tdb2: clarify locking heirarchy; hashes, freelist, then expand lock.

[ccan] / ccan / tdb2 / io.c

diff --git a/ccan/tdb2/io.c b/ccan/tdb2/io.c
index 9f0582e0df338998302422aeba94396ea72b9a15..2bcee8a29a17665edf3a08a6b6264bdb7c446322 100644 (file)
--- a/ccan/tdb2/io.c
+++ b/ccan/tdb2/io.c
@@ -48,8 +48,7 @@ void tdb_mmap(struct tdb_context *tdb)
        if (tdb->flags & TDB_NOMMAP)
                return;
 
-       tdb->map_ptr = mmap(NULL, tdb->map_size, 
-                           PROT_READ|(tdb->read_only? 0:PROT_WRITE), 
+       tdb->map_ptr = mmap(NULL, tdb->map_size, tdb->mmap_flags,
                            MAP_SHARED, tdb->fd, 0);
 
        /*
@@ -74,7 +73,9 @@ static int tdb_oob(struct tdb_context *tdb, tdb_off_t len, bool probe)
        int ret;
 
        /* We can't hold pointers during this: we could unmap! */
-       assert(!tdb->direct_access || tdb_has_expansion_lock(tdb));
+       assert(!tdb->direct_access
+              || (tdb->flags & TDB_NOLOCK)
+              || tdb_has_expansion_lock(tdb));
 
        if (len <= tdb->map_size)
                return 0;