1 files changed, 2 insertions, 2 deletions

diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c
index 5eb7217738ed..e8b9a269fdde 100644
--- a/fs/btrfs/volumes.c
+++ b/fs/btrfs/volumes.c
@@ -2702,7 +2702,7 @@ int btrfs_grow_device(struct btrfs_trans_handle *trans,
 
         mutex_lock(&fs_info->chunk_mutex);
         old_total = btrfs_super_total_bytes(super_copy);
-        diff = new_size - device->total_bytes;
+        diff = round_down(new_size - device->total_bytes, fs_info->sectorsize);
 
         if (new_size <= device->total_bytes ||
             device->is_tgtdev_for_dev_replace) {
@@ -4406,7 +4406,7 @@ int btrfs_shrink_device(struct btrfs_device *device, u64 new_size)
         u64 diff;
 
         new_size = round_down(new_size, fs_info->sectorsize);
-        diff = old_size - new_size;
+        diff = round_down(old_size - new_size, fs_info->sectorsize);
 
         if (device->is_tgtdev_for_dev_replace)
                 return -EINVAL;