[PATCH] RDMA/hfi1: Switch to kvfree_rcu() API

[Uladzislau Rezki (Sony)]

Instead of invoking a synchronize_rcu() to free a pointer
after a grace period we can directly make use of new API
that does the same but in more efficient way.

TO: linux-rdma@xxxxxxxxxxxxxxx
TO: Jason Gunthorpe <jgg@xxxxxxxxxx>
TO: Mike Marciniszyn <mike.marciniszyn@xxxxxxxxxxxxxxxxxxxx>
Acked-by: Mike Marciniszyn <mike.marciniszyn@xxxxxxxxxxxxxxxxxxxx>
Signed-off-by: Uladzislau Rezki (Sony) <urezki@xxxxxxxxx>
---
 drivers/infiniband/hw/hfi1/sdma.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/infiniband/hw/hfi1/sdma.c b/drivers/infiniband/hw/hfi1/sdma.c
index f07d328689d3..7264a35e8f4c 100644
--- a/drivers/infiniband/hw/hfi1/sdma.c
+++ b/drivers/infiniband/hw/hfi1/sdma.c
@@ -1292,8 +1292,7 @@ void sdma_clean(struct hfi1_devdata *dd, size_t num_engines)
 	sdma_map_free(rcu_access_pointer(dd->sdma_map));
 	RCU_INIT_POINTER(dd->sdma_map, NULL);
 	spin_unlock_irq(&dd->sde_map_lock);
-	synchronize_rcu();
-	kfree(dd->per_sdma);
+	kvfree_rcu(dd->per_sdma);
 	dd->per_sdma = NULL;
 
 	if (dd->sdma_rht) {
-- 
2.30.2