NFSv4.1 use pnfs_device maxcount for the blocklayout gdia_maxcount

Signed-off-by: Andy Adamson <andros@netapp.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
diff --git a/fs/nfs/blocklayout/blocklayout.c b/fs/nfs/blocklayout/blocklayout.c
index 1e5fdd3..e242bbf 100644
--- a/fs/nfs/blocklayout/blocklayout.c
+++ b/fs/nfs/blocklayout/blocklayout.c
@@ -1089,6 +1089,7 @@
 	dev->pgbase = 0;
 	dev->pglen = PAGE_SIZE * max_pages;
 	dev->mincount = 0;
+	dev->maxcount = max_resp_sz - nfs41_maxgetdevinfo_overhead;
 
 	dprintk("%s: dev_id: %s\n", __func__, dev->dev_id.data);
 	rc = nfs4_proc_getdeviceinfo(server, dev, NULL);