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From: Jean-Philippe Brucker <jean-philippe@linaro.org>
To: Yunsheng Lin <linyunsheng@huawei.com>
Cc: linuxarm@openeuler.org, ilias.apalodimas@linaro.org,
	salil.mehta@huawei.com, netdev@vger.kernel.org,
	moyufeng@huawei.com, alexanderduyck@fb.com, brouer@redhat.com,
	kuba@kernel.org
Subject: Re: [PATCH net-next v2 4/4] net: hns3: support skb's frag page recycling based on page pool
Date: Thu, 24 Mar 2022 18:09:28 +0000	[thread overview]
Message-ID: <Yjyz2DIcXiyf7/pL@myrica> (raw)
In-Reply-To: <e0795eee-26d8-1289-e241-b88c967027d7@huawei.com>

Hi,

Sorry for the delay, I had to focus on other issues.

On Mon, Feb 07, 2022 at 10:54:40AM +0800, Yunsheng Lin wrote:
> When there are more than two steps for the freeing side, the only case I know
> about the skb cloning and expanding case, which is fixed by the below commit:
> 2cc3aeb5eccc (skbuff: Fix a potential race while recycling page_pool packets)
> 
> Maybe there are other case we missed?

Yes it's something similar, I found the problem in skb_try_coalesce().
I sent a possible fix, we can continue the discussion there:

https://lore.kernel.org/netdev/20220324172913.26293-1-jean-philippe@linaro.org/

Thanks,
Jean


  reply	other threads:[~2022-03-24 18:09 UTC|newest]

Thread overview: 26+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-08-06  2:46 [PATCH net-next v2 0/4] add frag page support in " Yunsheng Lin
2021-08-06  2:46 ` [PATCH net-next v2 1/4] page_pool: keep pp info as long as page pool owns the page Yunsheng Lin
2021-08-06  2:46 ` [PATCH net-next v2 2/4] page_pool: add interface to manipulate frag count in page pool Yunsheng Lin
2021-08-10 14:58   ` Jesper Dangaard Brouer
2021-08-11  0:48     ` Yunsheng Lin
2021-08-12 15:17   ` Jesper Dangaard Brouer
2021-08-06  2:46 ` [PATCH net-next v2 3/4] page_pool: add frag page recycling support " Yunsheng Lin
2021-08-06  2:46 ` [PATCH net-next v2 4/4] net: hns3: support skb's frag page recycling based on " Yunsheng Lin
2021-09-08  8:31   ` moyufeng
2021-09-08 15:08     ` Jakub Kicinski
2021-09-08 15:26       ` Ilias Apalodimas
2021-09-08 15:57         ` Jakub Kicinski
2021-09-08 16:47           ` Jesper Dangaard Brouer
2021-09-08 16:51           ` Ilias Apalodimas
2022-01-26 14:30   ` Jean-Philippe Brucker
2022-01-28  4:00     ` Yunsheng Lin
2022-01-28  9:21       ` Jean-Philippe Brucker
2022-01-29  8:44         ` Yunsheng Lin
2022-02-03  9:48           ` Jean-Philippe Brucker
2022-02-07  2:54             ` Yunsheng Lin
2022-03-24 18:09               ` Jean-Philippe Brucker [this message]
2021-08-10 14:01 ` [PATCH net-next v2 0/4] add frag page support in " Jakub Kicinski
2021-08-10 14:23   ` Jesper Dangaard Brouer
2021-08-10 14:43     ` Jakub Kicinski
2021-08-10 15:09       ` Alexander Duyck
2021-08-11  1:06         ` [Linuxarm] " Yunsheng Lin

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