linux-kernel - Re: [PATCH 2/3] mm/mmu_notifier: use structure for invalidate_range

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Date:   Mon, 3 Dec 2018 19:09:12 -0500
From:   Jerome Glisse <jglisse@...hat.com>
To:     Andrew Morton <akpm@...ux-foundation.org>, linux-mm@...ck.org
Cc:     linux-kernel@...r.kernel.org,
        Matthew Wilcox <mawilcox@...rosoft.com>,
        Ross Zwisler <zwisler@...nel.org>, Jan Kara <jack@...e.cz>,
        Dan Williams <dan.j.williams@...el.com>,
        Paolo Bonzini <pbonzini@...hat.com>,
        Radim Krčmář <rkrcmar@...hat.com>,
        Michal Hocko <mhocko@...nel.org>,
        Christian Koenig <christian.koenig@....com>,
        Felix Kuehling <felix.kuehling@....com>,
        Ralph Campbell <rcampbell@...dia.com>,
        John Hubbard <jhubbard@...dia.com>, kvm@...r.kernel.org,
        dri-devel@...ts.freedesktop.org, linux-rdma@...r.kernel.org,
        linux-fsdevel@...r.kernel.org
Subject: Re: [PATCH 2/3] mm/mmu_notifier: use structure for
 invalidate_range_start/end calls

On Mon, Dec 03, 2018 at 03:18:16PM -0500, jglisse@...hat.com wrote:
> diff --git a/mm/migrate.c b/mm/migrate.c
> index f7e4bfdc13b7..4896dd9d8b28 100644
> --- a/mm/migrate.c
> +++ b/mm/migrate.c
> @@ -2303,8 +2303,13 @@ static int migrate_vma_collect_pmd(pmd_t *pmdp,
>   */
>  static void migrate_vma_collect(struct migrate_vma *migrate)
>  {
> +	struct mmu_notifier_range range;
>  	struct mm_walk mm_walk;
>  
> +	range.start = migrate->start;
> +	range.end = migrate->end;
> +	range.mm = mm_walk.mm;

Andrew can you replace above line by:

+	range.mm = migrate->vma->vm_mm;

I made a mistake here when i was rebasing before posting. I checked
the patchset again and i believe this is the only mistake i made.

Do you want me to repost ?

Sorry for my stupid mistake.

Cheers,
Jérôme