--- busybox-1.15.1/editors/vi.c.original	2009-09-18 19:29:12.000000000 +0800
+++ busybox-1.15.1/editors/vi.c	2009-09-18 19:29:33.000000000 +0800
@@ -2364,16 +2364,11 @@
 		return -2;
 	}
 	charcnt = 0;
-	/* By popular request we do not open file with O_TRUNC,
-	 * but instead ftruncate() it _after_ successful write.
-	 * Might reduce amount of data lost on power fail etc.
-	 */
-	fd = open(fn, (O_WRONLY | O_CREAT), 0666);
+	fd = open(fn, (O_WRONLY | O_CREAT | O_TRUNC), 0666);
 	if (fd < 0)
 		return -1;
 	cnt = last - first + 1;
 	charcnt = full_write(fd, first, cnt);
-	ftruncate(fd, charcnt);
 	if (charcnt == cnt) {
 		// good write
 		//file_modified = FALSE;