linux-kernel - Re: [PATCH v2] rcu/kvfree: Add kvfree_rcu

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Message-ID: <ZscpMfiyoRE95ZiF@pc636>
Date: Thu, 22 Aug 2024 14:04:01 +0200
From: Uladzislau Rezki <urezki@...il.com>
To: Vlastimil Babka <vbabka@...e.cz>
Cc: "Uladzislau Rezki (Sony)" <urezki@...il.com>,
	"Paul E . McKenney" <paulmck@...nel.org>, RCU <rcu@...r.kernel.org>,
	LKML <linux-kernel@...r.kernel.org>,
	Neeraj upadhyay <Neeraj.Upadhyay@....com>,
	Boqun Feng <boqun.feng@...il.com>,
	Joel Fernandes <joel@...lfernandes.org>,
	Frederic Weisbecker <frederic@...nel.org>,
	Oleksiy Avramchenko <oleksiy.avramchenko@...y.com>
Subject: Re: [PATCH v2] rcu/kvfree: Add kvfree_rcu_barrier() API

On Wed, Aug 21, 2024 at 08:06:08PM +0200, Vlastimil Babka wrote:
> On 8/20/24 5:59 PM, Uladzislau Rezki (Sony) wrote:
> > Add a kvfree_rcu_barrier() function. It waits until all
> > in-flight pointers are freed over RCU machinery. It does
> > not wait any GP completion and it is within its right to
> > return immediately if there are no outstanding pointers.
> > 
> > This function is useful when there is a need to guarantee
> > that a memory is fully freed before destroying memory caches.
> > For example, during unloading a kernel module.
> > 
> > Signed-off-by: Uladzislau Rezki (Sony) <urezki@...il.com>
> > Signed-off-by: Vlastimil Babka <vbabka@...e.cz>
> 
> Thanks Ulad, replaced the patch in slab/for-next
> 
You are welcome :)

--
Uladzislau Rezki