Revisiting "too small to fail"

32 KiB doesn't seem like a "small" allocation to me -- anything more than PAGE_SIZE can fail (or trigger the OOM killer) due to fragmentation. Perhaps the thing to do here is to reduce the size that is considered small, until small is a page or less?

By way of example, the Xen hypervisor has taken considerable effort to ensure all memory allocation are a page or less, or have fallback paths that do so.