[dm-devel] [PATCHSET block#for-2.6.36-post] block: replace barrier with sequenced flush

[Christoph Hellwig]

On Mon, Aug 23, 2010 at 02:30:33PM +0200, Tejun Heo wrote:
> It might be useful to give several example configurations with
> different cache configurations.  I don't have much experience with
> battery backed arrays but aren't they suppose to report write through
> cache automatically?

They usually do.  I have one that doesn't, but SYNCHRONIZE CACHE on
it is so fast that it effectively must be a no-op.