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When laying out objects in a ZONE_INTERRUPT zone, allow them to cross

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a page boundary, since we've already allocated all our contiguous kva
space up front.  This eliminates some memory wastage, and allows us to
actually reach the # of objects were specified in the zinit() call.

Reviewed by: peter, dillon
This commit is contained in:
jlemon 2001-11-17 00:40:48 +00:00
parent ac0c0d2f8c
commit 86ee7095b9
1 changed files with 4 additions and 2 deletions
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6
sys/vm/vm_zone.c
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@ -373,7 +373,9 @@ _zget(vm_zone_t z)
KASSERT(z != NULL, ("invalid zone"));
if (z->zflags & ZONE_INTERRUPT) {
item = (char *) z->zkva + z->zpagecount * PAGE_SIZE;
nbytes = z->zpagecount * PAGE_SIZE;
nbytes -= nbytes % z->zsize;
item = (char *) z->zkva + nbytes;
for (i = 0; ((i < z->zalloc) && (z->zpagecount < z->zpagemax));
i++) {
vm_offset_t zkva;
@ -390,7 +392,7 @@ _zget(vm_zone_t z)
atomic_add_int(&zone_kmem_pages, 1);
cnt.v_wire_count++;
}
nitems = (i * PAGE_SIZE) / z->zsize;
nitems = ((z->zpagecount * PAGE_SIZE) - nbytes) / z->zsize;
} else {
/* Please check zdestroy() when changing this! */
nbytes = z->zalloc * PAGE_SIZE;