libnvdimm: Notify disk drivers to revalidate region read-only

[linux-2.6-microblaze.git] / drivers / nvdimm / region_devs.c

diff --git a/drivers/nvdimm/region_devs.c b/drivers/nvdimm/region_devs.c
index ef23119..51870eb 100644 (file)
--- a/drivers/nvdimm/region_devs.c
+++ b/drivers/nvdimm/region_devs.c
@@ -518,6 +518,12 @@ static ssize_t read_only_show(struct device *dev,
        return sprintf(buf, "%d\n", nd_region->ro);
 }
 
+static int revalidate_read_only(struct device *dev, void *data)
+{
+       nd_device_notify(dev, NVDIMM_REVALIDATE_REGION);
+       return 0;
+}
+
 static ssize_t read_only_store(struct device *dev,
                struct device_attribute *attr, const char *buf, size_t len)
 {
@@ -529,6 +535,7 @@ static ssize_t read_only_store(struct device *dev,
                return rc;
 
        nd_region->ro = ro;
+       device_for_each_child(dev, NULL, revalidate_read_only);
        return len;
 }
 static DEVICE_ATTR_RW(read_only);