Source to ufs/mfsiom.h
* Copyright (c) 1989 The Regents of the University of California.
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* @(#)mfsiom.h 7.2 (Berkeley) 6/28/90
#define MFS_MAPREG (MAXPHYS/NBPG + 2) /* Kernel mapping pte's */
#define MFS_MAPSIZE 10 /* Size of alloc map for pte's */