./"type"16t"state"16t"len"nDDX
+/"iocount"16t"iodispatch"16t"err"nXDD
+/"resid"16t"parentbp"16t"pages/addr"nXXX
+/"holes"16t"shadow"16t"procp"nXXX
+/"iofunc"16t"iargp"16tnXX
+/"mutex"
.$<<mutex
