On Mon, Aug 31, 2015 at 12:59:44PM -0600, Ross Zwisler wrote:
> For DAX msync we just need to flush the given range using
> wb_cache_pmem(), which is now a public part of the PMEM API.
> The inclusion of <linux/dax.h> in fs/dax.c was done to make checkpatch
> happy.  Previously it was complaining about a bunch of undeclared
> functions that could be made static.

Should this be abstracted by adding a ->msync method?  Maybe not
worth to do for now, but it might be worth to keep that in mind.

Otherwise this looks fine to me.
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