Date: Tue, 13 Mar 2018 15:00:40 -0700 From: Matthew Wilcox <willy@...radead.org> To: Igor Stoppa <igor.stoppa@...wei.com> Cc: david@...morbit.com, rppt@...ux.vnet.ibm.com, keescook@...omium.org, mhocko@...nel.org, labbott@...hat.com, linux-security-module@...r.kernel.org, linux-mm@...ck.org, linux-kernel@...r.kernel.org, kernel-hardening@...ts.openwall.com 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 <igor.stoppa@...wei.com> Reviewed-by: Matthew Wilcox <mawilcox@...rosoft.com> Regardless of the fate of the rest of this patchset, this makes sense and we should have this.
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