From: Pedro Falcato <pfalcato@suse.de>
To: "Liam R. Howlett" <Liam.Howlett@oracle.com>,
Andrew Morton <akpm@linux-foundation.org>,
Vlastimil Babka <vbabka@suse.cz>,
Matthew Wilcox <willy@infradead.org>,
maple-tree@lists.infradead.org, linux-mm@kvack.org,
linux-kernel@vger.kernel.org,
Sidhartha Kumar <sidhartha.kumar@oracle.com>
Subject: Re: [PATCH v2 1/3] testing/radix-tree/maple: Hack around kfree_rcu not existing
Date: Fri, 15 Aug 2025 18:06:49 +0100 [thread overview]
Message-ID: <ttrjb4dhf7w6da3qqlav3kydcpohtimmdewvuxiojdvd3drn5n@rlxb6q656olb> (raw)
In-Reply-To: <rocriz7qo5is6m2dcimj3qiczgv3eoneqwrqvrcpsrtgqnnmmy@eswbhyo2a6w4>
On Fri, Aug 15, 2025 at 11:11:30AM -0400, Liam R. Howlett wrote:
> * Pedro Falcato <pfalcato@suse.de> [250812 12:21]:
> > liburcu doesn't have kfree_rcu (or anything similar). Despite that, we
> > can hack around it in a trivial fashion, by adding a wrapper.
> >
> > This wrapper only works for maple_nodes, and not anything else (due to
> > us not being able to know rcu_head offsets in any way), and thus we take
> > advantage of the type checking to avoid future silent breakage.
> >
> > Reviewed-by: Sidhartha Kumar <sidhartha.kumar@oracle.com>
> > Signed-off-by: Pedro Falcato <pfalcato@suse.de>
>
>
> Andrew,
>
> Please drop this patch set. We will have it go through Vlastimil's tree
> to avoid conflicts with other work and to maintain the userspace testing
> in mm-new while that happens.
In case this helps, Andrew, it's maple_tree-use-kfree_rcu-in-ma_free_rcu.patch
and testing-radix-tree-maple-hack-around-kfree_rcu-not-existing.patch in your series file.
(Yes, I should have used a cover letter here, it would've made it easier to
manage, my mistake)
--
Pedro
prev parent reply other threads:[~2025-08-15 17:06 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-08-12 16:21 Pedro Falcato
2025-08-12 16:21 ` [PATCH v2 2/3] maple_tree: Use kfree_rcu in ma_free_rcu Pedro Falcato
2025-08-12 16:21 ` [PATCH v2 3/3] maple_tree: Replace mt_free_one() with kfree() Pedro Falcato
2025-08-12 19:41 ` [PATCH v2 1/3] testing/radix-tree/maple: Hack around kfree_rcu not existing Liam R. Howlett
2025-08-15 15:11 ` Liam R. Howlett
2025-08-15 17:06 ` Pedro Falcato [this message]
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=ttrjb4dhf7w6da3qqlav3kydcpohtimmdewvuxiojdvd3drn5n@rlxb6q656olb \
--to=pfalcato@suse.de \
--cc=Liam.Howlett@oracle.com \
--cc=akpm@linux-foundation.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mm@kvack.org \
--cc=maple-tree@lists.infradead.org \
--cc=sidhartha.kumar@oracle.com \
--cc=vbabka@suse.cz \
--cc=willy@infradead.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox