# \[PATCH 3/6\] struct page: add field for vm\_struct

- From: Christopher Lameter \<hidden\>
- Date: 2018-02-05 15:33:15 
- List: linux-security-module
- Page: https://ratatoskr.run/linux-security-module/2018/02/5199664
- Thread: https://ratatoskr.run/linux-security-module/2018/01/5183216/t.md

```text
On Sat, 3 Feb 2018, Igor Stoppa wrote:

> - the property of the compound page will affect the property of all the
> pages in the compound, so when one is write protected, it can generate a
> lot of wasted memory, if there is too much slack (because of the order)
> With vmalloc, I can allocate any number of pages, minimizing the waste.

I thought the intend here is to create a pool where the whole pool becomes
RO?
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```