7378 exported_lock held during nfs4 compound processing

*** 611,622 ****
  extern int      makefh_ol(fhandle_t *, struct exportinfo *, uint_t);
  extern int      makefh3(nfs_fh3 *, struct vnode *, struct exportinfo *);
  extern int      makefh3_ol(nfs_fh3 *, struct exportinfo *, uint_t);
  extern vnode_t *nfs_fhtovp(fhandle_t *, struct exportinfo *);
  extern vnode_t *nfs3_fhtovp(nfs_fh3 *, struct exportinfo *);
! extern struct   exportinfo *checkexport(fsid_t *, struct fid *);
! extern struct   exportinfo *checkexport4(fsid_t *, struct fid *, vnode_t *);
  extern void     exi_hold(struct exportinfo *);
  extern void     exi_rele(struct exportinfo *);
  extern struct exportinfo *nfs_vptoexi(vnode_t *, vnode_t *, cred_t *, int *,
      int *, bool_t);
  extern int      nfs_check_vpexi(vnode_t *, vnode_t *, cred_t *,
--- 611,623 ----
  extern int      makefh_ol(fhandle_t *, struct exportinfo *, uint_t);
  extern int      makefh3(nfs_fh3 *, struct vnode *, struct exportinfo *);
  extern int      makefh3_ol(nfs_fh3 *, struct exportinfo *, uint_t);
  extern vnode_t *nfs_fhtovp(fhandle_t *, struct exportinfo *);
  extern vnode_t *nfs3_fhtovp(nfs_fh3 *, struct exportinfo *);
! extern struct   exportinfo *checkexport(fsid_t *, struct fid *, vnode_t *);
! extern struct   exportinfo *checkexport_nohold(fsid_t *, struct fid *,
!     vnode_t *);
  extern void     exi_hold(struct exportinfo *);
  extern void     exi_rele(struct exportinfo *);
  extern struct exportinfo *nfs_vptoexi(vnode_t *, vnode_t *, cred_t *, int *,
      int *, bool_t);
  extern int      nfs_check_vpexi(vnode_t *, vnode_t *, cred_t *,