block: 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 <tj@kernel.org>
Signed-off-by: Marco Crivellari <marco.crivellari@suse.com>
Reviewed-by: Chaitanya Kulkarni <kch@nvidia.com>
Reviewed-by: Damien Le Moal <dlemoal@kernel.org>
Link: https://patch.msgid.link/20260604105347.168322-1-marco.crivellari@suse.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>

diff --git a/block/blk-zoned.c b/block/blk-zoned.c
index 30cad2bb9291b60f03ab405a0349531b080bc35f..3622211142cfd213e473d1514416497c4406cb83 100644 (file)
--- 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;