From a8b595b22d31f83b715511f59012f152a269d83b Mon Sep 17 00:00:00 2001 From: Jens Axboe Date: Thu, 15 Oct 2020 10:13:07 -0600 Subject: [PATCH] io-wq: assign NUMA node locality if appropriate There was an assumption that kthread_create_on_node() would properly set NUMA affinities in terms of CPUs allowed, but it doesn't. Make sure we do this when creating an io-wq context on NUMA. Cc: stable@vger.kernel.org Stefan Metzmacher Signed-off-by: Jens Axboe --- fs/io-wq.c | 1 + 1 file changed, 1 insertion(+) diff --git a/fs/io-wq.c b/fs/io-wq.c index 0a182f1333e8..149fd2f0927e 100644 --- a/fs/io-wq.c +++ b/fs/io-wq.c @@ -676,6 +676,7 @@ static bool create_io_worker(struct io_wq *wq, struct io_wqe *wqe, int index) kfree(worker); return false; } + kthread_bind_mask(worker->task, cpumask_of_node(wqe->node)); raw_spin_lock_irq(&wqe->lock); hlist_nulls_add_head_rcu(&worker->nulls_node, &wqe->free_list);