Re: How much of a mess does OpenVZ make? ;) Was: What can OpenVZ do?

On Fri, 27 Feb 2009 10:03:23 +0100 Ingo Molnar [off-list ref] wrote:

* Alexey Dobriyan [off-list ref] wrote:

quoted

quoted

I think the main question is: will we ever find ourselves in 
the future saying that "C/R sucks, nobody but a small 
minority uses it, wish we had never merged it"? I think the 
likelyhood of that is very low. I think the current OpenVZ 
stuff already looks very useful, and i dont think we've 
realized (let alone explored) all the possibilities yet.

This is collecting and start of dumping part of cleaned up 
OpenVZ C/R implementation, FYI.

 arch/x86/include/asm/unistd_32.h   |    2 
 arch/x86/kernel/syscall_table_32.S |    2 
 include/linux/Kbuild               |    1 
 include/linux/cr.h                 |   56 ++++++
 include/linux/ipc_namespace.h      |    3 
 include/linux/syscalls.h           |    5 
 init/Kconfig                       |    2 
 kernel/Makefile                    |    1 
 kernel/cr/Kconfig                  |   11 +
 kernel/cr/Makefile                 |    8 
 kernel/cr/cpt-cred.c               |  115 +++++++++++++
 kernel/cr/cpt-fs.c                 |  122 +++++++++++++
 kernel/cr/cpt-mm.c                 |  134 +++++++++++++++
 kernel/cr/cpt-ns.c                 |  324 +++++++++++++++++++++++++++++++++++++
 kernel/cr/cpt-signal.c             |  121 +++++++++++++
 kernel/cr/cpt-sys.c                |  228 ++++++++++++++++++++++++++
 kernel/cr/cr-ctx.c                 |  141 ++++++++++++++++
 kernel/cr/cr.h                     |   61 ++++++
 kernel/cr/rst-sys.c                |    9 +
 kernel/sys_ni.c                    |    3 
 20 files changed, 1349 insertions(+)

That does not look scary to me at all. Andrew?

I think we'd need to look into the details.  Sure, it's isolated from a
where-it-is-in-the-tree POV.  But I assume that each of those files has
intimate and intrusive knowledge of the internals of data structures?

--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@kvack.org.  For more info on Linux MM,
see: http://www.linux-mm.org/ .
Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a>