linux-kernel - Re: [PATCH 2/3] mm/slub: wrap cpu_slab->partial in CONFIG_SLUB_CPU

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Message-ID: <20170501151526.GA1110@WeideMacBook-Pro.local>
Date:   Mon, 1 May 2017 23:15:26 +0800
From:   Wei Yang <richard.weiyang@...il.com>
To:     Matthew Wilcox <willy@...radead.org>
Cc:     Wei Yang <richard.weiyang@...il.com>, cl@...ux.com,
        penberg@...nel.org, rientjes@...gle.com, iamjoonsoo.kim@....com,
        akpm@...ux-foundation.org, linux-mm@...ck.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/3] mm/slub: wrap cpu_slab->partial in
 CONFIG_SLUB_CPU_PARTIAL

On Mon, May 01, 2017 at 07:39:30AM -0700, Matthew Wilcox wrote:
>On Mon, May 01, 2017 at 04:20:05PM +0800, Wei Yang wrote:
>> I have tried to replace the code with slub_cpu_partial(), it works fine on
>> most of cases except two:
>> 
>> 1. slub_cpu_partial(c) = page->next;
>
>New accessor: slub_set_cpu_partial(c, p)
>
>> 2. page = READ_ONCE(slub_cpu_partial(c));
>
>OK, that one I haven't seen an existing pattern for yet.
>slub_cpu_partial_read_once(c)?

Thanks~ You are really a genius.

-- 
Wei Yang
Help you, Help me

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