This lets you adjust the vary_r tunable on a per-rule basis.
Reflects ceph.git commit f944ccc20aee60a7d8da7e405ec75ad1cd449fac.
Signed-off-by: Ilya Dryomov <ilya.dryomov@xxxxxxxxxxx>
---
include/linux/crush/crush.h | 1 +
net/ceph/crush/mapper.c | 5 +++++
2 files changed, 6 insertions(+)
diff --git a/include/linux/crush/crush.h b/include/linux/crush/crush.h
index 75f36a6c7f67..4fad5f8ee01d 100644
--- a/include/linux/crush/crush.h
+++ b/include/linux/crush/crush.h
@@ -51,6 +51,7 @@ enum {
CRUSH_RULE_SET_CHOOSELEAF_TRIES = 9, /* override chooseleaf_descend_once */
CRUSH_RULE_SET_CHOOSE_LOCAL_TRIES = 10,
CRUSH_RULE_SET_CHOOSE_LOCAL_FALLBACK_TRIES = 11,
+ CRUSH_RULE_SET_CHOOSELEAF_VARY_R = 12
};
/*
diff --git a/net/ceph/crush/mapper.c b/net/ceph/crush/mapper.c
index 947150cde297..a1ef53c04415 100644
--- a/net/ceph/crush/mapper.c
+++ b/net/ceph/crush/mapper.c
@@ -709,6 +709,11 @@ int crush_do_rule(const struct crush_map *map,
choose_local_fallback_retries = curstep->arg1;
break;
+ case CRUSH_RULE_SET_CHOOSELEAF_VARY_R:
+ if (curstep->arg1 >= 0)
+ vary_r = curstep->arg1;
+ break;
+
case CRUSH_RULE_CHOOSELEAF_FIRSTN:
case CRUSH_RULE_CHOOSE_FIRSTN:
firstn = 1;
--
1.7.10.4
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