Re: [PATCH 00/30] C/R OpenVZ/Virtuozzo style

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On Fri, Apr 10, 2009 at 08:06:55AM -0700, Linus Torvalds wrote:
> On Fri, 10 Apr 2009, Alexey Dobriyan wrote:
> >
> > This is to show how we see C/R and to provoke discussion on number of
> > important issues (mounts, ...).
> 
> My only initial reaction is that I absolutely hate the naming (not to say 
> I love the code - just to say that I didn't even look at it, because I got 
> hung up on the name).
> 
> "cr"? It could be anything. I realize that to _you_ that is meaningful, 
> but to somebody less specifically interested in checkpoint-restore 'cr' 
> means 'carriage return' or just doesn't really say anything at all. 

Well, in OpenVZ everything is in kernel/cpt/ and prefixed with "cpt_"
and "rst_". And I think "cr_" is super nice prefix: it's short, it's C-like,
it reminds about restart part. Eventually, C/R will become standard
in-kernel thing everyone should be at least aware of, so it's like
learning what "vma" means.

> That goes both for file naming (kernel/cr/xyzzy.c) and to a lesser degree 
> for function naming too. I also don't think it makes sense to have 
> something like kernel/cr/cr-x86_32.c or kernel/cr/cr-tty.c - maybe that is 
> good right now, but I sure hope that the long-term goal is to have these 
> things in the code that will need to change them when the code gets 
> updated (ie arch/x86/kernel and drivers/char/)

In the long run, yes, C/R should be moved closer to core code it tries to
checkpoint. Right now, however, doing "make kernel/cr/" is much quicker
and C/R can not do much, so it's unclear how exactly splitting should be
done.
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