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From:   Daniel Axtens <dja@axtens.net>
To:     Andrew Morton <akpm@linux-foundation.org>
Cc:     kasan-dev@googlegroups.com, linux-mm@kvack.org,
        aryabinin@virtuozzo.com, glider@google.com,
        linux-kernel@vger.kernel.org, dvyukov@google.com,
        daniel@iogearbox.net, cai@lca.pw
Subject: Re: [PATCH 1/3] mm: add apply_to_existing_pages helper
In-Reply-To: <20191206163853.cdeb5dc80a8622fb6323a8d2@linux-foundation.org>
References: <20191205140407.1874-1-dja@axtens.net> <20191206163853.cdeb5dc80a8622fb6323a8d2@linux-foundation.org>
Date:   Sat, 07 Dec 2019 13:16:02 +1100
Message-ID: <87r21gdgnx.fsf@dja-thinkpad.axtens.net>
MIME-Version: 1.0
Content-Type: text/plain
Sender: linux-kernel-owner@vger.kernel.org
Precedence: bulk

>
> Wouldn't apply_to_existing_page_range() be a better name?

I agree with both of those fixups, thanks!

Regards,
Daniel

>
> --- a/include/linux/mm.h~mm-add-apply_to_existing_pages-helper-fix-fix
> +++ a/include/linux/mm.h
> @@ -2621,9 +2621,9 @@ static inline int vm_fault_to_errno(vm_f
>  typedef int (*pte_fn_t)(pte_t *pte, unsigned long addr, void *data);
>  extern int apply_to_page_range(struct mm_struct *mm, unsigned long address,
>  			       unsigned long size, pte_fn_t fn, void *data);
> -extern int apply_to_existing_pages(struct mm_struct *mm, unsigned long address,
> -				   unsigned long size, pte_fn_t fn,
> -				   void *data);
> +extern int apply_to_existing_page_range(struct mm_struct *mm,
> +				   unsigned long address, unsigned long size,
> +				   pte_fn_t fn, void *data);
>  
>  #ifdef CONFIG_PAGE_POISONING
>  extern bool page_poisoning_enabled(void);
> --- a/mm/memory.c~mm-add-apply_to_existing_pages-helper-fix-fix
> +++ a/mm/memory.c
> @@ -2184,12 +2184,12 @@ EXPORT_SYMBOL_GPL(apply_to_page_range);
>   * Unlike apply_to_page_range, this does _not_ fill in page tables
>   * where they are absent.
>   */
> -int apply_to_existing_pages(struct mm_struct *mm, unsigned long addr,
> -			    unsigned long size, pte_fn_t fn, void *data)
> +int apply_to_existing_page_range(struct mm_struct *mm, unsigned long addr,
> +				 unsigned long size, pte_fn_t fn, void *data)
>  {
>  	return __apply_to_page_range(mm, addr, size, fn, data, false);
>  }
> -EXPORT_SYMBOL_GPL(apply_to_existing_pages);
> +EXPORT_SYMBOL_GPL(apply_to_existing_page_range);
>  
>  /*
>   * handle_pte_fault chooses page fault handler according to an entry which was
> _