From: Dave Hansen <dave@linux.vnet.ibm.com>
To: Mike Waychison <mikew@google.com>
Cc: jeremy@goop.org, arnd@arndb.de,
containers@lists.linux-foundation.org,
"H. Peter Anvin" <hpa@zytor.com>,
linux-kernel@vger.kernel.org, linux-mm@kvack.org,
Linux Torvalds <torvalds@osdl.org>,
Alexander Viro <viro@zeniv.linux.org.uk>,
linux-api@vger.kernel.org, Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@elte.hu>
Subject: Re: [RFC v11][PATCH 03/13] General infrastructure for checkpoint restart
Date: Tue, 16 Dec 2008 16:13:03 -0800 [thread overview]
Message-ID: <1229472783.17206.358.camel@nimitz> (raw)
In-Reply-To: <49482F14.1040407@google.com>
On Tue, 2008-12-16 at 14:43 -0800, Mike Waychison wrote:
> Hmm, if I'm understanding you correctly, adding ref counts explicitly
> (like you suggest below) would be used to let a lower layer defer
> writes. Seems like this could be just as easily done with explicits
> kmallocs and transferring ownership of the allocated memory to the
> in-kernel representation handling layer below (which in turn queues the
> data structures for writes).
Yup, that's true. We'd effectively shift the burden of freeing those
buffers into the cr_write() (or whatever we call it) function.
But, I'm just thinking about the sys_checkpoint() side. I need to go
look at the restart code too.
-- Dave
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WARNING: multiple messages have this Message-ID (diff)
From: Dave Hansen <dave@linux.vnet.ibm.com>
To: Mike Waychison <mikew@google.com>
Cc: jeremy@goop.org, arnd@arndb.de,
containers@lists.linux-foundation.org,
"H. Peter Anvin" <hpa@zytor.com>,
linux-kernel@vger.kernel.org, linux-mm@kvack.org,
Linux Torvalds <torvalds@linux-foundation.org>,
Alexander Viro <viro@zeniv.linux.org.uk>,
linux-api@vger.kernel.org, Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@elte.hu>
Subject: Re: [RFC v11][PATCH 03/13] General infrastructure for checkpoint restart
Date: Tue, 16 Dec 2008 16:13:03 -0800 [thread overview]
Message-ID: <1229472783.17206.358.camel@nimitz> (raw)
In-Reply-To: <49482F14.1040407@google.com>
On Tue, 2008-12-16 at 14:43 -0800, Mike Waychison wrote:
> Hmm, if I'm understanding you correctly, adding ref counts explicitly
> (like you suggest below) would be used to let a lower layer defer
> writes. Seems like this could be just as easily done with explicits
> kmallocs and transferring ownership of the allocated memory to the
> in-kernel representation handling layer below (which in turn queues the
> data structures for writes).
Yup, that's true. We'd effectively shift the burden of freeing those
buffers into the cr_write() (or whatever we call it) function.
But, I'm just thinking about the sys_checkpoint() side. I need to go
look at the restart code too.
