md/raid5: unset WQ_CPU_INTENSIVE for raid5 unbound workqueue

JIRA: https://issues.redhat.com/browse/RHEL-106845

commit 3ec8db6
Author: Ryo Takakura <ryotkkr98@gmail.com>
Date:   Sun Jun 1 10:37:02 2025 +0900

    md/raid5: unset WQ_CPU_INTENSIVE for raid5 unbound workqueue

    When specified with WQ_CPU_INTENSIVE, the workqueue doesn't
    participate in concurrency management. This behaviour is already
    accounted for WQ_UNBOUND workqueues given that they are assigned
    to their own worker threads.

    Unset WQ_CPU_INTENSIVE as the use of flag has no effect when
    used with WQ_UNBOUND.

    Signed-off-by: Ryo Takakura <ryotkkr98@gmail.com>
    Acked-by: Tejun Heo <tj@kernel.org>
    Link: https://lore.kernel.org/linux-raid/20250601013702.64640-1-ryotkkr98@gmail.com
    Signed-off-by: Yu Kuai <yukuai3@huawei.com>

Signed-off-by: Ming Lei <ming.lei@redhat.com>

Author: Ming Lei

drivers/md/raid5.c

@@ -9040,7 +9040,7 @@ static int __init raid5_init(void)
 	int ret;
 
 	raid5_wq = alloc_workqueue("raid5wq",
-		WQ_UNBOUND|WQ_MEM_RECLAIM|WQ_CPU_INTENSIVE|WQ_SYSFS, 0);
+		WQ_UNBOUND|WQ_MEM_RECLAIM|WQ_SYSFS, 0);
 	if (!raid5_wq)
 		return -ENOMEM;