[dm-devel] Barrier support in device mapper

[Nikanth Karthikesan <knikanth suse de>]

Hi Alasdair

What are plans in supporting barriers in device mapper?

Sometime back Andi Kleen posted a patch[1] to support barriers for single-
device dm-devices.

Recently Milan Broz posted an RFC patch-set[2] to implement full-barrier 
support.

Are we going to get full-barrier support soon? If not, I would like to see 
Andi's patch being merged till we get full barrier support ready. I would like 
to know your thoughts.

Thanks
Nikanth Karthikesan
SUSE Labs

[1] http://lkml.org/lkml/2008/2/15/125
[2] http://article.gmane.org/gmane.linux.kernel.device-mapper.devel/5941