linux-kernel - Re: [PATCH] mm: remove the __mmu_notifier_invalidate_range

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Date:   Wed, 28 Aug 2019 14:40:25 +0000
From:   Jason Gunthorpe <jgg@...lanox.com>
To:     Christoph Hellwig <hch@....de>
CC:     "akpm@...ux-foundation.org" <akpm@...ux-foundation.org>,
        "linux-mm@...ck.org" <linux-mm@...ck.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "daniel@...ll.ch" <daniel@...ll.ch>
Subject: Re: [PATCH] mm: remove the __mmu_notifier_invalidate_range_start/end
 exports

On Wed, Aug 28, 2019 at 04:21:09PM +0200, Christoph Hellwig wrote:
> Bo modular code uses these, which makes a lot of sense given the
> wrappers around them are only called by core mm code.

/Bo/No/

> Also remove the recently added __mmu_notifier_invalidate_range_start_map
> export for which the same applies.
> 
> Signed-off-by: Christoph Hellwig <hch@....de>
>  mm/mmu_notifier.c | 3 ---
>  1 file changed, 3 deletions(-)
> 
> diff --git a/mm/mmu_notifier.c b/mm/mmu_notifier.c
> index 690f1ea639d5..240f4e14d42e 100644
> +++ b/mm/mmu_notifier.c
> @@ -25,7 +25,6 @@ DEFINE_STATIC_SRCU(srcu);
>  struct lockdep_map __mmu_notifier_invalidate_range_start_map = {
>  	.name = "mmu_notifier_invalidate_range_start"
>  };
> -EXPORT_SYMBOL_GPL(__mmu_notifier_invalidate_range_start_map);
>  #endif

I inlined this hunk into Daniel's patch from yesterday

Reviewed-by: Jason Gunthorpe <jgg@...lanox.com>

Applied to hmm.git..

What about:

EXPORT_SYMBOL_GPL(__mmu_notifier_invalidate_range);

elixir suggest this is not called outside mm/ either?

Jason