-- Dave
next prev parent reply other threads:[~2008-12-17 0:13 UTC|newest]
Thread overview: 132+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-12-05 17:31 [RFC v11][PATCH 00/13] Kernel based checkpoint/restart Oren Laadan
2008-12-05 17:31 ` Oren Laadan
2008-12-05 17:31 ` Oren Laadan
2008-12-05 17:31 ` [RFC v11][PATCH 01/13] Create syscalls: sys_checkpoint, sys_restart Oren Laadan
2008-12-05 17:31 ` Oren Laadan
2008-12-05 17:31 ` Oren Laadan
2008-12-05 17:31 ` [RFC v11][PATCH 04/13] x86 support for checkpoint/restart Oren Laadan
2008-12-05 17:31 ` Oren Laadan
2008-12-05 17:31 ` Oren Laadan
[not found] ` <1228498282-11804-5-git-send-email-orenl-eQaUEPhvms7ENvBUuze7eA@public.gmane.org>
2008-12-17 2:19 ` Mike Waychison
2008-12-17 2:19 ` Mike Waychison
2008-12-17 2:19 ` Mike Waychison
[not found] ` <494861CA.8000403-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org>
2008-12-17 15:23 ` Oren Laadan
2008-12-17 15:23 ` Oren Laadan
2008-12-17 15:23 ` Oren Laadan
2008-12-05 17:31 ` [RFC v11][PATCH 06/13] Restore memory address space Oren Laadan
2008-12-05 17:31 ` Oren Laadan
2008-12-05 17:31 ` Oren Laadan
2008-12-05 17:31 ` [RFC v11][PATCH 10/13] External checkpoint of a task other than ourself Oren Laadan
2008-12-05 17:31 ` Oren Laadan
2008-12-05 17:31 ` Oren Laadan
2008-12-05 17:31 ` [RFC v11][PATCH 13/13] Restart multiple processes Oren Laadan
2008-12-05 17:31 ` Oren Laadan
2008-12-05 17:31 ` Oren Laadan
[not found] ` <1228498282-11804-1-git-send-email-orenl-eQaUEPhvms7ENvBUuze7eA@public.gmane.org>
2008-12-05 17:31 ` [RFC v11][PATCH 01/13] Create syscalls: sys_checkpoint, sys_restart Oren Laadan
2008-12-05 17:31 ` [RFC v11][PATCH 02/13] Checkpoint/restart: initial documentation Oren Laadan
2008-12-05 17:31 ` Oren Laadan
2008-12-05 17:31 ` Oren Laadan
2008-12-05 17:31 ` Oren Laadan
2008-12-05 17:31 ` [RFC v11][PATCH 03/13] General infrastructure for checkpoint restart Oren Laadan
2008-12-05 17:31 ` Oren Laadan
2008-12-05 17:31 ` Oren Laadan
[not found] ` <1228498282-11804-4-git-send-email-orenl-eQaUEPhvms7ENvBUuze7eA@public.gmane.org>
2008-12-06 7:26 ` Joe Perches
2008-12-06 7:26 ` Joe Perches
2008-12-06 7:26 ` Joe Perches
2008-12-06 7:26 ` Joe Perches
2008-12-16 19:04 ` Mike Waychison
2008-12-16 21:54 ` Mike Waychison
2008-12-16 19:04 ` Mike Waychison
2008-12-16 19:04 ` Mike Waychison
2008-12-16 19:28 ` Linus Torvalds
2008-12-16 19:28 ` Linus Torvalds
[not found] ` <4947FBC8.2000601-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org>
2008-12-16 19:28 ` Linus Torvalds
2008-12-16 21:54 ` Mike Waychison
2008-12-16 21:54 ` Mike Waychison
2008-12-16 22:14 ` Dave Hansen
2008-12-16 22:14 ` Dave Hansen
2008-12-16 22:43 ` Mike Waychison
2008-12-16 22:43 ` Mike Waychison
2008-12-16 22:43 ` Mike Waychison
2008-12-17 0:13 ` Dave Hansen [this message]
2008-12-17 0:13 ` Dave Hansen
[not found] ` <49482F14.1040407-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org>
2008-12-17 0:13 ` Dave Hansen
2008-12-16 23:42 ` Oren Laadan
2008-12-16 23:42 ` Oren Laadan
[not found] ` <49483D01.1050603-eQaUEPhvms7ENvBUuze7eA@public.gmane.org>
2008-12-17 0:42 ` Mike Waychison
2008-12-17 0:42 ` Mike Waychison
2008-12-17 0:42 ` Mike Waychison
2008-12-17 2:08 ` Oren Laadan
2008-12-17 2:08 ` Oren Laadan
[not found] ` <49484AE2.3000007-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org>
