From: Jiang Liu <liuj97@gmail.com>
To: Simon Jeons <simon.jeons@gmail.com>
Cc: Jiang Liu <jiang.liu@huawei.com>,
"linux-mm@kvack.org >> Linux Memory Management List"
<linux-mm@kvack.org>
Subject: Re: mm: introduce new field "managed_pages" to struct zone
Date: Sun, 03 Mar 2013 23:43:48 +0800 [thread overview]
Message-ID: <51336FB4.9000202@gmail.com> (raw)
In-Reply-To: <512EF580.6000608@gmail.com>
Hi Simon,
Bootmem allocator is used to managed DMA and Normal memory only, and it does not manage highmem pages because kernel
can't directly access highmem pages.
Regards!
Gerry
On 02/28/2013 02:13 PM, Simon Jeons wrote:
> Hi Jiang,
>
> https://patchwork.kernel.org/patch/1781291/
>
> You said that the bootmem allocator doesn't touch *highmem pages*, so highmem zones' managed_pages is set to the accurate value "spanned_pages - absent_pages" in function free_area_init_core() and won't be updated anymore. Why it doesn't touch *highmem pages*? Could you point out where you figure out this?
>
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next prev parent reply other threads:[~2013-03-03 15:43 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-02-28 6:13 mm: introduce new field "managed_pages" to struct zone Simon Jeons
2013-03-03 5:01 ` Ric Mason
2013-03-03 17:13 ` Jiang Liu
2013-03-03 15:43 ` Jiang Liu [this message]
2013-03-03 23:57 ` Simon Jeons
2013-03-04 16:37 ` Jiang Liu
2013-03-05 12:19 ` Simon Jeons
2013-03-05 15:08 ` Jiang Liu
2013-03-06 0:21 ` Simon Jeons
2013-03-08 2:14 ` Simon Jeons
2013-03-08 3:11 ` Jiang Liu
2013-03-05 12:21 ` Simon Jeons
2013-03-05 15:03 ` Jiang Liu
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