481 	int *credits;  in wait_for_free_credits()  local
495 	credits = server->ops->get_credits_field(server, optype);  in wait_for_free_credits()
497 	if (*credits <= 0 && optype == CIFS_ECHO_OP)  in wait_for_free_credits()
506 		*credits -= 1;  in wait_for_free_credits()
508 		scredits = *credits;  in wait_for_free_credits()
514 		cifs_dbg(FYI, "%s: remove %u credits total=%d\n",  in wait_for_free_credits()
531 		if (*credits < num_credits) {  in wait_for_free_credits()
532 			scredits = *credits;  in wait_for_free_credits()
537 				has_credits(server, credits, num_credits), t);  in wait_for_free_credits()
541 				scredits = *credits;  in wait_for_free_credits()
558 			 * credits to compound requests.  in wait_for_free_credits()
560 			 * starved for credits by single-credit requests.  in wait_for_free_credits()
563 			 * there are >MAX_COMPOUND credits available.  in wait_for_free_credits()
565 			 * credits in flight to avoid triggering this check  in wait_for_free_credits()
566 			 * for servers that are slow to hand out credits on  in wait_for_free_credits()
571 			    *credits <= MAX_COMPOUND) {  in wait_for_free_credits()
577 					has_credits(server, credits,  in wait_for_free_credits()
583 					scredits = *credits;  in wait_for_free_credits()
608 				*credits -= num_credits;  in wait_for_free_credits()
614 			scredits = *credits;  in wait_for_free_credits()
621 			cifs_dbg(FYI, "%s: remove %u credits total=%d\n",  in wait_for_free_credits()
641 	int *credits;  in wait_for_compound_request()  local
644 	credits = server->ops->get_credits_field(server, flags & CIFS_OP_MASK);  in wait_for_compound_request()
647 	scredits = *credits;  in wait_for_compound_request()
650 	if (*credits < num) {  in wait_for_compound_request()
653 		 * credits for other reasons (e.g. requests are coming out of  in wait_for_compound_request()
654 		 * order and the server delays granting more credits until it  in wait_for_compound_request()
656 		 * credits there may be situations when we try to send  in wait_for_compound_request()
657 		 * a compound request but we don't have enough credits. At this  in wait_for_compound_request()
659 		 * additional credits or fail the request. If at least one  in wait_for_compound_request()
661 		 * server will return enough credits to satisfy this compound  in wait_for_compound_request()
665 		 * stuck on waiting for credits.  in wait_for_compound_request()
685 		      size_t *num, struct cifs_credits *credits)  in cifs_wait_mtu_credits()  argument
688 	credits->value = 0;  in cifs_wait_mtu_credits()
689 	credits->instance = server->reconnect_instance;  in cifs_wait_mtu_credits()
780 	struct cifs_credits credits = { .value = 0, .instance = 0 };  in cifs_call_async()  local
790 		credits.value = 1;  in cifs_call_async()
791 		credits.instance = instance;  in cifs_call_async()
798 	 * We can't use credits obtained from the previous session to send this  in cifs_call_async()
799 	 * request. Check if there were reconnects after we obtained credits and  in cifs_call_async()
804 		add_credits_and_wake_if(server, &credits, optype);  in cifs_call_async()
811 		add_credits_and_wake_if(server, &credits, optype);  in cifs_call_async()
834 		revert_current_mid(server, mid->credits);  in cifs_call_async()
844 	add_credits_and_wake_if(server, &credits, optype);  in cifs_call_async()
981 	struct cifs_credits credits = {  in cifs_compound_callback()  local
986 	add_credits(server, &credits, mid->optype);  in cifs_compound_callback()
1069 	struct cifs_credits credits[MAX_COMPOUND] = {  in compound_send_recv()  local
1095 	 * credits if the server doesn't grant credits to the outstanding  in compound_send_recv()
1106 		credits[i].value = 1;  in compound_send_recv()
1107 		credits[i].instance = instance;  in compound_send_recv()
1119 	 * All the parts of the compound chain belong obtained credits from the  in compound_send_recv()
1120 	 * same session. We can not use credits obtained from the previous  in compound_send_recv()
1122 	 * we obtained credits and return -EAGAIN in such cases to let callers  in compound_send_recv()
1128 			add_credits(server, &credits[j], optype);  in compound_send_recv()
1142 				add_credits(server, &credits[j], optype);  in compound_send_recv()
1150 		 * to calculate credits properly. Wake up this thread only when  in compound_send_recv()
1172 	 * will not receive a response to - return credits back  in compound_send_recv()
1176 			add_credits(server, &credits[i], optype);  in compound_send_recv()
1182 	 * that any credits taken from the server structure on the client have  in compound_send_recv()
1184 	 * we will collect credits granted by the server in the mid callbacks  in compound_send_recv()
1185 	 * and add those credits to the server structure.  in compound_send_recv()
1219 				credits[i].value = 0;  in compound_send_recv()
1353 	struct cifs_credits credits = { .value = 1, .instance = 0 };  in SendReceive()  local
1383 	rc = wait_for_free_request(server, flags, &credits.instance);  in SendReceive()
1397 		add_credits(server, &credits, 0);  in SendReceive()
1429 			add_credits(server, &credits, 0);  in SendReceive()
1437 		add_credits(server, &credits, 0);  in SendReceive()
1453 	add_credits(server, &credits, 0);  in SendReceive()
1729 	/* set up first two iov for signature check and to get credits */  in cifs_readv_receive()