From: Marco Crivellari Date: Mon, 23 Feb 2026 10:23:28 +0000 (+0100) Subject: nvme: add WQ_PERCPU to alloc_workqueue users X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=e8e1a4c0fb2571e19277edc0292bee6102f3652a;p=thirdparty%2Fkernel%2Flinux.git nvme: add WQ_PERCPU to alloc_workqueue users This continues the effort to refactor workqueue APIs, which began with the introduction of new workqueues and a new alloc_workqueue flag in: commit 128ea9f6ccfb ("workqueue: Add system_percpu_wq and system_dfl_wq") commit 930c2ea566af ("workqueue: Add new WQ_PERCPU flag") The refactoring is going to alter the default behavior of alloc_workqueue() to be unbound by default. With the introduction of the WQ_PERCPU flag (equivalent to !WQ_UNBOUND), any alloc_workqueue() caller that doesn’t explicitly specify WQ_UNBOUND must now use WQ_PERCPU. For more details see the Link tag below. In order to keep alloc_workqueue() behavior identical, explicitly request WQ_PERCPU. Link: https://lore.kernel.org/all/20250221112003.1dSuoGyc@linutronix.de/ Suggested-by: Tejun Heo Reviewed-by: Christoph Hellwig Signed-off-by: Marco Crivellari Signed-off-by: Keith Busch --- diff --git a/drivers/nvme/target/core.c b/drivers/nvme/target/core.c index d49f41790e4ed..03cc7d5f9683d 100644 --- a/drivers/nvme/target/core.c +++ b/drivers/nvme/target/core.c @@ -1942,12 +1942,13 @@ static int __init nvmet_init(void) if (!nvmet_bvec_cache) return -ENOMEM; - zbd_wq = alloc_workqueue("nvmet-zbd-wq", WQ_MEM_RECLAIM, 0); + zbd_wq = alloc_workqueue("nvmet-zbd-wq", WQ_MEM_RECLAIM | WQ_PERCPU, + 0); if (!zbd_wq) goto out_destroy_bvec_cache; buffered_io_wq = alloc_workqueue("nvmet-buffered-io-wq", - WQ_MEM_RECLAIM, 0); + WQ_MEM_RECLAIM | WQ_PERCPU, 0); if (!buffered_io_wq) goto out_free_zbd_work_queue; diff --git a/drivers/nvme/target/tcp.c b/drivers/nvme/target/tcp.c index acc71a26733f9..4b8b02341ddc3 100644 --- a/drivers/nvme/target/tcp.c +++ b/drivers/nvme/target/tcp.c @@ -2225,7 +2225,7 @@ static int __init nvmet_tcp_init(void) int ret; nvmet_tcp_wq = alloc_workqueue("nvmet_tcp_wq", - WQ_MEM_RECLAIM | WQ_HIGHPRI, 0); + WQ_MEM_RECLAIM | WQ_HIGHPRI | WQ_PERCPU, 0); if (!nvmet_tcp_wq) return -ENOMEM;