linux-kernel - Re: [PATCH 00/14] replace call_rcu by kfree_rcu for simple kmem_cache

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Message-ID: <fc3fb837-6f3c-4955-899d-1be002d17d70@paulmck-laptop>
Date: Wed, 12 Jun 2024 16:04:19 -0700
From: "Paul E. McKenney" <paulmck@...nel.org>
To: Jens Axboe <axboe@...nel.dk>
Cc: Jakub Kicinski <kuba@...nel.org>, Julia Lawall <Julia.Lawall@...ia.fr>,
	linux-block@...r.kernel.org, kernel-janitors@...r.kernel.org,
	bridge@...ts.linux.dev, linux-trace-kernel@...r.kernel.org,
	Mathieu Desnoyers <mathieu.desnoyers@...icios.com>,
	kvm@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org,
	"Naveen N. Rao" <naveen.n.rao@...ux.ibm.com>,
	Christophe Leroy <christophe.leroy@...roup.eu>,
	Nicholas Piggin <npiggin@...il.com>, netdev@...r.kernel.org,
	wireguard@...ts.zx2c4.com, linux-kernel@...r.kernel.org,
	ecryptfs@...r.kernel.org, Neil Brown <neilb@...e.de>,
	Olga Kornievskaia <kolga@...app.com>, Dai Ngo <Dai.Ngo@...cle.com>,
	Tom Talpey <tom@...pey.com>, linux-nfs@...r.kernel.org,
	linux-can@...r.kernel.org, Lai Jiangshan <jiangshanlai@...il.com>,
	netfilter-devel@...r.kernel.org, coreteam@...filter.org,
	Vlastimil Babka <vbabka@...e.cz>
Subject: Re: [PATCH 00/14] replace call_rcu by kfree_rcu for simple
 kmem_cache_free callback

On Wed, Jun 12, 2024 at 04:52:57PM -0600, Jens Axboe wrote:
> On 6/12/24 4:37 PM, Paul E. McKenney wrote:
> > [PATCH 09/14] block: replace call_rcu by kfree_rcu for simple kmem_cache_free callback
> > 	I don't see a kmem_cache_destroy(), but then again, I also don't
> > 	see the kmem_cache_create().  Unless someone can see what I am
> > 	not seeing, let's wait.
> 
> It's in that same file:
> 
> blk_ioc_init()
> 
> the cache itself never goes away, as the ioc code is not unloadable. So
> I think the change there should be fine.

Thank you, Jens!  (And to Jakub for motivating me to go look.)

So to update the scorecared, 05/14, 09/14, 11/14 and 12/14 are OK and
can go ahead.

							Thanx, Paul