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Date:   Wed, 8 Apr 2020 15:27:13 +0200
From:   Greg KH <greg@kroah.com>
To:     Christoph Hellwig <hch@lst.de>
Cc:     Andrew Morton <akpm@linux-foundation.org>,
        "K. Y. Srinivasan" <kys@microsoft.com>,
        Haiyang Zhang <haiyangz@microsoft.com>,
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Subject: Re: [PATCH 02/28] staging: android: ion: use vmap instead of
 vm_map_ram
Message-ID: <20200408132713.GA1248058@kroah.com>
References: <20200408115926.1467567-1-hch@lst.de>
 <20200408115926.1467567-3-hch@lst.de>
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On Wed, Apr 08, 2020 at 01:59:00PM +0200, Christoph Hellwig wrote:
> vm_map_ram can keep mappings around after the vm_unmap_ram.  Using that
> with non-PAGE_KERNEL mappings can lead to all kinds of aliasing issues.
> 
> Signed-off-by: Christoph Hellwig <hch@lst.de>

Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>