From: Ingo Molnar <mingo@kernel.org>
To: Xishi Qiu <qiuxishi@huawei.com>
Cc: Andrew Morton <akpm@linux-foundation.org>,
dave@sr71.net, Rik van Riel <riel@redhat.com>,
"H. Peter Anvin" <hpa@zytor.com>,
Thomas Gleixner <tglx@linutronix.de>,
linux-tip-commits@vger.kernel.org,
LKML <linux-kernel@vger.kernel.org>,
Linux MM <linux-mm@kvack.org>
Subject: Re: [PATCH V3 2/2] x86/mm: use min instead of min_t
Date: Wed, 10 Dec 2014 07:54:57 +0100 [thread overview]
Message-ID: <20141210065457.GA20596@gmail.com> (raw)
In-Reply-To: <5487AB3F.7050807@huawei.com>
* Xishi Qiu <qiuxishi@huawei.com> wrote:
> The type of "MAX_DMA_PFN" and "xXx_pfn" are both unsigned long now, so use
> min() instead of min_t().
>
> Signed-off-by: Xishi Qiu <qiuxishi@huawei.com>
> Suggested-by: Andrew Morton <akpm@linux-foundation.org>
> ---
> arch/x86/kernel/e820.c | 4 ++--
> 1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/arch/x86/kernel/e820.c b/arch/x86/kernel/e820.c
> index 49f8864..dd2f07a 100644
> --- a/arch/x86/kernel/e820.c
> +++ b/arch/x86/kernel/e820.c
> @@ -1114,8 +1114,8 @@ void __init memblock_find_dma_reserve(void)
> * at first, and assume boot_mem will not take below MAX_DMA_PFN
> */
> for_each_mem_pfn_range(i, MAX_NUMNODES, &start_pfn, &end_pfn, NULL) {
> - start_pfn = min_t(unsigned long, start_pfn, MAX_DMA_PFN);
> - end_pfn = min_t(unsigned long, end_pfn, MAX_DMA_PFN);
> + start_pfn = min(start_pfn, MAX_DMA_PFN);
> + end_pfn = min(end_pfn, MAX_DMA_PFN);
> nr_pages += end_pfn - start_pfn;
Yes, harmonizing the types is a much nicer solution, it allows
cleanups like this.
Thanks,
Ingo
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next prev parent reply other threads:[~2014-12-10 6:55 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-12-10 2:09 Xishi Qiu
2014-12-10 6:54 ` Ingo Molnar [this message]
2014-12-11 12:26 ` [tip:x86/urgent] x86/mm: Use min() instead of min_t() in the e820 printout code tip-bot for Xishi Qiu
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