nfsd: have nfsd_test_lock use the nfsd_file cache

Signed-off-by: Jeff Layton <jeff.layton@primarydata.com>
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>

fs/nfsd/nfs4state.c

@@ -6605,11 +6605,11 @@ out:
  */
 static __be32 nfsd_test_lock(struct svc_rqst *rqstp, struct svc_fh *fhp, struct file_lock *lock)
 {
-	struct file *file;
-	__be32 err = nfsd_open(rqstp, fhp, S_IFREG, NFSD_MAY_READ, &file);
+	struct nfsd_file *nf;
+	__be32 err = nfsd_file_acquire(rqstp, fhp, NFSD_MAY_READ, &nf);
 	if (!err) {
-		err = nfserrno(vfs_test_lock(file, lock));
-		fput(file);
+		err = nfserrno(vfs_test_lock(nf->nf_file, lock));
+		nfsd_file_put(nf);
 	}
 	return err;
 }