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2023-11-07 5e8555e3ea324daaf0e38422bcba48c4df33a0d9

 kernel/fs/timerfd.c
.. .. @@ -471,7 +471,11 @@
471 471  				break;
472 472  		}
473 473  		spin_unlock_irq(&ctx->wqh.lock);
474 -		cpu_relax();
474 +
475 +		if (isalarm(ctx))
476 +			hrtimer_grab_expiry_lock(&ctx->t.alarm.timer);
477 +		else
478 +			hrtimer_grab_expiry_lock(&ctx->t.tmr);
475 479  	}
476 480  
477 481  	/*

..	..	@@ -471,7 +471,11 @@
471	471	break;
472	472	}
473	473	spin_unlock_irq(&ctx->wqh.lock);
474		- cpu_relax();
	474	+
	475	+ if (isalarm(ctx))
	476	+ hrtimer_grab_expiry_lock(&ctx->t.alarm.timer);
	477	+ else
	478	+ hrtimer_grab_expiry_lock(&ctx->t.tmr);
475	479	}
476	480
477	481	/*