README: add delete blob contract note
Signed-off-by: Patrick Venture <venture@google.com>
Change-Id: Iac2768eebcf1ab28e28cdba601574dbede4fc9ec
diff --git a/README.md b/README.md
index e3966c7..945289b 100644
--- a/README.md
+++ b/README.md
@@ -380,3 +380,5 @@
if that session is already open (e.g. `stat()` or `commit()`).
* The caveat is the open command where the session is provided to the
handler within the call.
+* The blob manager will only call `delete()` on a blob if there are no open
+ sessions to that blob id.