Messages in this thread | | | Date | Thu, 15 Sep 2011 11:15:40 -0400 | From | Christoph Hellwig <> | Subject | Re: [PATCH]: xen/blkback: Add support for old BARRIER requests - 'feature-barrier', was "Help with implementing some form of barriers in 3.0 kernels." |
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Btw, I'm really against exporting any of the low-level request/elevator code interfaces. I have plans for huge changes in that area, and having someone poke into it is just a bad idea.
Try to take a look at the barrier era dm implementation of them, which did the draining on the bio layer and copy & paste that.
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