func (out *OutBuf) Mmap(filesize uint64) (err error) {
	oldlen := len(out.buf)
	if oldlen != 0 {
		out.munmap()
	}

	for {
		if err = out.fallocate(filesize); err != syscall.EINTR {
			break
		}
	}
	if err != nil {
		// Some file systems do not support fallocate. We ignore that error as linking
		// can still take place, but you might SIGBUS when you write to the mmapped
		// area.

		}

		// Add the existing block to the full list.
		block.next = a.full
		a.full = block
	}

	// Allocate a new block.
	block = (*traceRegionAllocBlock)(sysAlloc(unsafe.Sizeof(traceRegionAllocBlock{}), &memstats.other_sys))
	if block == nil {
		throw("traceRegion: out of memory")
	}

	// Allocate space for our current request, so we always make
	// progress.
	block.off.Store(n)

		// include valid port range in error
		validPorts := r.portRange.String()
		return &ErrNotInRange{validPorts}
	}

	allocated, err := r.alloc.Allocate(offset)
	if err != nil {
		// update metrics
		r.metrics.incrementAllocationErrors("static")
		return err
	}
	if !allocated {
		// update metrics
		r.metrics.incrementAllocationErrors("static")
		return ErrAllocated
	}

	// update metrics

		t.Fatalf("unexpected error: %v", err)
	}

	// Allocate a port inside the valid port range
	if err := storage.Allocate(30100); err != nil {
		t.Fatal(err)
	}

	// Try to allocate the same port in the local bitmap
	// The local bitmap stores the offset of the port
	// offset = port - base (30100 - 30000 = 100)
	ok, err := backing.Allocate(100)
	if err != nil {
		t.Fatal(err)
	}

}

func (c *Controller) NodeIsSuitable(ctx context.Context, model Model) (bool, error) {
	indices, err := c.allocate(ctx, model)
	return len(indices) == len(c.requests), err
}

func (c *Controller) Allocate(ctx context.Context, model Model) ([]*resourceapi.NamedResourcesAllocationResult, error) {
	indices, err := c.allocate(ctx, model)
	if err != nil {
		return nil, err
	}
	if len(indices) != len(c.requests) {

			}

			allocation, createErr := controller.Allocate(tCtx, tc.model)
			if createErr != nil {
				if !tc.expectAllocateErr {
					tCtx.Fatalf("unexpected allocate error: %v", createErr)
				}
				return
			}
			if tc.expectAllocateErr {
				tCtx.Fatalf("did not get expected allocate error")
			}

			expectAllocation := []*resourceapi.NamedResourcesAllocationResult{}

		traceRelease(trace)
	}

	// If we sweep spanBudget spans without finding any free
	// space, just allocate a fresh span. This limits the amount
	// of time we can spend trying to find free space and
	// amortizes the cost of small object sweeping over the
	// benefit of having a full free span to allocate from. By
	// setting this to 100, we limit the space overhead to 1%.
	//

	for i := 10; i < 200; i++ {
		// The objects we're allocating here are pointer-ful. Some will
		// max out their size class, which are the ones we want.
		// We also allocate from small to large, so that the object which
		// maxes out its size class is the last one allocated in that class.
		// This allocation pattern leaves the next object in the class
		// unallocated, which we need to reproduce the bug.
		objs = append(objs, make([]*byte, i))

			return false, fmt.Errorf("checking node %q and resources of driver %q: %w", nodeName, driverName, err)
		}
		if !okay {
			return false, nil
		}
	}
	return true, nil
}

func (c claimController) allocate(ctx context.Context, nodeName string, resources resources) (string, *resourcev1alpha2.AllocationResult, error) {
	allocation := &resourcev1alpha2.AllocationResult{
		Shareable: c.claimParameters.Shareable,

		// and all options returned by contextOptions are known.
		return "", err
	}
	// InitLabels() may allocate a new unique SELinux label in kubelet memory. The label is *not* allocated
	// in the container runtime. Clear it to avoid memory problems.
	// ReleaseLabel on non-allocated label is NOOP.
	selinux.ReleaseLabel(processLabel)

	return fileLabel, nil
}