linux-kernel - Re: [PATCH 1/4] mm: add new mmgrab() helper

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Message-ID: <a2215cbb-36dd-8cc5-9238-d3bca0170ef4@oracle.com>
Date:   Fri, 16 Dec 2016 11:20:40 +0100
From:   Vegard Nossum <vegard.nossum@...cle.com>
To:     "Kirill A. Shutemov" <kirill@...temov.name>,
        Peter Zijlstra <peterz@...radead.org>
Cc:     linux-mm@...ck.org, linux-kernel@...r.kernel.org,
        Rik van Riel <riel@...hat.com>,
        Matthew Wilcox <mawilcox@...rosoft.com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Michal Hocko <mhocko@...e.com>,
        Al Viro <viro@...iv.linux.org.uk>,
        Ingo Molnar <mingo@...nel.org>,
        Linus Torvalds <torvalds@...ux-foundation.org>
Subject: Re: [PATCH 1/4] mm: add new mmgrab() helper

On 12/16/2016 11:19 AM, Kirill A. Shutemov wrote:
> On Fri, Dec 16, 2016 at 10:56:24AM +0100, Peter Zijlstra wrote:
>> But I must say mmget() vs mmgrab() is a wee bit confusing.
>
> mm_count vs mm_users is not very clear too. :)
>

I was about to say, I'm not sure it's much better than mmput() vs
mmdrop() or mm_users vs mm_count either, although the way I rationalised
it was the 3 vs 4 letters:

mmget() -- mmgrab()
mmput() -- mmdrop()
   ^^^ 3      ^^^^ 4


Vegard