linux-kernel - Re: [PATCH resend] mm/page_alloc: fix comment is __get_free

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Message-Id: <efd101d8-04af-9f6c-d0fa-8bde784b103c@linux.vnet.ibm.com>
Date:   Mon, 27 Nov 2017 11:52:15 +0530
From:   Anshuman Khandual <khandual@...ux.vnet.ibm.com>
To:     JianKang Chen <chenjiankang1@...wei.com>,
        akpm@...ux-foundation.org, mhocko@...e.com,
        mgorman@...hsingularity.net, hillf.zj@...baba-inc.com
Cc:     hannes@...xchg.org, linux-mm@...ck.org,
        linux-kernel@...r.kernel.org, xieyisheng1@...wei.com,
        guohanjun@...wei.com, wangkefeng.wang@...wei.com
Subject: Re: [PATCH resend] mm/page_alloc: fix comment is __get_free_pages

On 11/25/2017 12:50 PM, JianKang Chen wrote:
> From: Jiankang Chen <chenjiankang1@...wei.com>
> 
> __get_free_pages will return an 64bit address in 64bit System
> like arm64 or x86_64. And this comment really confuse new bigenner of
> mm.

Normally its not 64 bit virtual address though CPU architecture supports
64 bits. But yes, specifying it as general virtual address without number
of bits is better.