linux-kernel - Re: [PATCH] mm: export cma alloc and release

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Message-ID: <20191005083753.GA14691@lst.de>
Date:   Sat, 5 Oct 2019 10:37:53 +0200
From:   Christoph Hellwig <hch@....de>
To:     Catalin Marinas <catalin.marinas@....com>
Cc:     Mark Salyzyn <salyzyn@...roid.com>, linux-kernel@...r.kernel.org,
        kernel-team@...roid.com, Andrew Morton <akpm@...ux-foundation.org>,
        Yue Hu <huyue2@...ong.com>, Mike Rapoport <rppt@...ux.ibm.com>,
        Will Deacon <will@...nel.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Ryohei Suzuki <ryh.szk.cmnty@...il.com>,
        Doug Berger <opendmb@...il.com>,
        Andrey Konovalov <andreyknvl@...gle.com>,
        Peng Fan <peng.fan@....com>, linux-mm@...ck.org,
        Christoph Hellwig <hch@....de>,
        Robin Murphy <robin.murphy@....com>
Subject: Re: [PATCH] mm: export cma alloc and release

On Thu, Oct 03, 2019 at 09:55:28AM +0100, Catalin Marinas wrote:
> Aren't drivers supposed to use the DMA API for such allocations rather
> than invoking cma_*() directly?

Yes, they are.