linux-kernel - Re: [RFC PATCH 3/6] mm/userfaultfd: add __mcopy_atomic_hugetlb for huge page UFFDIO

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Date:	Tue, 7 Jun 2016 09:35:00 -0700
From:	Mike Kravetz <mike.kravetz@...cle.com>
To:	Hillf Danton <hillf.zj@...baba-inc.com>, linux-mm@...ck.org,
	linux-kernel@...r.kernel.org
Cc:	"'Andrea Arcangeli'" <aarcange@...hat.com>,
	"'Hugh Dickins'" <hughd@...gle.com>,
	"'Dave Hansen'" <dave.hansen@...ux.intel.com>,
	"'Kirill A. Shutemov'" <kirill.shutemov@...ux.intel.com>,
	"'Naoya Horiguchi'" <n-horiguchi@...jp.nec.com>,
	"'Michal Hocko'" <mhocko@...e.com>,
	"'Andrew Morton'" <akpm@...ux-foundation.org>
Subject: Re: [RFC PATCH 3/6] mm/userfaultfd: add __mcopy_atomic_hugetlb for
 huge page UFFDIO_COPY

On 06/06/2016 11:27 PM, Hillf Danton wrote:
>> @@ -182,6 +354,13 @@ retry:
>>  		goto out_unlock;
>>
>>  	/*
>> +	 * If this is a HUGETLB vma, pass off to appropriate routine
>> +	 */
>> +	if (dst_vma->vm_flags & VM_HUGETLB)
> 
> Use is_vm_hugetlb_page()?
> And in cases in subsequent patches?
> 
> Hillf

Yes, that would be better.  Thanks.

-- 
Mike Kravetz