linux-kernel - Re: [PATCH v2 6/7] mm, slab: call kvfree_rcu_barrier() from kmem_cache

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Message-ID: <Z7855_cJh493vHNy@pc636>
Date: Wed, 26 Feb 2025 16:57:27 +0100
From: Uladzislau Rezki <urezki@...il.com>
To: Vlastimil Babka <vbabka@...e.cz>
Cc: Uladzislau Rezki <urezki@...il.com>,
	Keith Busch <keith.busch@...il.com>,
	"Paul E. McKenney" <paulmck@...nel.org>,
	Joel Fernandes <joel@...lfernandes.org>,
	Josh Triplett <josh@...htriplett.org>,
	Boqun Feng <boqun.feng@...il.com>, Christoph Lameter <cl@...ux.com>,
	David Rientjes <rientjes@...gle.com>,
	Steven Rostedt <rostedt@...dmis.org>,
	Mathieu Desnoyers <mathieu.desnoyers@...icios.com>,
	Lai Jiangshan <jiangshanlai@...il.com>,
	Zqiang <qiang.zhang1211@...il.com>,
	Julia Lawall <Julia.Lawall@...ia.fr>,
	Jakub Kicinski <kuba@...nel.org>,
	"Jason A. Donenfeld" <Jason@...c4.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Roman Gushchin <roman.gushchin@...ux.dev>,
	Hyeonggon Yoo <42.hyeyoo@...il.com>, linux-mm@...ck.org,
	linux-kernel@...r.kernel.org, rcu@...r.kernel.org,
	Alexander Potapenko <glider@...gle.com>,
	Marco Elver <elver@...gle.com>, Dmitry Vyukov <dvyukov@...gle.com>,
	kasan-dev@...glegroups.com, Jann Horn <jannh@...gle.com>,
	Mateusz Guzik <mjguzik@...il.com>, linux-nvme@...ts.infradead.org,
	leitao@...ian.org
Subject: Re: [PATCH v2 6/7] mm, slab: call kvfree_rcu_barrier() from
 kmem_cache_destroy()

On Wed, Feb 26, 2025 at 04:46:38PM +0100, Vlastimil Babka wrote:
> On 2/26/25 4:42 PM, Uladzislau Rezki wrote:
> > On Wed, Feb 26, 2025 at 03:36:39PM +0100, Vlastimil Babka wrote:
> >> On 2/26/25 3:31 PM, Uladzislau Rezki wrote:
> >>> On Wed, Feb 26, 2025 at 11:59:53AM +0100, Vlastimil Babka wrote:
> >>>> On 2/25/25 7:21 PM, Uladzislau Rezki wrote:
> >>>>>>
> >>>>> WQ_MEM_RECLAIM-patch fixes this for me:
> >>>>
> >>>> Sounds good, can you send a formal patch then?
> >>>>
> >>> Do you mean both? Test case and fix? I can :)
> >>
> >> Sure, but only the fix is for stable. Thanks!
> >>
> > It is taken by Gregg if there is a Fixes tag in the commit.
> > What do you mean: the fix is for stable? The current Linus
> > tree is not suffering from this?
> 
> I just meant the fix should be a Cc: stable, and the testcase not.
> mm/ has an exception from "anything with Fixes: can be taken to stable"
> 
Got it.

--
Uladzislau Rezki