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-rw-r--r--net/ceph/crush/mapper.c11
1 files changed, 8 insertions, 3 deletions
diff --git a/net/ceph/crush/mapper.c b/net/ceph/crush/mapper.c
index 3a94eae7abe9..b79747c4b645 100644
--- a/net/ceph/crush/mapper.c
+++ b/net/ceph/crush/mapper.c
@@ -510,10 +510,15 @@ int crush_do_rule(struct crush_map *map,
switch (rule->steps[step].op) {
case CRUSH_RULE_TAKE:
w[0] = rule->steps[step].arg1;
- if (force_pos >= 0) {
- BUG_ON(force_context[force_pos] != w[0]);
+
+ /* find position in force_context/hierarchy */
+ while (force_pos >= 0 &&
+ force_context[force_pos] != w[0])
force_pos--;
- }
+ /* and move past it */
+ if (force_pos >= 0)
+ force_pos--;
+
wsize = 1;
break;