Variables starting with `d' in vm

• devicepagerops vm/vm_pager.c:87
• dev_pager_haspage vm/device_pager.c:82
• dev_pager_list vm/device_pager.c:56
• devp_object vm/device_pager.h:54
• dfltpagerops vm/vm_pager.h:99
• dpagerdebug vm/device_pager.c:59
• dummy vm/vm_mmap.c:103