Index: uspace/lib/ext4/libext4_extent.c
===================================================================
--- uspace/lib/ext4/libext4_extent.c	(revision 0d4db0f4252afb0a982d0f61fe3cfa55af93dc71)
+++ uspace/lib/ext4/libext4_extent.c	(revision 001307cf739bf07517cf923a8ed5eaf6da6121e7)
@@ -275,9 +275,4 @@
 	uint16_t depth = ext4_extent_header_get_depth(eh);
 
-//	EXT4FS_DBG("depth = \%u", depth);
-//	EXT4FS_DBG("header = \%u", (uint32_t)eh);
-//	EXT4FS_DBG("entries_count = \%u", ext4_extent_header_get_entries_count(eh));
-//	EXT4FS_DBG("max entries_count = \%u", ext4_extent_header_get_max_entries_count(eh));
-
 	ext4_extent_path_t *tmp_path;
 
@@ -326,6 +321,4 @@
 	ext4_extent_binsearch(tmp_path[pos].header, &tmp_path[pos].extent, iblock);
 
-	EXT4FS_DBG("extent = \%u", (uint32_t)tmp_path[pos].extent);
-
 	*ret_path = tmp_path;
 
@@ -362,4 +355,8 @@
 	ext4_extent_set_block_count(path_ptr->extent, block_count);
 
+	path_ptr->block->dirty = true;
+
+	bool check_tree = false;
+
 	if (block_count == 0) {
 		uint16_t entries = ext4_extent_header_get_entries_count(path_ptr->header);
@@ -367,12 +364,37 @@
 		ext4_extent_header_set_entries_count(path_ptr->header, entries);
 
-		// TODO if empty leaf, release it
-
-	}
-
-	path_ptr->block->dirty = true;
+		// If empty leaf, will be released and the whole tree must be checked
+		check_tree = true;
+	}
+
+	while (check_tree) {
+
+		if (path_ptr > path) {
+			// TODO
+
+			// zahodit fblock
+			rc = ext4_balloc_free_block(inode_ref, path_ptr->block->pba);
+			if (rc != EOK) {
+				EXT4FS_DBG("ERROR");
+				// TODO
+			}
+		} else {
+			check_tree = false;
+		}
+
+		path_ptr--;
+
+		uint16_t entries = ext4_extent_header_get_entries_count(path_ptr->header);
+		entries--;
+		ext4_extent_header_set_entries_count(path_ptr->header, entries);
+
+		if (entries > 0) {
+			check_tree = false;
+		}
+	}
 
 	rc = ext4_balloc_free_block(inode_ref, fblock);
 	if (rc != EOK) {
+		EXT4FS_DBG("ERROR");
 		// TODO handle error
 	}