rev. 1.201 src/sys/kern/kern_prot.c
rev. 1.334 src/sys/kern/vfs_export.c
rev. 1.95 src/sys/nfsserver/nfs_srvsock.c
rev. 1.137 src/sys/nfsserver/nfs_srvsubs.c
rev. 1.53 src/sys/sys/ucred.h
rev. 1.273 src/sys/ufs/ufs/ufs_vnops.c
Use the refcount API to manage the reference count for user credentials
rather than using pool mutexes.
MFC changes:
The cr_mtxp field of struct ucred is preserved as padding to keep structure
size intact. nfs_srvsock.c change is nullified by rev. 1.96, that was MFCed
as rev. 1.94.2.2.
OKed by: jhb
LOR: 187