sys/src/pagefile.c

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// _Id: pagefile.c,v 1.2 2004-10-19 10:45:46 roart Exp $
// _Locker:  $

// Author. Roar Thronæs.

#include <asm/bitops.h>
#include <linux/config.h>
#include <pfldef.h>
#include <ssdef.h>

#ifdef CONFIG_VMS

extern int myswapfile;

int mmg_allocpagfil1(int size, int * page) {

  struct _pfl * pfl = myswapfile;
  if (pfl==0)
    return 0;
  if (pfl->pfl_l_frepagcnt==0)
    return 0;
  int bit=find_next_zero_bit(pfl->pfl_l_bitmap,pfl->pfl$l_bitmapsiz<<3,0);
#if 0
  if (bit==0)
    return 0;
  bit--;
#endif
  set_bit(bit,pfl->pfl_l_bitmap);
  *page=bit;
  pfl->pfl_l_frepagcnt--;
  return SS__NORMAL;
}

int mmg_dallocpagfil1(int page) {

  struct _pfl * pfl = myswapfile;
  if (pfl==0)
    return 0;
  test_and_clear_bit(page,pfl->pfl_l_bitmap);
  pfl->pfl_l_frepagcnt++;
  return SS__NORMAL;
}

#endif

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