sunrpc: use better NUMA affinities

Use NUMA aware allocations to reduce latencies and increase throughput.

sunrpc kthreads can use kthread_create_on_node() if pool_mode is
"percpu" or "pernode", and svc_prepare_thread()/svc_init_buffer() can
also take into account NUMA node affinity for memory allocations.

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
CC: "J. Bruce Fields" <bfields@fieldses.org>
CC: Neil Brown <neilb@suse.de>
CC: David Miller <davem@davemloft.net>
Reviewed-by: Greg Banks <gnb@fastmail.fm>
[bfields@redhat.com: fix up caller nfs41_callback_up]
Signed-off-by: J. Bruce Fields <bfields@redhat.com>

2 files changed, 3 insertions, 3 deletions

diff --git a/fs/lockd/svc.c b/fs/lockd/svc.c
index abfff9d7979d..c061b9aa7ddb 100644
--- a/fs/lockd/svc.c
+++ b/fs/lockd/svc.c
@@ -282,7 +282,7 @@ int lockd_up(void)
         /*
          * Create the kernel thread and wait for it to start.
          */
-        nlmsvc_rqst = svc_prepare_thread(serv, &serv->sv_pools[0]);
+        nlmsvc_rqst = svc_prepare_thread(serv, &serv->sv_pools[0], NUMA_NO_NODE);
         if (IS_ERR(nlmsvc_rqst)) {
                 error = PTR_ERR(nlmsvc_rqst);
                 nlmsvc_rqst = NULL;
diff --git a/fs/nfs/callback.c b/fs/nfs/callback.c
index e3d294269058..516f3375e067 100644
--- a/fs/nfs/callback.c
+++ b/fs/nfs/callback.c
@@ -125,7 +125,7 @@ nfs4_callback_up(struct svc_serv *serv)
         else
                 goto out_err;
 
-        return svc_prepare_thread(serv, &serv->sv_pools[0]);
+        return svc_prepare_thread(serv, &serv->sv_pools[0], NUMA_NO_NODE);
 
 out_err:
         if (ret == 0)
@@ -199,7 +199,7 @@ nfs41_callback_up(struct svc_serv *serv, struct rpc_xprt *xprt)
         INIT_LIST_HEAD(&serv->sv_cb_list);
         spin_lock_init(&serv->sv_cb_lock);
         init_waitqueue_head(&serv->sv_cb_waitq);
-        rqstp = svc_prepare_thread(serv, &serv->sv_pools[0]);
+        rqstp = svc_prepare_thread(serv, &serv->sv_pools[0], NUMA_NO_NODE);
         if (IS_ERR(rqstp)) {
                 svc_xprt_put(serv->sv_bc_xprt);
                 serv->sv_bc_xprt = NULL;