dm thin: refactor data dev resize

Refactor device size functions in preparation for similar metadata
device resizing functions.

Signed-off-by: Joe Thornber <ejt@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>

1 files changed, 5 insertions, 5 deletions

diff --git a/drivers/md/dm-thin-metadata.c b/drivers/md/dm-thin-metadata.c
index 00cee02f8fc9..9452a489ed99 100644
--- a/drivers/md/dm-thin-metadata.c
+++ b/drivers/md/dm-thin-metadata.c
@@ -1645,12 +1645,12 @@ int dm_thin_get_highest_mapped_block(struct dm_thin_device *td,
         return r;
 }
 
-static int __resize_data_dev(struct dm_pool_metadata *pmd, dm_block_t new_count)
+static int __resize_space_map(struct dm_space_map *sm, dm_block_t new_count)
 {
         int r;
         dm_block_t old_count;
 
-        r = dm_sm_get_nr_blocks(pmd->data_sm, &old_count);
+        r = dm_sm_get_nr_blocks(sm, &old_count);
         if (r)
                 return r;
 
@@ -1658,11 +1658,11 @@ static int __resize_data_dev(struct dm_pool_metadata *pmd, dm_block_t new_count)
                 return 0;
 
         if (new_count < old_count) {
-                DMERR("cannot reduce size of data device");
+                DMERR("cannot reduce size of space map");
                 return -EINVAL;
         }
 
-        return dm_sm_extend(pmd->data_sm, new_count - old_count);
+        return dm_sm_extend(sm, new_count - old_count);
 }
 
 int dm_pool_resize_data_dev(struct dm_pool_metadata *pmd, dm_block_t new_count)
@@ -1671,7 +1671,7 @@ int dm_pool_resize_data_dev(struct dm_pool_metadata *pmd, dm_block_t new_count)
 
         down_write(&pmd->root_lock);
         if (!pmd->fail_io)
-                r = __resize_data_dev(pmd, new_count);
+                r = __resize_space_map(pmd->data_sm, new_count);
         up_write(&pmd->root_lock);
 
         return r;