NetBSD master CVS tree commits

[source%NetBSD.ORG@localhost]

pk
Tue Dec  2 05:54:52 PST 1997
Update of /cvsroot/src/sys/dev
In directory netbsd1:/var/slash-tmp/cvs-serv28823

Modified Files:
        vndvar.h vnd.c 
Log Message:
Pull over fixes from vm_swap.c:
        - guard against synchronous I/O completion
        - avoid race conditions
        - use bgetvp/brelvp to properly maintain the vnode holdcount
          and clean/dirty buffer lists.