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workqueue: skip the node_nr_active update for non-unbound workqueues

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apply_wqattrs_commit() updates node_nr_active->max unconditionally.
wq->node_nr_active[] is only allocated for unbound workqueues, so guard
the call before per-cpu workqueues start using this path.

No functional change: only unbound workqueues reach apply_wqattrs_*()
today.

Signed-off-by: Breno Leitao <leitao@debian.org>
Signed-off-by: Tejun Heo <tj@kernel.org>
This commit is contained in:
Breno Leitao 2026-08-05 07:52:36 -07:00 committed by Tejun Heo
parent 7cc62d8cd3
commit a5bde5d8fd
1 changed files with 3 additions and 2 deletions
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5
kernel/workqueue.c
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@ -5556,8 +5556,9 @@ static void apply_wqattrs_commit(struct apply_wqattrs_ctx *ctx)
ctx->pwq_tbl[cpu]);
ctx->dfl_pwq = install_unbound_pwq(ctx->wq, -1, ctx->dfl_pwq);
/* update node_nr_active->max */
wq_update_node_max_active(ctx->wq, -1);
/* update node_nr_active->max, which only unbound workqueues have */
if (ctx->wq->flags & WQ_UNBOUND)
wq_update_node_max_active(ctx->wq, -1);
mutex_unlock(&ctx->wq->mutex);
}