linux-kernel - Re: [PATCH v2 4/4] mm: lock slub page when listing objects

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Date:   Thu, 12 Sep 2019 15:12:26 -0600
From:   Yu Zhao <yuzhao@...gle.com>
To:     "Kirill A. Shutemov" <kirill@...temov.name>
Cc:     Christoph Lameter <cl@...ux.com>,
        Pekka Enberg <penberg@...nel.org>,
        David Rientjes <rientjes@...gle.com>,
        Joonsoo Kim <iamjoonsoo.kim@....com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Tetsuo Handa <penguin-kernel@...ove.sakura.ne.jp>,
        linux-mm@...ck.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 4/4] mm: lock slub page when listing objects

On Thu, Sep 12, 2019 at 01:06:42PM +0300, Kirill A. Shutemov wrote:
> On Wed, Sep 11, 2019 at 08:31:11PM -0600, Yu Zhao wrote:
> > Though I have no idea what the side effect of such race would be,
> > apparently we want to prevent the free list from being changed
> > while debugging the objects.
> 
> Codewise looks good to me. But commit message can be better.
> 
> Can we repharase it to indicate that slab_lock is required to protect
> page->objects?

Will do.