From: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
To: Christoph Lameter <clameter@sgi.com>
Cc: linux-mm@kvack.org, lee.schermerhorn@hp.com,
lhms-devel@lists.sourceforge.net, taka@valinux.co.jp,
marcelo.tosatti@cyclades.com
Subject: Re: [RFC 2/6] Swapless V1: Add SWP_TYPE_MIGRATION
Date: Tue, 4 Apr 2006 20:04:09 +0900 [thread overview]
Message-ID: <20060404200409.a78cdb2a.kamezawa.hiroyu@jp.fujitsu.com> (raw)
In-Reply-To: <20060404065750.24532.67454.sendpatchset@schroedinger.engr.sgi.com>
On Mon, 3 Apr 2006 23:57:50 -0700 (PDT)
Christoph Lameter <clameter@sgi.com> wrote:
>
> #define MAX_SWAPFILES_SHIFT 5
> -#define MAX_SWAPFILES (1 << MAX_SWAPFILES_SHIFT)
> +#define MAX_SWAPFILES ((1 << MAX_SWAPFILES_SHIFT)-1)
> +
> +/* Use last entry for page migration swap entries */
> +#define SWP_TYPE_MIGRATION MAX_SWAPFILES
How about this ?
#ifdef CONFIG_MIGRATION
#define MAX_SWAPFILES ((1 << MAX_SWAPFILES_SHIFT) - 1)
#else
#define MAX_SWAPFILES (1 << MAX_SWAPFILES_SHIFT)
#endif
#define SWP_TYPE_MIGRATION (MAX_SWAPFILES + 1)
.....but I don't think there is a user who uses 32 swaps....
--Kame
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next prev parent reply other threads:[~2006-04-04 11:04 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-04-04 6:57 [RFC 0/6] Swapless Page Migration V1: Overview Christoph Lameter
2006-04-04 6:57 ` [RFC 1/6] Swapless V1: try_to_unmap() - Rename ignrefs to "migration" Christoph Lameter
2006-04-04 6:57 ` [RFC 2/6] Swapless V1: Add SWP_TYPE_MIGRATION Christoph Lameter
2006-04-04 11:04 ` KAMEZAWA Hiroyuki [this message]
2006-04-04 6:57 ` [RFC 3/6] Swapless V1: try_to_unmap() - Create migration entries Christoph Lameter
2006-04-04 6:58 ` [RFC 4/6] Swapless V1: remove migration ptes Christoph Lameter
2006-04-04 6:58 ` [RFC 5/6] Swapless V1: Rip out swap migration code Christoph Lameter
2006-04-04 10:37 ` KAMEZAWA Hiroyuki
2006-04-04 15:06 ` Christoph Lameter
2006-04-05 1:06 ` KAMEZAWA Hiroyuki
2006-04-05 2:45 ` Christoph Lameter
2006-04-05 3:33 ` KAMEZAWA Hiroyuki
2006-04-05 3:47 ` Christoph Lameter
2006-04-05 4:07 ` KAMEZAWA Hiroyuki
2006-04-04 6:58 ` [RFC 6/6] Swapless V1: Revise main migration logic Christoph Lameter
2006-04-04 10:58 ` KAMEZAWA Hiroyuki
2006-04-04 14:24 ` Christoph Lameter
2006-04-05 14:46 ` [Lhms-devel] [RFC 0/6] Swapless Page Migration V1: Overview Lee Schermerhorn
2006-04-05 16:28 ` Christoph Lameter
2006-04-05 16:58 ` Lee Schermerhorn
2006-04-05 17:43 ` Christoph Lameter
2006-04-05 18:52 ` Lee Schermerhorn
2006-04-05 18:17 ` Some ideas on lazy migration with swapless migration Christoph Lameter
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