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SubjectRe: [PATCH] remove no longer use of pdflush interface
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On Mon, Jun 4, 2012 at 9:53 PM, Fengguang Wu <fengguang.wu@intel.com> wrote:
> Hi Wanpeng,
>
> On Mon, Jun 04, 2012 at 08:40:42PM +0800, Wanpeng Li wrote:
>> From: Wanpeng Li <liwp@linux.vnet.ibm.com>
>>
>> remove no longer use of pdflush interface nr_pdflush_threads.
>
> The patch looks good in itself: the nr_pdflush_threads takes no effect
> for many of the recent kernels. But what's the normal process of
> interface removal?  Shall we carry some warning printk for some time
> first or whatever?

Yes. you have to add printk warning for noticing it deprecated.
And add descriptoin in Documentation/ABI/obsolete/ and
Documentation/feature-removal-schedule.txt

I don't know how long we maintain it. Is there any rule for it?
Maybe 1-year is suitable, IMHO.

Thanks.
--
Kind regards,
Minchan Kim
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