Always #include <sys/mutex.h>: need struct mutex for struct vm_page_md
Always #include <sys/mutex.h>: need struct mutex for struct vm_page_md

problem noted by landry@
ok dlg@

orumin/openbsd-efivars,orumin/openbsd-efivars,orumin/openbsd-efivars,orumin/openbsd-efivars