./"flags"nX
+/"forw"16t"back"16t"av_forw"16t"av_back"n4X4+
+/"bcount"16t"bufsize"16t"error"16t"edev"nD36+D16+D4+X68-
+/"addr"16t"blkno"16t"resid"16t"proc"nX4+X4+D4+X12+
+/"iodone"16t"vp"16t"pages"n2X20-X
