);
-	mutex_unlock(&fs_info->reloc_mutex);
 
 	if (logical == U64_MAX) {
 		btrfs_warn_rl(fs_info, "has data reloc tree but no running relocation");
diff --git a/fs/btrfs/relocation.c b/fs/btrfs/relocation.c
index 80aac9fcd627..e7771c4c4f38 100644
--- a/fs/btrfs/relocation.c
+++ b/fs/btrfs/relocation.c
@@ -5863,14 +5863,15 @@ int btrfs_reloc_post_snapshot(struct btrfs_trans_handle *trans,
  *
  * Return U64_MAX if no running relocation.
  */
-u64 btrfs_get_reloc_bg_bytenr(const struct btrfs_fs_info *fs_info)
+u64 btrfs_get_reloc_bg_bytenr(struct btrfs_fs_info *fs_info)
 {
 	u64 logical = U64_MAX;
 
-	lockdep_assert_held(&fs_info->reloc_mutex);
-
+	mutex_lock(&fs_info->reloc_mutex);
 	if (fs_info->reloc_ctl && fs_info->reloc_ctl->block_group)
 		logical = fs_info->reloc_ctl->block_group->start;
+	mutex_unlock(&fs_info->reloc_mutex);
+
 	return logical;
 }
 
diff --git a/fs/btrfs/relocation.h b/fs/btrfs/relocation.h
index d647823b5d13..bb7a86e7dbe3 100644
--- a/fs/btrfs/relocation.h
+++ b/fs/btrfs/relocation.h
@@ -41,7 +41,7 @@ int btrfs_reloc_post_snapshot(struct btrfs_trans_handle *trans,
 int btrfs_should_cancel_balance(const struct btrfs_fs_info *fs_info);
 struct btrfs_root *find_reloc_root(struct btrfs_fs_info *fs_info, u64 bytenr);
 bool btrfs_should_ignore_reloc_root(const struct btrfs_root *root);
-u64 btrfs_get_reloc_bg_bytenr(const struct btrfs_fs_info *fs_info);
+u64 btrfs_get_reloc_bg_bytenr(struct btrfs_fs_info *fs_info);
 int btrfs_translate_remap(struct btrfs_fs_info *fs_info, u64 *logical, u64 *length);
 int btrfs_remove_extent_from_remap_tree(struct btrfs_trans_handle *trans,
 					struct btrfs_path *path,