49b9165251
. test74 for mmap functionality . vm: add a mem_file memory type that specifies an mmap()ped memory range, backed by a file . add fdref, an object that keeps track of FD references within VM per process and so knows how to de-duplicate the use of FD's by various mmap()ped ranges; there can be many more than there can be FD's . turned off for now, enable with 'filemap=1' as boot option Change-Id: I640b1126cdaa522a0560301cf6732b7661555672
43 lines
940 B
C
43 lines
940 B
C
|
|
#include <minix/sys_config.h>
|
|
#include <minix/type.h>
|
|
#include <minix/param.h>
|
|
#include <sys/stat.h>
|
|
#include <a.out.h>
|
|
|
|
#include "vm.h"
|
|
#include "vmproc.h"
|
|
|
|
#if _MAIN
|
|
#undef EXTERN
|
|
#define EXTERN
|
|
#endif
|
|
|
|
#define VMP_EXECTMP _NR_PROCS
|
|
#define VMP_NR _NR_PROCS+1
|
|
|
|
EXTERN struct vmproc vmproc[VMP_NR];
|
|
|
|
long enable_filemap;
|
|
|
|
EXTERN kinfo_t kernel_boot_info;
|
|
|
|
#if SANITYCHECKS
|
|
EXTERN int nocheck;
|
|
EXTERN int incheck;
|
|
EXTERN int sc_lastline;
|
|
EXTERN char *sc_lastfile;
|
|
#endif
|
|
|
|
extern struct minix_kerninfo *_minix_kerninfo;
|
|
|
|
/* mem types */
|
|
EXTERN mem_type_t mem_type_anon, /* anonymous memory */
|
|
mem_type_directphys, /* direct physical mapping memory */
|
|
mem_type_anon_contig, /* physically contig anon memory */
|
|
mem_type_cache, /* disk cache */
|
|
mem_type_mappedfile, /* memory with file contents */
|
|
mem_type_shared; /* memory shared by multiple processes */
|
|
|
|
/* total number of memory pages */
|
|
EXTERN int total_pages;
|