From: Karsten Graul <kgraul@linux.ibm.com>
To: Wen Gu <guwen@linux.alibaba.com>, davem@davemloft.net, kuba@kernel.org
Cc: linux-s390@vger.kernel.org, netdev@vger.kernel.org,
linux-kernel@vger.kernel.org, dust.li@linux.alibaba.com,
tonylu@linux.alibaba.com
Subject: Re: [RFC PATCH net v2 1/2] net/smc: Resolve the race between link group access and termination
Date: Wed, 5 Jan 2022 13:03:47 +0100 [thread overview]
Message-ID: <1cf77005-1825-0d34-6d34-e1b513c28113@linux.ibm.com> (raw)
In-Reply-To: <095c6e45-dd9e-1809-ae51-224679783241@linux.alibaba.com>
On 05/01/2022 09:27, Wen Gu wrote:
> On 2022/1/3 6:36 pm, Karsten Graul wrote:
>> On 31/12/2021 10:44, Wen Gu wrote:
>>> On 2021/12/29 8:56 pm, Karsten Graul wrote:
>>>> On 28/12/2021 16:13, Wen Gu wrote:
>>>>> We encountered some crashes caused by the race between the access
>>>>> and the termination of link groups.
> So I think checking conn->alert_token_local has the same effect with checking conn->lgr to
> identify whether the link group pointed by conn->lgr is still healthy and able to be used.
Yeah that sounds like a good solution for that! So is it now guaranteed that conn->lgr is always
set and this check can really be removed completely, or should there be a new helper that checks
conn->lgr and the alert_token, like smc_lgr_valid() ?
next prev parent reply other threads:[~2022-01-05 12:04 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-12-28 15:13 [RFC PATCH net v2 0/2] net/smc: Fix for race in smc link group termination Wen Gu
2021-12-28 15:13 ` [RFC PATCH net v2 1/2] net/smc: Resolve the race between link group access and termination Wen Gu
2021-12-29 12:56 ` Karsten Graul
2021-12-31 9:44 ` Wen Gu
2022-01-03 10:36 ` Karsten Graul
2022-01-05 8:27 ` Wen Gu
2022-01-05 12:03 ` Karsten Graul [this message]
2022-01-06 13:02 ` Wen Gu
2022-01-07 9:54 ` Karsten Graul
2022-01-07 12:04 ` Wen Gu
2021-12-28 15:13 ` [RFC PATCH net v2 2/2] net/smc: Resolve the race between SMC-R link access and clear Wen Gu
2021-12-29 12:51 ` Karsten Graul
2021-12-30 4:00 ` dust.li
2021-12-31 9:45 ` Wen Gu
2022-01-03 10:39 ` Karsten Graul
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