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Message-ID: <b10d9d85-d8d6-2ee5-53f9-6b5d586b55fb@redhat.com>
Date:   Tue, 1 Aug 2023 18:16:59 +0200
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Subject: Re: [PATCH v2 6/8] mm/huge_memory: remove stale NUMA hinting comment
 from follow_trans_huge_pmd()
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To:     Peter Xu <peterx@redhat.com>
Cc:     linux-kernel@vger.kernel.org, linux-mm@kvack.org,
        linux-fsdevel@vger.kernel.org, kvm@vger.kernel.org,
        linux-kselftest@vger.kernel.org,
        Andrew Morton <akpm@linux-foundation.org>,
        Linus Torvalds <torvalds@linux-foundation.org>,
        liubo <liubo254@huawei.com>,
        Matthew Wilcox <willy@infradead.org>,
        Hugh Dickins <hughd@google.com>,
        Jason Gunthorpe <jgg@ziepe.ca>,
        John Hubbard <jhubbard@nvidia.com>,
        Mel Gorman <mgorman@suse.de>, Shuah Khan <shuah@kernel.org>,
        Paolo Bonzini <pbonzini@redhat.com>
References: <20230801124844.278698-1-david@redhat.com>
 <20230801124844.278698-7-david@redhat.com> <ZMktuATuYhHdAW6M@x1n>
From:   David Hildenbrand <david@redhat.com>
Organization: Red Hat
In-Reply-To: <ZMktuATuYhHdAW6M@x1n>
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On 01.08.23 18:07, Peter Xu wrote:
> On Tue, Aug 01, 2023 at 02:48:42PM +0200, David Hildenbrand wrote:
>> diff --git a/mm/huge_memory.c b/mm/huge_memory.c
>> index 2cd3e5502180..0b709d2c46c6 100644
>> --- a/mm/huge_memory.c
>> +++ b/mm/huge_memory.c
>> @@ -1467,7 +1467,6 @@ struct page *follow_trans_huge_pmd(struct vm_area_struct *vma,
>>   	if ((flags & FOLL_DUMP) && is_huge_zero_pmd(*pmd))
>>   		return ERR_PTR(-EFAULT);
>>   
>> -	/* Full NUMA hinting faults to serialise migration in fault paths */
>>   	if (pmd_protnone(*pmd) && !gup_can_follow_protnone(vma, flags))
>>   		return NULL;
> 
> Perhaps squashing into patch 1?  Thanks,

I decided against it so I don't have to make patch description of patch 
#1 even longer with something that's mostly unrelated to the core change.

-- 
Cheers,

David / dhildenb