Merge tag 'io_uring-6.4-2023-05-26' of git://git.kernel.dk/linux

Pull io_uring fix from Jens Axboe:
 "Just a single fix for the conditional schedule with the SQPOLL thread,
  dropping the uring_lock if we do need to reschedule"

* tag 'io_uring-6.4-2023-05-26' of git://git.kernel.dk/linux:
  io_uring: unlock sqd->lock before sq thread release CPU

Author: torvalds

io_uring/sqpoll.c

@@ -255,9 +255,13 @@ static int io_sq_thread(void *data)
 			sqt_spin = true;
 
 		if (sqt_spin || !time_after(jiffies, timeout)) {
-			cond_resched();
 			if (sqt_spin)
 				timeout = jiffies + sqd->sq_thread_idle;
+			if (unlikely(need_resched())) {
+				mutex_unlock(&sqd->lock);
+				cond_resched();
+				mutex_lock(&sqd->lock);
+			}
 			continue;
 		}