rds: remove the _reuse_ rds ib pool statistics

Orabug: 22124214
fix a regress introduced by ceb99ba

The above commit introduced the two new statistics to rds_ib_statistics.

       uint64_t        s_ib_rdma_mr_1m_pool_reuse;
       uint64_t        s_ib_rdma_mr_8k_pool_reuse;

But didn't have rds-info changed accordingly thus rds-info gets shifted stats.

this removes these two stats.

Acked-by: Santosh Shilimkar <[email protected]>
Acked-by: Ajaykumar Hotchandani <[email protected]>
Signed-off-by: Wengang Wang <[email protected]>

Author: Wengang-oracle

net/rds/ib.h

@@ -490,8 +490,6 @@ struct rds_ib_statistics {
 	uint64_t        s_ib_rdma_mr_1m_pool_flush;
 	uint64_t        s_ib_rdma_mr_1m_pool_wait;
 	uint64_t        s_ib_rdma_mr_1m_pool_depleted;
-	uint64_t	s_ib_rdma_mr_1m_pool_reuse;
-	uint64_t	s_ib_rdma_mr_8k_pool_reuse;
 	uint64_t	s_ib_atomic_cswp;
 	uint64_t	s_ib_atomic_fadd;
 	uint64_t        s_ib_srq_lows;

net/rds/ib_rdma.c

@@ -320,10 +320,6 @@ static inline struct rds_ib_mr *rds_ib_reuse_fmr(struct rds_ib_mr_pool *pool)
 	clear_bit(CLEAN_LIST_BUSY_BIT, flag);
 	preempt_enable();
 	if (ibmr) {
-		if (pool->pool_type == RDS_IB_MR_8K_POOL)
-			rds_ib_stats_inc(s_ib_rdma_mr_8k_pool_reuse);
-		else
-			rds_ib_stats_inc(s_ib_rdma_mr_1m_pool_reuse);
 		spin_lock_bh(&pool->busy_lock);
 		list_add(&ibmr->pool_list, &pool->busy_list);
 		spin_unlock_bh(&pool->busy_lock);