diff options
Diffstat (limited to 'drivers/nvdimm/bus.c')
| -rw-r--r-- | drivers/nvdimm/bus.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/drivers/nvdimm/bus.c b/drivers/nvdimm/bus.c index dd12f38397db..ec59f1f26d95 100644 --- a/drivers/nvdimm/bus.c +++ b/drivers/nvdimm/bus.c @@ -227,6 +227,24 @@ int __nd_driver_register(struct nd_device_driver *nd_drv, struct module *owner, } EXPORT_SYMBOL(__nd_driver_register); +int nvdimm_revalidate_disk(struct gendisk *disk) +{ + struct device *dev = disk->driverfs_dev; + struct nd_region *nd_region = to_nd_region(dev->parent); + const char *pol = nd_region->ro ? "only" : "write"; + + if (nd_region->ro == get_disk_ro(disk)) + return 0; + + dev_info(dev, "%s read-%s, marking %s read-%s\n", + dev_name(&nd_region->dev), pol, disk->disk_name, pol); + set_disk_ro(disk, nd_region->ro); + + return 0; + +} +EXPORT_SYMBOL(nvdimm_revalidate_disk); + static ssize_t modalias_show(struct device *dev, struct device_attribute *attr, char *buf) { |