| From a8b595b22d31f83b715511f59012f152a269d83b Mon Sep 17 00:00:00 2001 |
| From: Jens Axboe <axboe@kernel.dk> |
| Date: Thu, 15 Oct 2020 10:13:07 -0600 |
| Subject: io-wq: assign NUMA node locality if appropriate |
| |
| From: Jens Axboe <axboe@kernel.dk> |
| |
| commit a8b595b22d31f83b715511f59012f152a269d83b upstream. |
| |
| 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 <metze@samba.org> |
| Signed-off-by: Jens Axboe <axboe@kernel.dk> |
| Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
| |
| --- |
| fs/io-wq.c | 1 + |
| 1 file changed, 1 insertion(+) |
| |
| --- a/fs/io-wq.c |
| +++ b/fs/io-wq.c |
| @@ -654,6 +654,7 @@ static bool create_io_worker(struct io_w |
| 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); |