From 7e712f292e7f01e91d09e83eb7b9526f77f66c71 Mon Sep 17 00:00:00 2001 From: Marco Crivellari Date: Thu, 4 Jun 2026 12:53:47 +0200 Subject: [PATCH] block: Add WQ_PERCPU to alloc_workqueue users MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit 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 Signed-off-by: Marco Crivellari Reviewed-by: Chaitanya Kulkarni Reviewed-by: Damien Le Moal Link: https://patch.msgid.link/20260604105347.168322-1-marco.crivellari@suse.com Signed-off-by: Jens Axboe --- block/blk-zoned.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/block/blk-zoned.c b/block/blk-zoned.c index 30cad2bb9291..3622211142cf 100644 --- a/block/blk-zoned.c +++ b/block/blk-zoned.c @@ -1902,7 +1902,7 @@ static int disk_alloc_zone_resources(struct gendisk *disk, goto free_hash; disk->zone_wplugs_wq = - alloc_workqueue("%s_zwplugs", WQ_MEM_RECLAIM | WQ_HIGHPRI, + alloc_workqueue("%s_zwplugs", WQ_MEM_RECLAIM | WQ_HIGHPRI | WQ_PERCPU, pool_size, disk->disk_name); if (!disk->zone_wplugs_wq) goto destroy_pool;