From: Dave Hansen <haveblue@us.ibm.com>
To: Hiroyuki KAMEZAWA <kamezawa.hiroyu@jp.fujitsu.com>
Cc: Linux Kernel ML <linux-kernel@vger.kernel.org>,
linux-mm <linux-mm@kvack.org>,
lhms <lhms-devel@lists.sourceforge.net>,
William Lee Irwin III <wli@holomorphy.com>
Subject: Re: [Lhms-devel] [RFC] buddy allocator without bitmap [2/4]
Date: Thu, 26 Aug 2004 08:50:02 -0700 [thread overview]
Message-ID: <1093535402.2984.11.camel@nighthawk> (raw)
In-Reply-To: <412DD1AA.8080408@jp.fujitsu.com>
On Thu, 2004-08-26 at 05:03, Hiroyuki KAMEZAWA wrote:
> - MARK_USED(index + size, high, area);
> + page[size].flags |= (1 << PG_private);
> + page[size].private = high;
> }
> return page;
> }
...
> + /* Atomic operation is needless here */
> + page->flags &= ~(1 << PG_private);
See linux/page_flags.h:
#define SetPagePrivate(page) set_bit(PG_private, &(page)->flags)
#define ClearPagePrivate(page) clear_bit(PG_private, &(page)->flags)
#define PagePrivate(page) test_bit(PG_private, &(page)->flags)
-- Dave
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next prev parent reply other threads:[~2004-08-26 15:50 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-08-26 12:03 Hiroyuki KAMEZAWA
2004-08-26 15:50 ` Dave Hansen [this message]
2004-08-26 23:05 ` [Lhms-devel] " Hiroyuki KAMEZAWA
2004-08-26 23:11 ` Dave Hansen
2004-08-26 23:28 ` Hiroyuki KAMEZAWA
2004-08-27 0:18 ` Andrew Morton
2004-08-27 0:27 ` Hiroyuki KAMEZAWA
2004-08-27 4:48 ` Hiroyuki KAMEZAWA
2004-08-27 4:59 ` Andrew Morton
2004-08-27 5:20 ` Hiroyuki KAMEZAWA
2004-08-27 5:04 ` Dave Hansen
2004-08-27 5:31 ` Hiroyuki KAMEZAWA
2004-08-27 5:31 ` Dave Hansen
2004-08-27 5:47 ` Dave Hansen
2004-08-27 6:09 ` Hiroyuki KAMEZAWA
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