common/os/vmem.c

175  * vmp->vm_freemap & (1 << n) is non-zero iff vmp->vm_freelist[n] is non-empty.
179  * the maintenance of vm_freemap by making it easy to tell when we're taking
432 	vmp->vm_freemap |= VS_SIZE(vprev);
452 		ASSERT(vmp->vm_freemap & VS_SIZE(vsp->vs_kprev));
453 		vmp->vm_freemap ^= VS_SIZE(vsp->vs_kprev);
919 		flist = lowbit(P2ALIGN(vmp->vm_freemap, size));
921 		flist = lowbit(P2ALIGN(vmp->vm_freemap, 1UL << hb));
993 			flist = lowbit(P2ALIGN(vmp->vm_freemap, size));
996 			if ((vmp->vm_freemap >> hb) == 0 ||
1000 			flist = lowbit(P2ALIGN(vmp->vm_freemap, 1UL << hb));
1018 				flist = lowbit(P2ALIGN(vmp->vm_freemap,
1274 			flist = lowbit(P2ALIGN(vmp->vm_freemap, size));
1276 			flist = lowbit(P2ALIGN(vmp->vm_freemap, 1UL << hb));