diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c
index 27d009bf183f..db3ba140351e 100644
--- a/fs/ext4/inode.c
+++ b/fs/ext4/inode.c
@@ -3333,6 +3333,10 @@ static void ext4_set_iomap(struct inode *inode, struct iomap *iomap,
 	iomap->offset = (u64) map->m_lblk << blkbits;
 	iomap->length = (u64) map->m_len << blkbits;
 
+	if ((map->m_flags & EXT4_MAP_MAPPED) &&
+	    !ext4_test_inode_flag(inode, EXT4_INODE_EXTENTS))
+		iomap->flags |= IOMAP_F_MERGED;
+
 	/*
 	 * Flags passed to ext4_map_blocks() for direct I/O writes can result
 	 * in m_flags having both EXT4_MAP_MAPPED and EXT4_MAP_UNWRITTEN bits