diff --git a/fs/ext4/extents.c b/fs/ext4/extents.c
index fc76bda13852546fabfe3c1ddac96850e0b119b4..1ba8b4ab03a8955baffb2a1bbd97e103d063d629 100644
--- a/fs/ext4/extents.c
+++ b/fs/ext4/extents.c
@@ -4678,6 +4678,10 @@ static int ext4_alloc_file_blocks(struct file *file, ext4_lblk_t offset,
 	if (len <= EXT_UNWRITTEN_MAX_LEN)
 		flags |= EXT4_GET_BLOCKS_NO_NORMALIZE;
 
+	/* Wait all existing dio workers, newcomers will block on i_mutex */
+	ext4_inode_block_unlocked_dio(inode);
+	inode_dio_wait(inode);
+
 	/*
 	 * credits to insert 1 extent into extent tree
 	 */
@@ -4741,6 +4745,8 @@ static int ext4_alloc_file_blocks(struct file *file, ext4_lblk_t offset,
 		goto retry;
 	}
 
+	ext4_inode_resume_unlocked_dio(inode);
+
 	return ret > 0 ? ret2 : ret;
 }