dm thin: refactor data dev resize

[karo-tx-linux.git] / drivers / md / dm-thin-metadata.c

diff --git a/drivers/md/dm-thin-metadata.c b/drivers/md/dm-thin-metadata.c
index 00cee02f8fc9b299788941c9b4147abdfc56c83c..9452a489ed999d765211579c3d93fc4f4f8f8c91 100644 (file)
--- 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;