diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c
index 0d8971b819e9..e4b0722717b3 100644
--- a/fs/ext4/inode.c
+++ b/fs/ext4/inode.c
@@ -3577,10 +3577,20 @@ retry:
 		iomap->type = delalloc ? IOMAP_DELALLOC : IOMAP_HOLE;
 		iomap->addr = IOMAP_NULL_ADDR;
 	} else {
-		if (map.m_flags & EXT4_MAP_MAPPED) {
-			iomap->type = IOMAP_MAPPED;
-		} else if (map.m_flags & EXT4_MAP_UNWRITTEN) {
+		/*
+		 * Flags passed into ext4_map_blocks() for direct I/O writes
+		 * can result in m_flags having both EXT4_MAP_MAPPED and
+		 * EXT4_MAP_UNWRITTEN bits set. In order for any allocated
+		 * unwritten extents to be converted into written extents
+		 * correctly within the ->end_io() handler, we need to ensure
+		 * that the iomap->type is set appropriately. Hence the reason
+		 * why we need to check whether EXT4_MAP_UNWRITTEN is set
+		 * first.
+		 */
+		if (map.m_flags & EXT4_MAP_UNWRITTEN) {
 			iomap->type = IOMAP_UNWRITTEN;
+		} else if (map.m_flags & EXT4_MAP_MAPPED) {
+			iomap->type = IOMAP_MAPPED;
 		} else {
 			WARN_ON_ONCE(1);
 			return -EIO;