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Date:   Tue, 8 Jan 2019 21:38:12 -0500
From:   Andrea Arcangeli <aarcange@redhat.com>
To:     "Aneesh Kumar K.V" <aneesh.kumar@linux.ibm.com>
Cc:     akpm@linux-foundation.org, Michal Hocko <mhocko@kernel.org>,
        Alexey Kardashevskiy <aik@ozlabs.ru>,
        David Gibson <david@gibson.dropbear.id.au>, mpe@ellerman.id.au,
        linux-mm@kvack.org, linux-kernel@vger.kernel.org,
        linuxppc-dev@lists.ozlabs.org
Subject: Re: [PATCH V6 1/4] mm/cma: Add PF flag to force non cma alloc
Message-ID: <20190109023812.GF20586@redhat.com>
References: <20190108045110.28597-1-aneesh.kumar@linux.ibm.com>
 <20190108045110.28597-2-aneesh.kumar@linux.ibm.com>
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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 <aarcange@redhat.com>
> Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com>

Reviewed-by: Andrea Arcangeli <aarcange@redhat.com>