linux-ext4 - Re: [PATCH v6 07/13] mm: add generic type support to migrate

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Message-ID: <20210815091935.GD25067@lst.de>
Date:   Sun, 15 Aug 2021 11:19:35 +0200
From:   Christoph Hellwig <hch@....de>
To:     Alex Sierra <alex.sierra@....com>
Cc:     akpm@...ux-foundation.org, Felix.Kuehling@....com,
        linux-mm@...ck.org, rcampbell@...dia.com,
        linux-ext4@...r.kernel.org, linux-xfs@...r.kernel.org,
        amd-gfx@...ts.freedesktop.org, dri-devel@...ts.freedesktop.org,
        hch@....de, jgg@...dia.com, jglisse@...hat.com
Subject: Re: [PATCH v6 07/13] mm: add generic type support to migrate_vma
 helpers

On Fri, Aug 13, 2021 at 01:31:44AM -0500, Alex Sierra wrote:
> Device generic type case added for migrate_vma_pages and
> migrate_vma_check_page helpers.
> Both, generic and private device types have the same
> conditions to decide to migrate pages from/to device
> memory.

This reas a little weird mostly because it doesn't use up the line
length nicely:

Add the device generic type case to the migrate_vma_pages and
migrate_vma_check_page helpers.  This new case is handled identically
to the existing device private case.

> +			 * We support migrating to private and generic types for device
> +			 * zone memory.

Don't spill comments over 80 characters.

Otherwise looks good:

Reviewed-by: Christoph Hellwig <hch@....de>