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Subject: Re: [PATCH V4] mm/vmstat: Add events for THP migration without split
To:     Anshuman Khandual <anshuman.khandual@arm.com>, linux-mm@kvack.org
Cc:     Jonathan Corbet <corbet@lwn.net>,
        Steven Rostedt <rostedt@goodmis.org>,
        Ingo Molnar <mingo@redhat.com>,
        Daniel Jordan <daniel.m.jordan@oracle.com>,
        Hugh Dickins <hughd@google.com>,
        Matthew Wilcox <willy@infradead.org>, Zi Yan <ziy@nvidia.com>,
        John Hubbard <jhubbard@nvidia.com>,
        Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>,
        Andrew Morton <akpm@linux-foundation.org>,
        linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org
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From:   Randy Dunlap <rdunlap@infradead.org>
Message-ID: <f360b009-e7b2-db5c-6d46-1daca76bea24@infradead.org>
Date:   Thu, 9 Jul 2020 20:33:01 -0700
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On 7/9/20 8:30 PM, Anshuman Khandual wrote:
> 
> On 07/09/2020 09:04 PM, Randy Dunlap wrote:
>> Hi,
>>
>> I have a few comments on this.
>>
>> a. I reported it very early and should have been Cc-ed.
> 
> I should have Cc-ed you on this V4 patch, sorry about that.
> 
>>
>> b. A patch that applies to mmotm or linux-next would have been better
>> than a full replacement patch.
> I have followed that (i.e patch on mmotm/next as fix) only when the
> required change is smaller as compared to the series on mmotm/next.
> But for others a new patch should be better which can be replaced
> on mmotm and next. At least that is my understanding and would like
> to be corrected otherwise.
> 
>>
>> c. I tried replacing what I believe is the correct/same patch file in mmotm
>> and still have build errors.
> 
> That should not have happened, all new THP migration events are with
> CONFIG_MIGRATION rather than CONFIG_TRANSPARENT_HUGEPAGE previously.

Yes, I could have been mistaken about that last part.  Sorry about that.

-- 
~Randy