uvm_page_physunload
if (uvm_page_physunload(lcv, freelist, paddrp))
bool uvm_page_physunload(uvm_physseg_t, int, paddr_t *);
ATF_CHECK_EQ(true, uvm_page_physunload(upm, VM_FREELIST_DEFAULT, &p));
ATF_CHECK_EQ(true, uvm_page_physunload(upm, VM_FREELIST_DEFAULT, &p));
ATF_CHECK_EQ(false, uvm_page_physunload(upm, VM_FREELIST_DEFAULT, &p));
ATF_CHECK_EQ(true, uvm_page_physunload(upm, VM_FREELIST_DEFAULT, &p));
ATF_CHECK_EQ(true, uvm_page_physunload(upm, VM_FREELIST_DEFAULT, &p));
ATF_CHECK_EQ(true, uvm_page_physunload(upm, VM_FREELIST_DEFAULT, &p));
ATF_CHECK_EQ(false, uvm_page_physunload(upm, VM_FREELIST_FIRST4G, &p));