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From: Andrew Morton <akpm@linux-foundation.org>
To: Yang Shi <yang.shi@linaro.org>
Cc: linux-kernel@vger.kernel.org, linux-mm@kvack.org,
	linaro-kernel@lists.linaro.org
Subject: Re: [PATCH] mm: use early_pfn_to_nid in register_page_bootmem_info_node
Date: Wed, 25 May 2016 15:23:19 -0700	[thread overview]
Message-ID: <20160525152319.fa87b4cc0b8326fef89a1b92@linux-foundation.org> (raw)
In-Reply-To: <1464210007-30930-1-git-send-email-yang.shi@linaro.org>

On Wed, 25 May 2016 14:00:07 -0700 Yang Shi <yang.shi@linaro.org> wrote:

> register_page_bootmem_info_node() is invoked in mem_init(), so it will be
> called before page_alloc_init_late() if CONFIG_DEFERRED_STRUCT_PAGE_INIT
> is enabled. But, pfn_to_nid() depends on memmap which won't be fully setup
> until page_alloc_init_late() is done, so replace pfn_to_nid() by
> early_pfn_to_nid().

What are the runtime effects of this fix?

WARNING: multiple messages have this Message-ID (diff)
From: Andrew Morton <akpm@linux-foundation.org>
To: Yang Shi <yang.shi@linaro.org>
Cc: linux-kernel@vger.kernel.org, linux-mm@kvack.org,
	linaro-kernel@lists.linaro.org
Subject: Re: [PATCH] mm: use early_pfn_to_nid in register_page_bootmem_info_node
Date: Wed, 25 May 2016 15:23:19 -0700	[thread overview]
Message-ID: <20160525152319.fa87b4cc0b8326fef89a1b92@linux-foundation.org> (raw)
In-Reply-To: <1464210007-30930-1-git-send-email-yang.shi@linaro.org>

On Wed, 25 May 2016 14:00:07 -0700 Yang Shi <yang.shi@linaro.org> wrote:

> register_page_bootmem_info_node() is invoked in mem_init(), so it will be
> called before page_alloc_init_late() if CONFIG_DEFERRED_STRUCT_PAGE_INIT
> is enabled. But, pfn_to_nid() depends on memmap which won't be fully setup
> until page_alloc_init_late() is done, so replace pfn_to_nid() by
> early_pfn_to_nid().

What are the runtime effects of this fix?


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  reply	other threads:[~2016-05-25 22:23 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-05-25 21:00 [PATCH] mm: use early_pfn_to_nid in register_page_bootmem_info_node Yang Shi
2016-05-25 21:00 ` Yang Shi
2016-05-25 22:23 ` Andrew Morton [this message]
2016-05-25 22:23   ` Andrew Morton
2016-05-25 22:36   ` Shi, Yang
2016-05-25 22:36     ` Shi, Yang
2016-05-26  0:37     ` Joonsoo Kim
2016-05-26  0:37       ` Joonsoo Kim

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