From: Fengguang Wu <fengguang.wu@intel.com>
To: Jaegeuk Hanse <jaegeuk.hanse@gmail.com>
Cc: metin d <metdos@yahoo.com>, Jan Kara <jack@suse.cz>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"linux-mm@kvack.org" <linux-mm@kvack.org>
Subject: Re: Problem in Page Cache Replacement
Date: Fri, 23 Nov 2012 10:25:57 +0800 [thread overview]
Message-ID: <20121123022557.GA3954@localhost> (raw)
In-Reply-To: <50AED214.4000701@gmail.com>
Jaegeuk,
> Thanks for your response. But which kind of pages are in the special
> reserved and which are all-flags-cleared?
The all-flags-cleared pages are mostly free pages in the buddy system.
The pages with flag "buddy" are also free pages: the buddy system only
marks the head pages of each order-2 free range with flag "buddy".
The reserved pages come from many sources, they may be set for memory
reserved for BIOS, memory holes, offlined memory, or used by some
device drivers.
Thanks,
Fengguang
next prev parent reply other threads:[~2012-11-23 2:26 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-11-20 17:42 Problem in Page Cache Replacement metin d
2012-11-20 18:25 ` Jan Kara
2012-11-21 8:03 ` metin d
2012-11-21 8:13 ` metin d
2012-11-21 8:34 ` Jaegeuk Hanse
2012-11-21 9:02 ` Fengguang Wu
2012-11-21 9:10 ` Fengguang Wu
2012-11-21 9:42 ` Jaegeuk Hanse
2012-11-21 10:00 ` metin d
[not found] ` <1353491880.11679.YahooMailNeo@web141102.mail.bf1.yahoo.com>
[not found] ` <50ACA634.5000007@gmail.com>
2012-11-21 10:07 ` Metin Döşlü
2012-11-22 15:41 ` Fengguang Wu
2012-11-22 15:53 ` Fengguang Wu
2012-11-23 2:10 ` Jaegeuk Hanse
2012-11-25 20:08 ` Rik van Riel
2012-11-24 15:06 ` Metin Döşlü
2012-11-22 15:26 ` Fengguang Wu
2012-11-23 1:32 ` Jaegeuk Hanse
2012-11-23 2:25 ` Fengguang Wu [this message]
2012-11-21 21:34 ` Johannes Weiner
2012-11-21 22:01 ` metin d
2012-11-22 0:48 ` Jaegeuk Hanse
2012-11-22 1:09 ` Johannes Weiner
2012-11-22 9:37 ` metin d
2012-11-22 13:16 ` Jaegeuk Hanse
2012-11-22 16:17 ` Johannes Weiner
2012-11-23 2:14 ` Jaegeuk Hanse
2012-11-23 1:58 ` Jaegeuk Hanse
2012-11-23 8:08 ` metin d
2012-11-23 8:17 ` Jaegeuk Hanse
2012-11-23 8:25 ` metin d
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