diff --git a/fs/ocfs2/file.c b/fs/ocfs2/file.c
index a39067f4dd55c02619493d6af665f5920c4aa7fa..ba1790e52ff2364bd027454650ceef6a9ba227b9 100644
--- a/fs/ocfs2/file.c
+++ b/fs/ocfs2/file.c
@@ -2439,10 +2439,14 @@ static ssize_t ocfs2_file_write_iter(struct kiocb *iocb,
 	/* buffered aio wouldn't have proper lock coverage today */
 	BUG_ON(ret == -EIOCBQUEUED && !(file->f_flags & O_DIRECT));
 
+	if (unlikely(written <= 0))
+		goto no_sync;
+
 	if (((file->f_flags & O_DSYNC) && !direct_io) || IS_SYNC(inode) ||
 	    ((file->f_flags & O_DIRECT) && !direct_io)) {
-		ret = filemap_fdatawrite_range(file->f_mapping, *ppos,
-					       *ppos + count - 1);
+		ret = filemap_fdatawrite_range(file->f_mapping,
+					       iocb->ki_pos - written,
+					       iocb->ki_pos - 1);
 		if (ret < 0)
 			written = ret;
 
@@ -2453,10 +2457,12 @@ static ssize_t ocfs2_file_write_iter(struct kiocb *iocb,
 		}
 
 		if (!ret)
-			ret = filemap_fdatawait_range(file->f_mapping, *ppos,
-						      *ppos + count - 1);
+			ret = filemap_fdatawait_range(file->f_mapping,
+						      iocb->ki_pos - written,
+						      iocb->ki_pos - 1);
 	}
 
+no_sync:
 	/*
 	 * deep in g_f_a_w_n()->ocfs2_direct_IO we pass in a ocfs2_dio_end_io
 	 * function pointer which is called when o_direct io completes so that