dm btree remove: remove unused function get_nr_entries()

rebalance_children() calls get_nr_entries() and assigns the result to an
unused local 'child_entries' variable.  Remove get_nr_entries() and
cleanup rebalance_children() accordingly.

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

diff --git a/drivers/md/persistent-data/dm-btree-remove.c b/drivers/md/persistent-data/dm-btree-remove.c
index 4222f77..421a36c 100644 (file)
--- a/drivers/md/persistent-data/dm-btree-remove.c
+++ b/drivers/md/persistent-data/dm-btree-remove.c
@@ -409,29 +409,11 @@ static int rebalance3(struct shadow_spine *s, struct dm_btree_info *info,
        return 0;
 }
 
-static int get_nr_entries(struct dm_transaction_manager *tm,
-                         dm_block_t b, uint32_t *result)
-{
-       int r;
-       struct dm_block *block;
-       struct btree_node *n;
-
-       r = dm_tm_read_lock(tm, b, &btree_node_validator, &block);
-       if (r)
-               return r;
-
-       n = dm_block_data(block);
-       *result = le32_to_cpu(n->header.nr_entries);
-
-       return dm_tm_unlock(tm, block);
-}
-
 static int rebalance_children(struct shadow_spine *s,
                              struct dm_btree_info *info,
                              struct dm_btree_value_type *vt, uint64_t key)
 {
        int i, r, has_left_sibling, has_right_sibling;
-       uint32_t child_entries;
        struct btree_node *n;
 
        n = dm_block_data(shadow_current(s));
@@ -458,10 +440,6 @@ static int rebalance_children(struct shadow_spine *s,
        if (i < 0)
                return -ENODATA;
 
-       r = get_nr_entries(info->tm, value64(n, i), &child_entries);
-       if (r)
-               return r;
-
        has_left_sibling = i > 0;
        has_right_sibling = i < (le32_to_cpu(n->header.nr_entries) - 1);