/*
* Allocate the maps for this task post fork
* We have a hackish fix for init that would be nice
* resolve.
*
* FIXME: we need to move udata.u_top into p-> in order to
* support banked swapping.
*/
int pagemap_alloc(ptptr p)
{
uint8_t *ptr = (uint8_t *) & p->p_page;
int needed = maps_needed(udata.u_top);
int i;
#ifdef SWAPDEV
/* Throw our toys out of our pram until we have enough room */
while (needed > pfptr)
if (swapneeded(p, 1) == NULL)
return ENOMEM;
#else
if (needed > pfptr) /* We have no swap so poof... */
return ENOMEM;
#endif
/* Pages in the low then repeat the top one */
for (i = 0; i < needed; i++)
ptr[i] = pfree[--pfptr];
while (i < 4) {
ptr[i] = ptr[i - 1];
i++;
}
return 0;
}
int pagemap_alloc(ptptr p)
{
if (pfptr == 0)
swapneeded(p, 1);
if (pfptr == 0)
return ENOMEM;
p->p_page = pfree[--pfptr];
return 0;
}
/*
* Allocate the maps for this task post fork
* We have a hackish fix for init that would be nice
* resolve.
*/
int pagemap_alloc(ptptr p)
{
uint8_t *ptr = (uint8_t *) & p->p_page;
int needed = maps_needed(udata.u_top);
#ifdef SWAPDEV
/* Throw our toys out of our pram until we have enough room */
while (needed > pfptr)
if (swapneeded(p, 1) == NULL)
return ENOMEM;
#else
if (needed > pfptr) /* We have no swap so poof... */
return ENOMEM;
#endif
*ptr = pfree[--pfptr];
if (needed == 1)
ptr[1] = *ptr;
else
ptr[1] = pfree[--pfptr];
return 0;
}
