nfs: remove the unused max_deviceinfo_size field from struct pnfs_layoutdriver_type

max_deviceinfo_size is not set anywhere, remove it.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>

fs/nfs/pnfs.h

@@ -133,7 +133,6 @@ struct pnfs_layoutdriver_type {
 	const char *name;
 	struct module *owner;
 	unsigned flags;
-	unsigned max_deviceinfo_size;
 	unsigned max_layoutget_response;
 
 	int (*set_layoutdriver) (struct nfs_server *, const struct nfs_fh *);

fs/nfs/pnfs_dev.c

@@ -110,9 +110,6 @@ nfs4_get_device_info(struct nfs_server *server,
 	 * GETDEVICEINFO's maxcount
 	 */
 	max_resp_sz = server->nfs_client->cl_session->fc_attrs.max_resp_sz;
-	if (server->pnfs_curr_ld->max_deviceinfo_size &&
-	    server->pnfs_curr_ld->max_deviceinfo_size < max_resp_sz)
-		max_resp_sz = server->pnfs_curr_ld->max_deviceinfo_size;
 	max_pages = nfs_page_array_len(0, max_resp_sz);
 	dprintk("%s: server %p max_resp_sz %u max_pages %d\n",
 		__func__, server, max_resp_sz, max_pages);