5045 use atomic_{inc,dec}_* instead of atomic_add_*

*** 89,99 ****
          avl_index_t where;
  
          mr = avl_find(root, &key, &where);
          if ((mr == NULL) && (insert != NULL)) {
                  avl_insert(root, (void *)insert, where);
!                 atomic_add_32(&insert->r_refcount, 1);
                  return (NULL);
          }
  
          return (mr);
  }
--- 89,99 ----
          avl_index_t where;
  
          mr = avl_find(root, &key, &where);
          if ((mr == NULL) && (insert != NULL)) {
                  avl_insert(root, (void *)insert, where);
!                 atomic_inc_32(&insert->r_refcount);
                  return (NULL);
          }
  
          return (mr);
  }
*** 252,262 ****
          mutex_exit(&rs->rs_rdma_lock);
  
          ASSERT(!(found && found != mr));
  
          if (mr_ret) {
!                 atomic_add_32(&mr->r_refcount, 1);
                  *mr_ret = mr;
          }
  
          ret = 0;
  out:
--- 252,262 ----
          mutex_exit(&rs->rs_rdma_lock);
  
          ASSERT(!(found && found != mr));
  
          if (mr_ret) {
!                 atomic_inc_32(&mr->r_refcount);
                  *mr_ret = mr;
          }
  
          ret = 0;
  out:
*** 397,407 ****
          if (mr->r_use_once || force) {
                  avl_remove(&rs->rs_rdma_keys, &mr->r_rb_node);
                  RB_CLEAR_NODE(&mr->r_rb_node);
                  zot_me = 1;
          } else {
!                 atomic_add_32(&mr->r_refcount, 1);
          }
          mutex_exit(&rs->rs_rdma_lock);
  
          /*
           * May have to issue a dma_sync on this memory region.
--- 397,407 ----
          if (mr->r_use_once || force) {
                  avl_remove(&rs->rs_rdma_keys, &mr->r_rb_node);
                  RB_CLEAR_NODE(&mr->r_rb_node);
                  zot_me = 1;
          } else {
!                 atomic_inc_32(&mr->r_refcount);
          }
          mutex_exit(&rs->rs_rdma_lock);
  
          /*
           * May have to issue a dma_sync on this memory region.
*** 636,646 ****
          mutex_enter(&rs->rs_rdma_lock);
          mr = rdsv3_mr_tree_walk(&rs->rs_rdma_keys, r_key, NULL);
          if (!mr)
                  err = -EINVAL;  /* invalid r_key */
          else
!                 atomic_add_32(&mr->r_refcount, 1);
          mutex_exit(&rs->rs_rdma_lock);
  
          if (mr) {
                  mr->r_trans->sync_mr(mr->r_trans_private, DMA_TO_DEVICE);
                  rm->m_rdma_mr = mr;
--- 636,646 ----
          mutex_enter(&rs->rs_rdma_lock);
          mr = rdsv3_mr_tree_walk(&rs->rs_rdma_keys, r_key, NULL);
          if (!mr)
                  err = -EINVAL;  /* invalid r_key */
          else
!                 atomic_inc_32(&mr->r_refcount);
          mutex_exit(&rs->rs_rdma_lock);
  
          if (mr) {
                  mr->r_trans->sync_mr(mr->r_trans_private, DMA_TO_DEVICE);
                  rm->m_rdma_mr = mr;