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Re: Proposal: B_ARRIER (addresses wapbl performance?)

On Tue, Dec 09, 2008 at 10:14:25AM -0800, Jason Thorpe wrote:
> Repeat: Ordered tags have nothing to do with whether or not a write is  
> committed to stable storage.  But that is precisely what you want for a 
> write to a journal.  FUA is the mechanism that is specifically intended 
> to get the behavior you want for a journal.

For the journal we only want "written to stable storage before written
the meta data blocks back". Isn't that what ordered tags are supposed to


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