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From: Xiaoming Ni <nixiaoming@huawei.com>
To: Kees Cook <keescook@chromium.org>
Cc: <mcgrof@kernel.org>, <yzaikin@google.com>, <adobriyan@gmail.com>,
	<mingo@kernel.org>, <peterz@infradead.org>,
	<akpm@linux-foundation.org>, <yamada.masahiro@socionext.com>,
	<bauerman@linux.ibm.com>, <gregkh@linuxfoundation.org>,
	<skhan@linuxfoundation.org>, <dvyukov@google.com>,
	<svens@stackframe.org>, <joel@joelfernandes.org>,
	<tglx@linutronix.de>, <Jisheng.Zhang@synaptics.com>,
	<pmladek@suse.com>, <bigeasy@linutronix.de>,
	<linux-kernel@vger.kernel.org>, <linux-fsdevel@vger.kernel.org>,
	<wangle6@huawei.com>
Subject: Re: [PATCH 2/4] proc/sysctl: add shared variables -1
Date: Sat, 16 May 2020 11:05:53 +0800	[thread overview]
Message-ID: <2656ae51-5348-0b37-d76d-1460b8eb3f10@huawei.com> (raw)
In-Reply-To: <202005151946.C6335E92@keescook>

On 2020/5/16 10:47, Kees Cook wrote:
> On Sat, May 16, 2020 at 10:32:19AM +0800, Xiaoming Ni wrote:
>> On 2020/5/16 0:05, Kees Cook wrote:
>>> On Fri, May 15, 2020 at 05:06:28PM +0800, Xiaoming Ni wrote:
>>>> On 2020/5/15 16:06, Kees Cook wrote:
>>>>> On Fri, May 15, 2020 at 12:33:42PM +0800, Xiaoming Ni wrote:
>>>>>> Add the shared variable SYSCTL_NEG_ONE to replace the variable neg_one
>>>>>> used in both sysctl_writes_strict and hung_task_warnings.
>>>>>>
>>>>>> Signed-off-by: Xiaoming Ni <nixiaoming@huawei.com>
>>>>>> ---
>>>>>>     fs/proc/proc_sysctl.c     | 2 +-
>>>>>>     include/linux/sysctl.h    | 1 +
>>>>>>     kernel/hung_task_sysctl.c | 3 +--
>>>>>>     kernel/sysctl.c           | 3 +--
>>>>>
>>>>> How about doing this refactoring in advance of the extraction patch?
>>>> Before  advance of the extraction patch, neg_one is only used in one file,
>>>> does it seem to have no value for refactoring?
>>>
>>> I guess it doesn't matter much, but I think it's easier to review in the
>>> sense that neg_one is first extracted and then later everything else is
>>> moved.
>>>
>> Later, when more features sysctl interface is moved to the code file, there
>> will be more variables that need to be extracted.
>> So should I only extract the neg_one variable here, or should I extract all
>> the variables used by multiple features?
> 
> Hmm -- if you're going to do a consolidation pass, then nevermind, I
> don't think order will matter then.
> 
> Thank you for the cleanup! Sorry we're giving you back-and-forth advice!
> 
> -Kees
> 

Sorry, I don't fully understand.
Does this mean that there is no need to adjust the patch order or the 
order of variables in sysctl_vals?
Should I extract only SYSCTL_NEG_ONE or should I extract all variables?

Thanks
Xiaoming Ni


  reply	other threads:[~2020-05-16  3:06 UTC|newest]

Thread overview: 20+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-05-15  4:33 [PATCH 0/4] Move the sysctl interface to the corresponding feature code file Xiaoming Ni
2020-05-15  4:33 ` [PATCH 1/4] hung_task: Move hung_task sysctl interface to hung_task_sysctl.c Xiaoming Ni
2020-05-15  8:04   ` Kees Cook
2020-05-15  8:56     ` Xiaoming Ni
2020-05-15 16:03       ` Kees Cook
2020-05-15 20:21         ` Luis Chamberlain
2020-05-15  4:33 ` [PATCH 2/4] proc/sysctl: add shared variables -1 Xiaoming Ni
2020-05-15  8:06   ` Kees Cook
2020-05-15  9:06     ` Xiaoming Ni
2020-05-15 16:05       ` Kees Cook
2020-05-16  2:32         ` Xiaoming Ni
2020-05-16  2:47           ` Kees Cook
2020-05-16  3:05             ` Xiaoming Ni [this message]
2020-05-17  2:38               ` Kees Cook
2020-05-15  4:33 ` [PATCH 3/4] watchdog: move watchdog sysctl to watchdog.c Xiaoming Ni
2020-05-15  8:09   ` Kees Cook
2020-05-15  9:17     ` Xiaoming Ni
2020-05-15  4:33 ` [PATCH 4/4] sysctl: Add register_sysctl_init() interface Xiaoming Ni
2020-05-15  8:10   ` Kees Cook
2020-05-15  9:39     ` Xiaoming Ni

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