The worker free list is RCU protected, and checks for workers going away
when iterating it. There's no need to hold the wq->lock around the
lookup.
Signed-off-by: Jens Axboe <axboe@xxxxxxxxx>
---
io_uring/io-wq.c | 3 ---
1 file changed, 3 deletions(-)
diff --git a/io_uring/io-wq.c b/io_uring/io-wq.c
index 399e9a15c38d..3e7025b9e0dd 100644
--- a/io_uring/io-wq.c
+++ b/io_uring/io-wq.c
@@ -909,13 +909,10 @@ void io_wq_enqueue(struct io_wq *wq, struct io_wq_work *work)
clear_bit(IO_ACCT_STALLED_BIT, &acct->flags);
raw_spin_unlock(&acct->lock);
- raw_spin_lock(&wq->lock);
rcu_read_lock();
do_create = !io_wq_activate_free_worker(wq, acct);
rcu_read_unlock();
- raw_spin_unlock(&wq->lock);
-
if (do_create && ((work_flags & IO_WQ_WORK_CONCURRENT) ||
!atomic_read(&acct->nr_running))) {
bool did_create;
--
2.40.1
