linux-kernel - Re: [RFC 0/2] guarantee natural alignment for kmalloc()

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Message-ID: <01000169a68852ed-d621a35c-af0c-4759-a8a3-e97e7dfc17a5-000000@email.amazonses.com>
Date:   Fri, 22 Mar 2019 17:52:25 +0000
From:   Christopher Lameter <cl@...ux.com>
To:     Vlastimil Babka <vbabka@...e.cz>
cc:     linux-mm@...ck.org, Pekka Enberg <penberg@...nel.org>,
        David Rientjes <rientjes@...gle.com>,
        Joonsoo Kim <iamjoonsoo.kim@....com>,
        Ming Lei <ming.lei@...hat.com>,
        Dave Chinner <david@...morbit.com>,
        Matthew Wilcox <willy@...radead.org>,
        "Darrick J . Wong" <darrick.wong@...cle.com>,
        Christoph Hellwig <hch@....de>,
        Michal Hocko <mhocko@...nel.org>, linux-kernel@...r.kernel.org,
        linux-xfs@...r.kernel.org, linux-fsdevel@...r.kernel.org,
        linux-block@...r.kernel.org
Subject: Re: [RFC 0/2] guarantee natural alignment for kmalloc()

On Thu, 21 Mar 2019, Vlastimil Babka wrote:

> That however doesn't work well for the xfs/IO case where block sizes are
> not known in advance:
>
> https://lore.kernel.org/linux-fsdevel/20190225040904.5557-1-ming.lei@redhat.com/T/#ec3a292c358d05a6b29cc4a9ce3ae6b2faf31a23f

I thought we agreed to use custom slab caches for that?