Messages in this thread | | | Date | Wed, 15 Jul 2020 20:56:28 +0200 | From | Sebastian Andrzej Siewior <> | Subject | Re: [PATCH 1/1] rcu/tree: Drop the lock before entering to page allocator |
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On 2020-07-15 20:35:37 [+0200], Uladzislau Rezki (Sony) wrote: > @@ -3306,6 +3307,9 @@ kvfree_call_rcu_add_ptr_to_bulk(struct kfree_rcu_cpu *krcp, void *ptr) > if (IS_ENABLED(CONFIG_PREEMPT_RT)) > return false; > > + preempt_disable(); > + krc_this_cpu_unlock(*krcp, *flags);
Now you enter memory allocator with disabled preemption. This isn't any better but we don't have a warning for this yet. What happened to the part where I asked for a spinlock_t?
> + > /* > * NOTE: For one argument of kvfree_rcu() we can > * drop the lock and get the page in sleepable
Sebastian
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