[RFC PATCH 01/12] dax: rate limit dev_dax_huge_fault() output

[Dave Jiang <dave.jiang@intel.com>]

Use dev_dbg_ratelimited() to rate limit the output of
dev_dax_huge_fault() in order to not flood the dmesg output.

Signed-off-by: Dave Jiang <dave.jiang@intel.com>
---
 drivers/dax/device.c | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/drivers/dax/device.c b/drivers/dax/device.c
index 22999a402e02..62206bcb63a6 100644
--- a/drivers/dax/device.c
+++ b/drivers/dax/device.c
@@ -244,9 +244,11 @@ static vm_fault_t dev_dax_huge_fault(struct vm_fault *vmf, unsigned int order)
 	int id;
 	struct dev_dax *dev_dax = filp->private_data;
 
-	dev_dbg(&dev_dax->dev, "%s: op=%s addr=%#lx order=%d\n", current->comm,
-		(vmf->flags & FAULT_FLAG_WRITE) ? "write" : "read",
-		vmf->address & ~((1UL << (order + PAGE_SHIFT)) - 1), order);
+	dev_dbg_ratelimited(&dev_dax->dev, "%s: op=%s addr=%#lx order=%d\n",
+			    current->comm,
+			    (vmf->flags & FAULT_FLAG_WRITE) ? "write" : "read",
+			    vmf->address & ~((1UL << (order + PAGE_SHIFT)) - 1),
+			    order);
 
 	id = dax_read_lock();
 	if (order == 0)
-- 
2.53.0