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Subject: Re: [PATCH v5] kernel/signal: Signal-based pre-coredump notification
To:     Oleg Nesterov <oleg@redhat.com>
Cc:     Thomas Gleixner <tglx@linutronix.de>,
        Ingo Molnar <mingo@redhat.com>, Borislav Petkov <bp@alien8.de>,
        "H. Peter Anvin" <hpa@zytor.com>,
        Peter Zijlstra <peterz@infradead.org>,
        Arnd Bergmann <arnd@arndb.de>,
        "Eric W. Biederman" <ebiederm@xmission.com>,
        Khalid Aziz <khalid.aziz@oracle.com>,
        Kate Stewart <kstewart@linuxfoundation.org>,
        Helge Deller <deller@gmx.de>,
        Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        Al Viro <viro@zeniv.linux.org.uk>,
        Andrew Morton <akpm@linux-foundation.org>,
        Christian Brauner <christian@brauner.io>,
        Catalin Marinas <catalin.marinas@arm.com>,
        Will Deacon <will.deacon@arm.com>,
        Dave Martin <Dave.Martin@arm.com>,
        Mauro Carvalho Chehab <mchehab+samsung@kernel.org>,
        Michal Hocko <mhocko@kernel.org>,
        Rik van Riel <riel@surriel.com>,
        "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>,
        Roman Gushchin <guro@fb.com>,
        Marcos Paulo de Souza <marcos.souza.org@gmail.com>,
        Dominik Brodowski <linux@dominikbrodowski.net>,
        Cyrill Gorcunov <gorcunov@openvz.org>,
        Yang Shi <yang.shi@linux.alibaba.com>,
        Jann Horn <jannh@google.com>,
        Kees Cook <keescook@chromium.org>, x86@kernel.org,
        linux-kernel@vger.kernel.org, linux-arch@vger.kernel.org,
        "Victor Kamensky (kamensky)" <kamensky@cisco.com>,
        xe-linux-external@cisco.com, Stefan Strogin <sstrogin@cisco.com>,
        Enke Chen <enkechen@cisco.com>
References: <e7ed306f-8992-9d00-bcab-5131159e8d89@cisco.com>
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 <84460a77-a111-404e-4bad-88104a6e246e@cisco.com>
 <20181026082812.GA10581@redhat.com>
 <21f678a8-4001-df36-c26e-e96cf203b1b1@cisco.com>
 <20181029111804.GA24820@redhat.com>
 <0c197608-3b7e-ffd1-8943-801a60beb917@cisco.com>
 <20181030164628.GD7643@redhat.com>
From:   Enke Chen <enkechen@cisco.com>
Message-ID: <b50b14cd-e1a9-ff7d-12e0-c3613e125be9@cisco.com>
Date:   Tue, 30 Oct 2018 17:25:51 -0700
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Hi, Oleg:

On 10/30/18 9:46 AM, Oleg Nesterov wrote:
> On 10/29, Enke Chen wrote:
>>
>> Reviewed-by: Oleg Nesterov <oleg@redhat.com>
> 
> Hmm. I didn't say this ;)
> 
> But OK, feel free to keep this tag.

Thanks.

> 
> I do not like this feauture. But I see no technical problems in this version
> and I never pretented I understand the user-space needs, so I won't argue.

As I explained earlier, the primary application is in the area of network
high-availability / non-stop-forwarding where early fault notification and
early action can help maintain BFD sessions and thus avoid unnecessary
disruption to forwarding while the control-plane is recovering.

-- Enke