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Date: Tue, 13 Mar 2018 15:00:40 -0700
From: Matthew Wilcox <>
To: Igor Stoppa <>
Subject: Re: [PATCH 4/8] struct page: add field for vm_struct

On Tue, Mar 13, 2018 at 11:45:50PM +0200, Igor Stoppa wrote:
> When a page is used for virtual memory, it is often necessary to obtain
> a handler to the corresponding vm_struct, which refers to the virtually
> continuous area generated when invoking vmalloc.
> The struct page has a "mapping" field, which can be re-used, to store a
> pointer to the parent area.
> This will avoid more expensive searches, later on.
> Signed-off-by: Igor Stoppa <>

Reviewed-by: Matthew Wilcox <>

Regardless of the fate of the rest of this patchset, this makes sense
and we should have this.

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