more documentation

1 files changed, 8 insertions, 0 deletions

diff --git a/magic_buddy.c b/magic_buddy.c
index a741132..1e88c21 100644
--- a/magic_buddy.c
+++ b/magic_buddy.c
@@ -311,3 +311,11 @@ int shrink_buddy(size_t new_size, struct buddy *state) {
     state->root_logsize = logsize;
     return 1;
 }
+
+void move_buddy(struct buddy *new_state, struct buddy *old_state) {
+    memcpy(new_state, old_state, sizeof(struct buddy));
+    for (size_t i = 0; i < ADDRESS_BITS; i++) {
+        if (!new_state->avail[i]) continue;
+        new_state->avail[i]->pprev = &(new_state->avail[i]);
+    }
+}