From: David Rientjes <rientjes@google.com>
To: Su Hui <sh_def@163.com>
Cc: akpm@linux-foundation.org, linux-kernel@vger.kernel.org,
linux-mm@kvack.org
Subject: Re: [PATCH] mm: remove the redundancy code
Date: Mon, 29 Jun 2020 11:50:15 -0700 (PDT) [thread overview]
Message-ID: <alpine.DEB.2.22.394.2006291149040.1030250@chino.kir.corp.google.com> (raw)
In-Reply-To: <20200629173047.GA38128@ubuntu>
On Tue, 30 Jun 2020, Su Hui wrote:
> remove the redundancy code, the zone_start_pfn
> is assigned from zone->zone_start_pfn
> Signed-off-by: Su Hui <sh_def@163.com>
I don't think this is redundant, it's used by memory hotplug when onlining
new memory.
> ---
> mm/page_alloc.c | 2 --
> 1 file changed, 2 deletions(-)
>
> diff --git a/mm/page_alloc.c b/mm/page_alloc.c
> index 3c4eb750a199..3372a8c9fbc4 100644
> --- a/mm/page_alloc.c
> +++ b/mm/page_alloc.c
> @@ -6215,8 +6215,6 @@ void __meminit init_currently_empty_zone(struct zone *zone,
> if (zone_idx > pgdat->nr_zones)
> pgdat->nr_zones = zone_idx;
>
> - zone->zone_start_pfn = zone_start_pfn;
> -
> mminit_dprintk(MMINIT_TRACE, "memmap_init",
> "Initialising map node %d zone %lu pfns %lu -> %lu\n",
> pgdat->node_id,
next prev parent reply other threads:[~2020-06-29 18:50 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-06-29 17:30 Su Hui
2020-06-29 18:50 ` David Rientjes [this message]
2020-06-29 20:24 ` Mike Rapoport
2020-06-30 2:02 ` 苏辉
2020-06-30 2:06 ` David Rientjes
2020-06-30 10:28 ` kernel test robot
2020-06-30 11:52 ` kernel test robot
2020-06-30 12:39 ` David Hildenbrand
2020-06-30 13:49 ` 苏辉
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