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-rw-r--r--drivers/md/persistent-data/dm-btree.h8
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/md/persistent-data/dm-btree.h b/drivers/md/persistent-data/dm-btree.h
index 8672d159e0b5..dacfc34180b4 100644
--- a/drivers/md/persistent-data/dm-btree.h
+++ b/drivers/md/persistent-data/dm-btree.h
@@ -137,6 +137,14 @@ int dm_btree_remove(struct dm_btree_info *info, dm_block_t root,
/*
* Returns < 0 on failure. Otherwise the number of key entries that have
* been filled out. Remember trees can have zero entries, and as such have
+ * no lowest key.
+ */
+int dm_btree_find_lowest_key(struct dm_btree_info *info, dm_block_t root,
+ uint64_t *result_keys);
+
+/*
+ * Returns < 0 on failure. Otherwise the number of key entries that have
+ * been filled out. Remember trees can have zero entries, and as such have
* no highest key.
*/
int dm_btree_find_highest_key(struct dm_btree_info *info, dm_block_t root,