linux-kernel - Re: [PATCH v2 0/5] Move kvfree

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Message-ID: <Z2AmLkyTF1h7FNvB@pc636>
Date: Mon, 16 Dec 2024 14:07:58 +0100
From: Uladzislau Rezki <urezki@...il.com>
To: Vlastimil Babka <vbabka@...e.cz>
Cc: "Uladzislau Rezki (Sony)" <urezki@...il.com>, linux-mm@...ck.org,
	"Paul E . McKenney" <paulmck@...nel.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	RCU <rcu@...r.kernel.org>, LKML <linux-kernel@...r.kernel.org>,
	Christoph Lameter <cl@...ux.com>, Pekka Enberg <penberg@...nel.org>,
	David Rientjes <rientjes@...gle.com>,
	Joonsoo Kim <iamjoonsoo.kim@....com>,
	Roman Gushchin <roman.gushchin@...ux.dev>,
	Hyeonggon Yoo <42.hyeyoo@...il.com>,
	Oleksiy Avramchenko <oleksiy.avramchenko@...y.com>
Subject: Re: [PATCH v2 0/5] Move kvfree_rcu() into SLAB (v2)

On Sun, Dec 15, 2024 at 06:30:02PM +0100, Vlastimil Babka wrote:
> On 12/12/24 19:02, Uladzislau Rezki (Sony) wrote:
> > Hello!
> > 
> > This is v2. It is based on the Linux 6.13-rc2. The first version is
> > here:
> > 
> > https://lore.kernel.org/linux-mm/20241210164035.3391747-4-urezki@gmail.com/T/
> > 
> > The difference between v1 and v2 is that, the preparation process is
> > done in original place instead and after that there is one final move.
> 
> Looks good, will include in slab/for-next
> 
> I think patch 5 should add more explanation to the commit message - the
> subthread started by Christoph could provide content :) Can you summarize so
> I can amend the commit log?
>
<snip>
mm/slab: Move kvfree_rcu() into SLAB

Move kvfree_rcu() functionality to the slab_common.c file.

The reason of being kvfree_rcu() functionality as part of SLAB is
that, there is a clear trend and need of closer integration. One
of the recent example is creating a barrier function for SLAB caches.

Another reason is to prevent of having several implementations of
RCU machinery for reclaiming objects after a GP. As future steps,
it can be more integrated(easier) with SLAB internals.
<snip>

--
Uladzislau Rezki