net: rds: Use time_after() for time comparison

To be future-proof and for better readability the time comparisons are modified
to use time_after() instead of raw math.
Signed-off-by: NManuel Schölling <manuel.schoelling@gmx.de>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

net/rds/ib_send.c

@@ -298,7 +298,7 @@ void rds_ib_send_cq_comp_handler(struct ib_cq *cq, void *context)
 		rds_ib_stats_inc(s_ib_tx_cq_event);
 
 		if (wc.wr_id == RDS_IB_ACK_WR_ID) {
-			if (ic->i_ack_queued + HZ/2 < jiffies)
+			if (time_after(jiffies, ic->i_ack_queued + HZ/2))
 				rds_ib_stats_inc(s_ib_tx_stalled);
 			rds_ib_ack_send_complete(ic);
 			continue;
@@ -315,7 +315,7 @@ void rds_ib_send_cq_comp_handler(struct ib_cq *cq, void *context)
 
 			rm = rds_ib_send_unmap_op(ic, send, wc.status);
 
-			if (send->s_queued + HZ/2 < jiffies)
+			if (time_after(jiffies, send->s_queued + HZ/2))
 				rds_ib_stats_inc(s_ib_tx_stalled);
 
 			if (send->s_op) {

net/rds/iw_send.c

@@ -232,7 +232,7 @@ void rds_iw_send_cq_comp_handler(struct ib_cq *cq, void *context)
 		}
 
 		if (wc.wr_id == RDS_IW_ACK_WR_ID) {
-			if (ic->i_ack_queued + HZ/2 < jiffies)
+			if (time_after(jiffies, ic->i_ack_queued + HZ/2))
 				rds_iw_stats_inc(s_iw_tx_stalled);
 			rds_iw_ack_send_complete(ic);
 			continue;
@@ -267,7 +267,7 @@ void rds_iw_send_cq_comp_handler(struct ib_cq *cq, void *context)
 
 			send->s_wr.opcode = 0xdead;
 			send->s_wr.num_sge = 1;
-			if (send->s_queued + HZ/2 < jiffies)
+			if (time_after(jiffies, send->s_queued + HZ/2))
 				rds_iw_stats_inc(s_iw_tx_stalled);
 
 			/* If a RDMA operation produced an error, signal this right