Messages in this thread |  | | | Date | Tue, 26 May 2009 18:44:36 -0500 | | From | "Serge E. Hallyn" <> | | Subject | Re: [PATCH 18/38] C/R: core stuff |
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Quoting Alexey Dobriyan (adobriyan@gmail.com): > And since you guys showed that just idea of in-kernel checkpointing is not > rejected outright, it doesn't mean that you can drag every single idea too.
Can you rephrase here? I have no idea what you mean by 'drag every single idea'
> Because history shows, that once something (especially user-visible, > like restart syscall semantics) is in kernel it's nearly impossible > to cut it out, so it's very-very important to get it right from the very > beginning.
Absolutely agree (at least in terms of the API for sys_restart() and sys_checkpoint(), not for inane other stuff like whether there is a CKPT_OBJ_RESTART_BLOCK). That is why 6 months ago we were trying to get to an agreement with Andrey Mirkin about a precise API that would definately suit both approaches (in-kernel and userspace task recreation at sys_restart). That way the basics could go upstream and the rest could get settled later as we see the fallout from either decision.
-serge
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