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Date:   Tue, 8 Jan 2019 21:38:12 -0500
From:   Andrea Arcangeli <>
To:     "Aneesh Kumar K.V" <>
Cc:, Michal Hocko <>,
        Alexey Kardashevskiy <>,
        David Gibson <>,,,,
Subject: Re: [PATCH V6 1/4] mm/cma: Add PF flag to force non cma alloc

On Tue, Jan 08, 2019 at 10:21:07AM +0530, Aneesh Kumar K.V wrote:
> This patch add PF_MEMALLOC_NOCMA which make sure any allocation in that context
> is marked non movable and hence cannot be satisfied by CMA region.
> This is useful with get_user_pages_cma_migrate where we take a page pin by
> migrating pages from CMA region. Marking the section PF_MEMALLOC_NOCMA ensures
> that we avoid uncessary page migration later.
> Suggested-by: Andrea Arcangeli <>
> Signed-off-by: Aneesh Kumar K.V <>

Reviewed-by: Andrea Arcangeli <>

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