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From: Ming Qing <a0yami@mailbox.org>
To: Pablo Neira Ayuso <pablo@netfilter.org>
Cc: Harald Welte <laforge@gnumonks.org>,
	horms@kernel.org, andrew+netdev@lunn.ch, davem@davemloft.net,
	Eric Dumazet <edumazet@google.com>,
	Jakub Kicinski <kuba@kernel.org>, Paolo Abeni <pabeni@redhat.com>,
	osmocom-net-gprs@lists.osmocom.org, netdev@vger.kernel.org,
	linux-kernel@vger.kernel.org
Subject: Re: [PATCH net v3] gtp: serialize PDP context updates
Date: Fri, 14 Aug 2026 00:31:59 +0800 (CST)	[thread overview]
Message-ID: <2125081283.36735.1786638719082@app.mailbox.org> (raw)
In-Reply-To: <anrpdUa_ngVKH6NR@chamomile>


> 在 2026/08/11 17:20 CST Pablo Neira Ayuso <pablo@netfilter.org> 写道:
> This can go away too, for gtp_genl_del_pdp(), the mutex replaces this
> incorrect rcu read size lock.
> 
> Thanks.
> 
> > +	mutex_unlock(&gtp_pdp_lock);
> >  	return err;
> >  }
> >  
> > -- 
> > 2.53.0
> >

gtp_find_pdp() calls gtp_find_dev(), which uses 
dev_get_by_index_rcu(). Should I keep a narrow RCU read-side section 
around gtp_find_pdp(), while using the mutex to protect the PDP context?

Thanks,
Qing

  reply	other threads:[~2026-08-13 16:32 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-08-11  2:20 [PATCH net v3] gtp: serialize PDP context updates Qing Ming
2026-08-11  2:43 ` Kuniyuki Iwashima
2026-08-11  9:20 ` Pablo Neira Ayuso
2026-08-13 16:31   ` Ming Qing [this message]
2026-08-13 17:39     ` Pablo Neira Ayuso

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