Index: uspace/lib/ext4/src/balloc.c
===================================================================
--- uspace/lib/ext4/src/balloc.c	(revision 47e00b8364871fedb5a2508cfc367b91b0cb8e63)
+++ uspace/lib/ext4/src/balloc.c	(revision a4eb3ba2b6a831a2a639dfe74c4deb2ca435b91c)
@@ -214,5 +214,6 @@
 
 		if ((first + count) >= limit) {
-			/* This extent spans over 2 or more block groups,
+			/*
+			 * This extent spans over 2 or more block groups,
 			 * we'll break it into smaller parts.
 			 */
@@ -254,5 +255,6 @@
 	if (!ext4_superblock_has_feature_incompatible(sb,
 	    EXT4_FEATURE_INCOMPAT_FLEX_BG)) {
-		/* If we are not using FLEX_BG, the first data block
+		/*
+		 * If we are not using FLEX_BG, the first data block
 		 * is always after the inode table.
 		 */
Index: uspace/lib/ext4/src/filesystem.c
===================================================================
--- uspace/lib/ext4/src/filesystem.c	(revision 47e00b8364871fedb5a2508cfc367b91b0cb8e63)
+++ uspace/lib/ext4/src/filesystem.c	(revision a4eb3ba2b6a831a2a639dfe74c4deb2ca435b91c)
@@ -750,5 +750,6 @@
 		} else if (!ext4_superblock_has_feature_read_only(sb,
 		    EXT4_FEATURE_RO_COMPAT_SPARSE_SUPER)) {
-			/* Very old fs were all block groups have
+			/*
+			 * Very old fs were all block groups have
 			 * superblock and block descriptors backups.
 			 */
@@ -767,5 +768,6 @@
 		uint32_t block_size = ext4_superblock_get_block_size(sb);
 
-		/* Now we know that this block group has backups,
+		/*
+		 * Now we know that this block group has backups,
 		 * we have to compute how many blocks are reserved
 		 * for them
@@ -773,5 +775,6 @@
 
 		if (idx == 0 && block_size == 1024) {
-			/* Special case for first group were the boot block
+			/*
+			 * Special case for first group were the boot block
 			 * resides
 			 */
Index: uspace/lib/ext4/src/ops.c
===================================================================
--- uspace/lib/ext4/src/ops.c	(revision 47e00b8364871fedb5a2508cfc367b91b0cb8e63)
+++ uspace/lib/ext4/src/ops.c	(revision a4eb3ba2b6a831a2a639dfe74c4deb2ca435b91c)
@@ -146,5 +146,5 @@
 }
 
-/* Finalization of the driver.
+/** Finalization of the driver.
  *
  * This is only needed to destroy the hash table.