linux-kernel - Re: [PATCH] mm: use PAGE_ALIGNED instead of IS

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Date:   Fri, 27 May 2022 09:48:00 +0800
From:   Miaohe Lin <linmiaohe@...wei.com>
To:     <bh1scw@...il.com>
CC:     <linux-mm@...ck.org>, <linux-kernel@...r.kernel.org>,
        Muchun Song <songmuchun@...edance.com>,
        Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: [PATCH] mm: use PAGE_ALIGNED instead of IS_ALIGNED

On 2022/5/26 22:02, bh1scw@...il.com wrote:
> From: Fanjun Kong <bh1scw@...il.com>
> 
> The <linux/mm.h> already provides the PAGE_ALIGNED macro. Let's
> use this macro instead of IS_ALIGNED and passing PAGE_SIZE directly.
> 
> Signed-off-by: Fanjun Kong <bh1scw@...il.com>

Reviewed-by: Miaohe Lin <linmiaohe@...wei.com>

Thanks!

> ---
>  mm/sparse-vmemmap.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/mm/sparse-vmemmap.c b/mm/sparse-vmemmap.c
> index f4fa61dbbee3..49cb15cbe590 100644
> --- a/mm/sparse-vmemmap.c
> +++ b/mm/sparse-vmemmap.c
> @@ -200,8 +200,8 @@ static int vmemmap_remap_range(unsigned long start, unsigned long end,
>  	unsigned long next;
>  	pgd_t *pgd;
>  
> -	VM_BUG_ON(!IS_ALIGNED(start, PAGE_SIZE));
> -	VM_BUG_ON(!IS_ALIGNED(end, PAGE_SIZE));
> +	VM_BUG_ON(!PAGE_ALIGNED(start));
> +	VM_BUG_ON(!PAGE_ALIGNED(end));
>  
>  	pgd = pgd_offset_k(addr);
>  	do {
>