[PATCH 8/8] dax: add debug for region available_size

[Dan Williams]

Add dynamic debug statements to dump the per-dax-dev resource
allocations and device offsets.

Signed-off-by: Dan Williams <dan.j.willi...@intel.com>
---
 drivers/dax/dax.c |    6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/drivers/dax/dax.c b/drivers/dax/dax.c
index b130eff91b83..d1641e69a088 100644
--- a/drivers/dax/dax.c
+++ b/drivers/dax/dax.c
@@ -97,8 +97,11 @@ static unsigned long long dax_region_avail_size(
        WARN_ON_ONCE(!mutex_is_locked(&dax_region->lock));
 
        size = resource_size(&dax_region->res);
-       for_each_dax_region_resource(dax_region, res)
+       for_each_dax_region_resource(dax_region, res) {
+               dev_dbg(dax_region->dev, "%s: %pr offset: %lx\n",
+                               res->name, res, res->desc);
                size -= resource_size(res);
+       }
 
        return size;
 }
@@ -372,6 +375,7 @@ struct dax_region *alloc_dax_region(struct device *parent, 
int region_id,
        dax_region->res.name = dev_name(parent);
        dax_region->res.start = res->start;
        dax_region->res.end = res->end;
+       dax_region->res.flags = IORESOURCE_MEM;
        dax_region->pfn_flags = pfn_flags;
        mutex_init(&dax_region->lock);
        kref_init(&dax_region->kref);