Add a "max_size" parameter to diff_delta()

Anything that generates a delta to see if two objects are close usually
isn't interested in the delta ends up being bigger than some specified
size, and this allows us to stop delta generation early when that
happens.

1 files changed, 1 insertions, 1 deletions

diff --git a/delta.h b/delta.h
index df97ff84f7..ccc0c9eceb 100644
--- a/delta.h
+++ b/delta.h
@@ -4,7 +4,7 @@
 /* handling of delta buffers */
 extern void *diff_delta(void *from_buf, unsigned long from_size,
 			void *to_buf, unsigned long to_size,
-		        unsigned long *delta_size);
+		        unsigned long *delta_size, unsigned long max_size);
 extern void *patch_delta(void *src_buf, unsigned long src_size,
 			 void *delta_buf, unsigned long delta_size,
 			 unsigned long *dst_size);