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io_uring: Use helper function hrtimer_update_function()

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The field 'function' of struct hrtimer should not be changed directly, as
the write is lockless and a concurrent timer expiry might end up using the
wrong function pointer.

Switch to use hrtimer_update_function() which also performs runtime checks
that it is safe to modify the callback.

Signed-off-by: Nam Cao <namcao@linutronix.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/all/9b33f490fb1d207d3918ef5e116dc3412ae35c1e.1738746927.git.namcao@linutronix.de
This commit is contained in:
Nam Cao
2025-02-05 11:55:14 +01:00
committed by Thomas Gleixner
parent eee00df8e1
commit 3f8d93d137
1 changed files with 1 additions and 1 deletions
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2
io_uring/io_uring.c
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@@ -2421,7 +2421,7 @@ static enum hrtimer_restart io_cqring_min_timer_wakeup(struct hrtimer *timer)
goto out_wake;
}
iowq->t.function = io_cqring_timer_wakeup;
hrtimer_update_function(&iowq->t, io_cqring_timer_wakeup);
hrtimer_set_expires(timer, iowq->timeout);
return HRTIMER_RESTART;
out_wake: