linux-kernel - Re: [PATCH v2 1/7] userfaultfd: move core VMA manipulation logic to mm/userfaultfd.c

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Message-ID: <4v3i2dkez33twngywzvosnc3vwlgxynktqceno3izup4mp46hd@nf6ebzbddnwx>
Date: Tue, 9 Jul 2024 09:07:36 -0400
From: "Liam R. Howlett" <Liam.Howlett@...cle.com>
To: Lorenzo Stoakes <lorenzo.stoakes@...cle.com>
Cc: Andrew Morton <akpm@...ux-foundation.org>, linux-fsdevel@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-mm@...ck.org,
        Vlastimil Babka <vbabka@...e.cz>, Matthew Wilcox <willy@...radead.org>,
        Alexander Viro <viro@...iv.linux.org.uk>,
        Christian Brauner <brauner@...nel.org>, Jan Kara <jack@...e.cz>,
        Eric Biederman <ebiederm@...ssion.com>, Kees Cook <kees@...nel.org>,
        Suren Baghdasaryan <surenb@...gle.com>, SeongJae Park <sj@...nel.org>,
        Shuah Khan <shuah@...nel.org>,
        Brendan Higgins <brendanhiggins@...gle.com>,
        David Gow <davidgow@...gle.com>, Rae Moar <rmoar@...gle.com>
Subject: Re: [PATCH v2 1/7] userfaultfd: move core VMA manipulation logic to
 mm/userfaultfd.c

* Lorenzo Stoakes <lorenzo.stoakes@...cle.com> [240704 15:28]:
> This patch forms part of a patch series intending to separate out VMA logic
> and render it testable from userspace, which requires that core
> manipulation functions be exposed in an mm/-internal header file.
> 
> In order to do this, we must abstract APIs we wish to test, in this
> instance functions which ultimately invoke vma_modify().
> 
> This patch therefore moves all logic which ultimately invokes vma_modify()
> to mm/userfaultfd.c, trying to transfer code at a functional granularity
> where possible.
> 
> Signed-off-by: Lorenzo Stoakes <lorenzo.stoakes@...cle.com>

Reviewed-by: Liam R. Howlett <Liam.Howlett@...cle.com>