From: Eric Dumazet <eric.dumazet@gmail.com>
To: Pablo Neira Ayuso <pablo@netfilter.org>,
Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>,
Florian Westphal <fw@strlen.de>
Cc: netfilter-devel@vger.kernel.org, netdev <netdev@vger.kernel.org>,
Eric Dumazet <edumazet@google.com>,
Eric Dumazet <eric.dumazet@gmail.com>
Subject: [PATCH net] netfilter: nf_tables: prefer kfree_rcu(ptr, rcu) variant
Date: Tue, 22 Feb 2022 10:13:31 -0800 [thread overview]
Message-ID: <20220222181331.811085-1-eric.dumazet@gmail.com> (raw)
From: Eric Dumazet <edumazet@google.com>
While kfree_rcu(ptr) _is_ supported, it has some limitations.
Given that 99.99% of kfree_rcu() users [1] use the legacy
two parameters variant, and @catchall objects do have an rcu head,
simply use it.
Choice of kfree_rcu(ptr) variant was probably not intentional.
[1] including calls from net/netfilter/nf_tables_api.c
Signed-off-by: Eric Dumazet <edumazet@google.com>
---
net/netfilter/nf_tables_api.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/net/netfilter/nf_tables_api.c b/net/netfilter/nf_tables_api.c
index 5fa16990da95177791dfaa9e7bb31c92f3cae096..ef79d8d09773588cc399113fd5bcf584c592f039 100644
--- a/net/netfilter/nf_tables_api.c
+++ b/net/netfilter/nf_tables_api.c
@@ -4502,7 +4502,7 @@ static void nft_set_catchall_destroy(const struct nft_ctx *ctx,
list_for_each_entry_safe(catchall, next, &set->catchall_list, list) {
list_del_rcu(&catchall->list);
nft_set_elem_destroy(set, catchall->elem, true);
- kfree_rcu(catchall);
+ kfree_rcu(catchall, rcu);
}
}
@@ -5669,7 +5669,7 @@ static void nft_setelem_catchall_remove(const struct net *net,
list_for_each_entry_safe(catchall, next, &set->catchall_list, list) {
if (catchall->elem == elem->priv) {
list_del_rcu(&catchall->list);
- kfree_rcu(catchall);
+ kfree_rcu(catchall, rcu);
break;
}
}
--
2.35.1.473.g83b2b277ed-goog
next reply other threads:[~2022-02-22 18:13 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-02-22 18:13 Eric Dumazet [this message]
2022-02-22 19:46 ` [PATCH net] netfilter: nf_tables: prefer kfree_rcu(ptr, rcu) variant Florian Westphal
2022-02-22 20:07 ` Eric Dumazet
2022-02-23 8:22 ` Pablo Neira Ayuso
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=20220222181331.811085-1-eric.dumazet@gmail.com \
--to=eric.dumazet@gmail.com \
--cc=edumazet@google.com \
--cc=fw@strlen.de \
--cc=kadlec@blackhole.kfki.hu \
--cc=netdev@vger.kernel.org \
--cc=netfilter-devel@vger.kernel.org \
--cc=pablo@netfilter.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;
as well as URLs for NNTP newsgroup(s).