Minor optimization: don't make a dependency between two traverse_reads.

diff --git a/ccan/tdb/tools/replay_trace.c b/ccan/tdb/tools/replay_trace.c
index 8e099f2f13a255cfefbf15e5806e27ceac397ab4..0ca81aaa0386d29aba032162320045231fa9a1a0 100644 (file)
--- a/ccan/tdb/tools/replay_trace.c
+++ b/ccan/tdb/tools/replay_trace.c
@@ -1443,6 +1443,12 @@ static void make_traverse_depends(char *filename[],
 
        for (i = 1; i < num_traversals; i++) {
                const struct op *prev = &op[dep[i-1].file][dep[i-1].op_num];
 
        for (i = 1; i < num_traversals; i++) {
                const struct op *prev = &op[dep[i-1].file][dep[i-1].op_num];

+               const struct op *curr = &op[dep[i].file][dep[i].op_num];
+
+               /* Read traverses don't depend on each other (read lock). */
+               if (prev->op == OP_TDB_TRAVERSE_READ_START
+                   && curr->op == OP_TDB_TRAVERSE_READ_START)
+                       continue;

 
                /* Only make dependency if it's clear. */
                if (compare_traverse_dep(&dep[i], &dep[i-1])) {
 
                /* Only make dependency if it's clear. */
                if (compare_traverse_dep(&dep[i], &dep[i-1])) {