Re: [PATCH 1/5] mm: add numa node symlink for memory section in sysfs

[Alex Chiang <achiang@hp.com>]

* KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>:
> Alex Chiang wrote:
> > Commit c04fc586c (mm: show node to memory section relationship with
> > symlinks in sysfs) created symlinks from nodes to memory sections, e.g.
> >
> > /sys/devices/system/node/node1/memory135 -> ../../memory/memory135
> >
> > If you're examining the memory section though and are wondering what
> > node it might belong to, you can find it by grovelling around in
> > sysfs, but it's a little cumbersome.
> >
> > Add a reverse symlink for each memory section that points back to the
> > node to which it belongs.
> >
> > Cc: Gary Hade <garyhade@us.ibm.com>
> > Cc: Badari Pulavarty <pbadari@us.ibm.com>
> > Cc: Ingo Molnar <mingo@elte.hu>
> > Signed-off-by: Alex Chiang <achiang@hp.com>
> 
> 2 yeas ago, I wanted to add this symlink. But don't...because
> some vendor's host has no 1-to-1 relationship between a memsection
> and a node. (I don't remember precisely, sorry....s390?)

Hm, ok. I'll cc the s390 folks in the next version of this series.

Thanks for the pointer.

/ac