dm writecache: use bdev_nr_sectors() instead of open-coded equivalent

Signed-off-by: Mike Snitzer <snitzer@redhat.com>

diff --git a/drivers/md/dm-writecache.c b/drivers/md/dm-writecache.c
index baf5a9c..844c4be 100644 (file)
--- a/drivers/md/dm-writecache.c
+++ b/drivers/md/dm-writecache.c
@@ -978,7 +978,7 @@ static void writecache_resume(struct dm_target *ti)
 
        wc_lock(wc);
 
-       wc->data_device_sectors = i_size_read(wc->dev->bdev->bd_inode) >> SECTOR_SHIFT;
+       wc->data_device_sectors = bdev_nr_sectors(wc->dev->bdev);
 
        if (WC_MODE_PMEM(wc)) {
                persistent_memory_invalidate_cache(wc->memory_map, wc->memory_map_size);