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Date:   Mon, 17 Apr 2023 11:52:33 +0100
From:   Catalin Marinas <catalin.marinas@arm.com>
To:     Lorenzo Stoakes <lstoakes@gmail.com>
Cc:     linux-mm@kvack.org, linux-kernel@vger.kernel.org,
        Andrew Morton <akpm@linux-foundation.org>,
        Matthew Wilcox <willy@infradead.org>,
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        Kentaro Takeda <takedakn@nttdata.co.jp>,
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        James Morris <jmorris@namei.org>,
        "Serge E . Hallyn" <serge@hallyn.com>,
        Paolo Bonzini <pbonzini@redhat.com>
Subject: Re: [PATCH v3 3/7] mm/gup: remove vmas parameter from
 get_user_pages_remote()
Message-ID: <ZD0k8dMm+6E75Kzu@arm.com>
References: <cover.1681558407.git.lstoakes@gmail.com>
 <523f0764f4979276a6d4b89cbad9af9124e4bf0a.1681558407.git.lstoakes@gmail.com>
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On Sat, Apr 15, 2023 at 01:09:24PM +0100, Lorenzo Stoakes wrote:
> The only instances of get_user_pages_remote() invocations which used the
> vmas parameter were for a single page which can instead simply look up the
> VMA directly. In particular:-
> 
> - __update_ref_ctr() looked up the VMA but did nothing with it so we simply
>   remove it.
> 
> - __access_remote_vm() was already using vma_lookup() when the original
>   lookup failed so by doing the lookup directly this also de-duplicates the
>   code.
> 
> This forms part of a broader set of patches intended to eliminate the vmas
> parameter altogether.
> 
> Signed-off-by: Lorenzo Stoakes <lstoakes@gmail.com>
> ---
>  arch/arm64/kernel/mte.c   |  7 ++++---

For arm64:

Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>