jtk
Fri May 10 18:51:06 EDT 1996
Update of /a/cvsroot/src/sys/miscfs/nullfs
In directory pain.lcs.mit.edu:/a/tmp/cvs-serv6182

Modified Files:
	null.h null_subr.c null_vfsops.c null_vnops.c 
Log Message:
Add locking code to avoid deadlocks on vnode reclaim, which means the
addition of null_lookup, null_lock, null_unlock, null_islocked.


jtk
Fri May 10 18:57:56 EDT 1996
Update of /a/cvsroot/src/sys/miscfs/union
In directory pain.lcs.mit.edu:/a/tmp/cvs-serv6696

Modified Files:
	union_vnops.c 
Log Message:
Implement proper `..' locking in lookup code to avoid many potential
deadlocks.

copy up properly when adding a link to lower-layer only file.
(I believe there are still more deadlocks remaining.)