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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 128ea9f6cc ("workqueue: Add system_percpu_wq and system_dfl_wq")
   commit 930c2ea566 ("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 <tj@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Marco Crivellari <marco.crivellari@suse.com>
Signed-off-by: Keith Busch <kbusch@kernel.org>
master
Marco Crivellari 2026-02-23 11:23:28 +01:00 committed by Keith Busch
parent 12f5fb5ee1
commit e8e1a4c0fb
2 changed files with 4 additions and 3 deletions
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5
drivers/nvme/target/core.c
View File

@ -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;

2
drivers/nvme/target/tcp.c
View File

@ -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;