2008-12-17 2:08 ` Oren Laadan
2008-12-16 23:42 ` Oren Laadan
[not found] ` <49482394.10006-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org>
2008-12-16 22:14 ` Dave Hansen
2008-12-05 17:31 ` Oren Laadan
2008-12-05 17:31 ` [RFC v11][PATCH 04/13] x86 support for checkpoint/restart Oren Laadan
2008-12-05 17:31 ` [RFC v11][PATCH 05/13] Dump memory address space Oren Laadan
2008-12-05 17:31 ` Oren Laadan
2008-12-05 17:31 ` Oren Laadan
2008-12-05 17:31 ` Oren Laadan
2008-12-18 2:26 ` Mike Waychison
2008-12-18 2:26 ` Mike Waychison
[not found] ` <4949B4ED.9060805-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org>
2008-12-18 11:10 ` Oren Laadan
2008-12-18 11:10 ` Oren Laadan
2008-12-18 11:10 ` Oren Laadan
2008-12-18 18:15 ` Mike Waychison
2008-12-18 18:15 ` Mike Waychison
[not found] ` <494A9350.1060309-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org>
2008-12-18 18:21 ` Dave Hansen
2008-12-18 18:21 ` Dave Hansen
2008-12-18 18:21 ` Dave Hansen
2008-12-18 18:21 ` Dave Hansen
2008-12-18 20:11 ` Oren Laadan
2008-12-18 20:11 ` Oren Laadan
2008-12-18 20:11 ` Oren Laadan
[not found] ` <494A2F94.2090800-eQaUEPhvms7ENvBUuze7eA@public.gmane.org>
2008-12-18 15:05 ` Dave Hansen
2008-12-18 15:05 ` Dave Hansen
2008-12-18 15:05 ` Dave Hansen
2008-12-18 15:05 ` Dave Hansen
2008-12-18 15:54 ` Dave Hansen
2008-12-18 15:54 ` Dave Hansen
2008-12-18 15:54 ` Dave Hansen
2008-12-18 15:54 ` Dave Hansen
2008-12-18 20:00 ` Oren Laadan
2008-12-18 20:00 ` Oren Laadan
2008-12-18 20:00 ` Oren Laadan
2008-12-18 18:15 ` Mike Waychison
[not found] ` <1228498282-11804-6-git-send-email-orenl-eQaUEPhvms7ENvBUuze7eA@public.gmane.org>
2008-12-18 2:26 ` Mike Waychison
2008-12-05 17:31 ` [RFC v11][PATCH 06/13] Restore " Oren Laadan
2008-12-05 17:31 ` [RFC v11][PATCH 07/13] Infrastructure for shared objects Oren Laadan
2008-12-05 17:31 ` Oren Laadan
2008-12-05 17:31 ` Oren Laadan
2008-12-05 17:31 ` Oren Laadan
2008-12-05 17:31 ` [RFC v11][PATCH 08/13] Dump open file descriptors Oren Laadan
2008-12-05 17:31 ` Oren Laadan
2008-12-05 17:31 ` Oren Laadan
2008-12-05 17:31 ` Oren Laadan
2008-12-05 17:31 ` [RFC v11][PATCH 09/13] Restore open file descriprtors Oren Laadan
2008-12-05 17:31 ` Oren Laadan
2008-12-05 17:31 ` Oren Laadan
2008-12-05 17:31 ` Oren Laadan
2008-12-05 17:31 ` [RFC v11][PATCH 10/13] External checkpoint of a task other than ourself Oren Laadan
2008-12-05 17:31 ` Oren Laadan
2008-12-05 17:31 ` [RFC v11][PATCH 11/13] Track in-kernel when we expect checkpoint/restart to work Oren Laadan
2008-12-05 17:31 ` Oren Laadan
2008-12-05 17:31 ` Oren Laadan
2008-12-05 17:31 ` Oren Laadan
2008-12-05 17:31 ` [RFC v11][PATCH 12/13] Checkpoint multiple processes Oren Laadan
2008-12-05 17:31 ` Oren Laadan
2008-12-05 17:31 ` Oren Laadan
2008-12-05 17:31 ` Oren Laadan
2008-12-05 17:31 ` [RFC v11][PATCH 13/13] Restart " Oren Laadan
2008-12-05 17:31 ` Oren Laadan
2008-12-06 0:19 ` [RFC v11][PATCH 00/13] Kernel based checkpoint/restart Serge E. Hallyn
2008-12-06 0:19 ` Serge E. Hallyn
2008-12-06 0:19 ` Serge E. Hallyn
2008-12-06 0:19 ` Serge E. Hallyn
2008-12-09 19:42 ` Serge E. Hallyn
2008-12-09 19:42 ` Serge E. Hallyn
2008-12-09 19:42 ` Serge E. Hallyn
2008-12-09 19:42 ` Serge E. Hallyn
2008-12-16 18:43 ` Dave Hansen
2008-12-16 18:43 ` Dave Hansen
2008-12-16 18:43 ` Dave Hansen
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