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SubjectRe: [PATCH v20 04/20] mm/thp: use head for head page in lru_add_page_tail
On Thu, Oct 29, 2020 at 06:44:49PM +0800, Alex Shi wrote:
> Since the first parameter is only used by head page, it's better to make
> it explicit.
>
> Signed-off-by: Alex Shi <alex.shi@linux.alibaba.com>
> Reviewed-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
> Acked-by: Hugh Dickins <hughd@google.com>
> Cc: Andrew Morton <akpm@linux-foundation.org>
> Cc: Johannes Weiner <hannes@cmpxchg.org>
> Cc: Matthew Wilcox <willy@infradead.org>
> Cc: Hugh Dickins <hughd@google.com>
> Cc: linux-mm@kvack.org
> Cc: linux-kernel@vger.kernel.org
> ---
> mm/huge_memory.c | 12 ++++++------
> 1 file changed, 6 insertions(+), 6 deletions(-)
>
> diff --git a/mm/huge_memory.c b/mm/huge_memory.c
> index 038db815ebba..93c0b73eb8c6 100644
> --- a/mm/huge_memory.c
> +++ b/mm/huge_memory.c
> @@ -2346,19 +2346,19 @@ static void remap_page(struct page *page, unsigned int nr)
> }
> }
>
> -static void lru_add_page_tail(struct page *page, struct page *page_tail,
> +static void lru_add_page_tail(struct page *head, struct page *page_tail,

It may be better to pick either
head and tail
or
page_head and page_tail

?

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