svcrdma: Remove unneeded spin locks from __svc_rdma_free

At the time __svc_rdma_free is called, we are guaranteed that all references
to this transport are gone. There is, therefore, no need to protect the
resource lists with a spin lock.

Signed-off-by: Tom Tucker <tom@opengridcomputing.com>

1 files changed, 0 insertions, 4 deletions

diff --git a/net/sunrpc/xprtrdma/svc_rdma_transport.c b/net/sunrpc/xprtrdma/svc_rdma_transport.c
index 6fddd588c031..7647789a1f68 100644
--- a/net/sunrpc/xprtrdma/svc_rdma_transport.c
+++ b/net/sunrpc/xprtrdma/svc_rdma_transport.c
@@ -1027,7 +1027,6 @@ static void __svc_rdma_free(struct work_struct *work)
          * cm_id because the device ptr is needed to unmap the dma in
          * svc_rdma_put_context.
          */
-        spin_lock_bh(&rdma->sc_read_complete_lock);
         while (!list_empty(&rdma->sc_read_complete_q)) {
                 struct svc_rdma_op_ctxt *ctxt;
                 ctxt = list_entry(rdma->sc_read_complete_q.next,
@@ -1036,10 +1035,8 @@ static void __svc_rdma_free(struct work_struct *work)
                 list_del_init(&ctxt->dto_q);
                 svc_rdma_put_context(ctxt, 1);
         }
-        spin_unlock_bh(&rdma->sc_read_complete_lock);
 
         /* Destroy queued, but not processed recv completions */
-        spin_lock_bh(&rdma->sc_rq_dto_lock);
         while (!list_empty(&rdma->sc_rq_dto_q)) {
                 struct svc_rdma_op_ctxt *ctxt;
                 ctxt = list_entry(rdma->sc_rq_dto_q.next,
@@ -1048,7 +1045,6 @@ static void __svc_rdma_free(struct work_struct *work)
                 list_del_init(&ctxt->dto_q);
                 svc_rdma_put_context(ctxt, 1);
         }
-        spin_unlock_bh(&rdma->sc_rq_dto_lock);
 
         /* Warn if we leaked a resource or under-referenced */
         WARN_ON(atomic_read(&rdma->sc_ctxt_used) != 0);