core: generalize extstore's defered IO queue

want to reuse the deferred IO system for extstore for something else.
Should allow evolving into a more plugin-centric system.

step one of three(?) - replace in place and tests pass with extstore
enabled.

step two should move more extstore code into storage.c

step three should build the IO queue code without ifdef gating.

1 files changed, 2 insertions, 0 deletions

diff --git a/storage.h b/storage.h
index 60f499b..7bcaf62 100644
--- a/storage.h
+++ b/storage.h
@@ -1,6 +1,8 @@
 #ifndef STORAGE_H
 #define STORAGE_H
 
+void storage_submit_cb(void *ctx, io_pending_t *pending);
+void storage_free_cb(void *ctx, io_pending_t *pending);
 int start_storage_write_thread(void *arg);
 void storage_write_pause(void);
 void storage_write_resume(void);