diff --git a/fs/nfsd/nfsd.h b/fs/nfsd/nfsd.h
index 1cccf5a3c034..64315890eef5 100644
--- a/fs/nfsd/nfsd.h
+++ b/fs/nfsd/nfsd.h
@@ -146,10 +146,7 @@ extern u64 nfsd_io_cache_write __read_mostly;
 
 extern int nfsd_max_blksize;
 
-static inline int nfsd_v4client(struct svc_rqst *rq)
-{
-	return rq && rq->rq_prog == NFS_PROGRAM && rq->rq_vers == 4;
-}
+bool nfsd_v4client(struct svc_rqst *rqstp);
 
 /*
  * lockd binding
diff --git a/fs/nfsd/nfssvc.c b/fs/nfsd/nfssvc.c
index 9cc8489978a3..c04ef9d180ce 100644
--- a/fs/nfsd/nfssvc.c
+++ b/fs/nfsd/nfssvc.c
@@ -207,6 +207,11 @@ int nfsd_minorversion(struct nfsd_net *nn, u32 minorversion, enum vers_op change
 	return 0;
 }
 
+bool nfsd_v4client(struct svc_rqst *rqstp)
+{
+	return rqstp && rqstp->rq_prog == NFS_PROGRAM && rqstp->rq_vers == 4;
+}
+
 bool nfsd_net_try_get(struct net *net) __must_hold(rcu)
 {
 	struct nfsd_net *nn = net_generic(net, nfsd_net_id);