linux-kernel - Re: [PATCH RFC 3/3] mm: use "GUP-fast" instead "fast GUP" in remaining comments

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Date: Wed, 27 Mar 2024 17:03:10 +0200
From: Mike Rapoport <rppt@...nel.org>
To: David Hildenbrand <david@...hat.com>
Cc: linux-kernel@...r.kernel.org, Andrew Morton <akpm@...ux-foundation.org>,
	Jason Gunthorpe <jgg@...dia.com>,
	John Hubbard <jhubbard@...dia.com>, Peter Xu <peterx@...hat.com>,
	linux-arm-kernel@...ts.infradead.org, loongarch@...ts.linux.dev,
	linux-mips@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org,
	linux-s390@...r.kernel.org, linux-sh@...r.kernel.org,
	linux-mm@...ck.org, linux-perf-users@...r.kernel.org,
	linux-fsdevel@...r.kernel.org, x86@...nel.org
Subject: Re: [PATCH RFC 3/3] mm: use "GUP-fast" instead "fast GUP" in
 remaining comments

On Wed, Mar 27, 2024 at 02:05:38PM +0100, David Hildenbrand wrote:
> Let's fixup the remaining comments to consistently call that thing
> "GUP-fast". With this change, we consistently call it "GUP-fast".
> 
> Signed-off-by: David Hildenbrand <david@...hat.com>

Reviewed-by: Mike Rapoport (IBM) <rppt@...nel.org>

> ---
>  mm/filemap.c    | 2 +-
>  mm/khugepaged.c | 2 +-
>  2 files changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/mm/filemap.c b/mm/filemap.c
> index 387b394754fa..c668e11cd6ef 100644
> --- a/mm/filemap.c
> +++ b/mm/filemap.c
> @@ -1810,7 +1810,7 @@ EXPORT_SYMBOL(page_cache_prev_miss);
>   * C. Return the page to the page allocator
>   *
>   * This means that any page may have its reference count temporarily
> - * increased by a speculative page cache (or fast GUP) lookup as it can
> + * increased by a speculative page cache (or GUP-fast) lookup as it can
>   * be allocated by another user before the RCU grace period expires.
>   * Because the refcount temporarily acquired here may end up being the
>   * last refcount on the page, any page allocation must be freeable by
> diff --git a/mm/khugepaged.c b/mm/khugepaged.c
> index 38830174608f..6972fa05132e 100644
> --- a/mm/khugepaged.c
> +++ b/mm/khugepaged.c
> @@ -1169,7 +1169,7 @@ static int collapse_huge_page(struct mm_struct *mm, unsigned long address,
>  	 * huge and small TLB entries for the same virtual address to
>  	 * avoid the risk of CPU bugs in that area.
>  	 *
> -	 * Parallel fast GUP is fine since fast GUP will back off when
> +	 * Parallel GUP-fast is fine since GUP-fast will back off when
>  	 * it detects PMD is changed.
>  	 */
>  	_pmd = pmdp_collapse_flush(vma, address, pmd);
> -- 
> 2.43.2
> 

-- 
Sincerely yours,
Mike.