linux-kernel - Re: [PATCH 6/8] mm: don't include <linux/memremap.h> in <linux/mm.h>

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Date:   Thu, 10 Feb 2022 16:00:02 -0500
From:   Felix Kuehling <felix.kuehling@....com>
To:     Christoph Hellwig <hch@....de>, Alex Sierra <alex.sierra@....com>
Cc:     Andrew Morton <akpm@...ux-foundation.org>,
        Dan Williams <dan.j.williams@...el.com>,
        Alex Deucher <alexander.deucher@....com>,
        Christian König <christian.koenig@....com>,
        "Pan, Xinhui" <Xinhui.Pan@....com>,
        Ben Skeggs <bskeggs@...hat.com>,
        Karol Herbst <kherbst@...hat.com>,
        Lyude Paul <lyude@...hat.com>, Jason Gunthorpe <jgg@...pe.ca>,
        Alistair Popple <apopple@...dia.com>,
        Logan Gunthorpe <logang@...tatee.com>,
        Ralph Campbell <rcampbell@...dia.com>,
        linux-kernel@...r.kernel.org, amd-gfx@...ts.freedesktop.org,
        dri-devel@...ts.freedesktop.org, nouveau@...ts.freedesktop.org,
        nvdimm@...ts.linux.dev, linux-mm@...ck.org
Subject: Re: [PATCH 6/8] mm: don't include <linux/memremap.h> in <linux/mm.h>


Am 2022-02-09 um 12:48 schrieb Christoph Hellwig:
> On Mon, Feb 07, 2022 at 04:19:29PM -0500, Felix Kuehling wrote:
>> Am 2022-02-07 um 01:32 schrieb Christoph Hellwig:
>>> Move the check for the actual pgmap types that need the free at refcount
>>> one behavior into the out of line helper, and thus avoid the need to
>>> pull memremap.h into mm.h.
>>>
>>> Signed-off-by: Christoph Hellwig <hch@....de>
>> The amdkfd part looks good to me.
>>
>> It looks like this patch is not based on Alex Sierra's coherent memory
>> series. He added two new helpers is_device_coherent_page and
>> is_dev_private_or_coherent_page that would need to be moved along with
>> is_device_private_page and is_pci_p2pdma_page.
> FYI, here is a branch that contains a rebase of the coherent memory
> related patches on top of this series:
>
> http://git.infradead.org/users/hch/misc.git/shortlog/refs/heads/pgmap-refcount
>
> I don't have a good way to test this, but I'll at least let the build bot
> finish before sending it out (probably tomorrow).

Thank you for taking care of this rebase! Alex tested it on one of our 
coherent memory systems and it passed our tests.

I see you also included these rebased patches in your latest 27-patch 
series. I'll try to review the changes in more detail over the weekend.

Regards,
   Felix