./"type"16t"state"16t"len"nDDJ
+/"iocount"16t"iodispatch"16t"err"nJDD
+/"resid"16t"parentbp"16t"pages/addr"nJJJ
+/"holes"16t"shadow"16t"procp"nJJJ
+/"iofunc"16t"iargp"16tnJJ
+/"mutex"
.$<<mutex
