Diskless replication: trigger a BGSAVE after a config change.
Diskless replication: trigger a BGSAVE after a config change.

If we turn from diskless to disk-based replication via CONFIG SET, we
need a way to start a BGSAVE if there are slaves alerady waiting for a
BGSAVE to start. Normally with disk-based replication we do it as soon
as the previous child exits, but when there is a configuration change
via CONFIG SET, we may have slaves in WAIT_BGSAVE_START state without
an RDB background process currently active.

maodeyi/redis_lua,ramonsnir/redis,darksideofthemoo/redis-histogram,ksarch-saas/redis,ttuna/msot-redis,HunanTV/redis,jxwr/redis,xuzhezhaozhao/redis_reading,slfs007/mk-redis,darksideofthemoo/redis-histogram,HunanTV/redis,ttuna/msot-redis,splitice/redis,louisliangjun/redis,HunanTV/redis,xuzhezhaozhao/redis_reading,MSOpenTech/redis,ksarch-saas/redis,ramonsnir/redis,slfs007/mk-redis,himoca/redis,jxwr/redis,maodeyi/redis_lua,HunanTV/redis,darksideofthemoo/redis-histogram,ramonsnir/redis,MSOpenTech/redis,MSOpenTech/redis,splitice/redis,louisliangjun/redis,spearhead-ea/redis,MSOpenTech/redis,xuzhezhaozhao/redis_reading,spearhead-ea/redis,ksarch-saas/redis,darksideofthemoo/redis-histogram,spearhead-ea/redis,splitice/redis,ksarch-saas/redis,splitice/redis,himoca/redis,xuzhezhaozhao/redis_reading,louisliangjun/redis,himoca/redis,ttuna/msot-redis,slfs007/mk-redis,MSOpenTech/redis,ttuna/msot-redis,louisliangjun/redis,ttuna/msot-redis,maodeyi/redis_lua,jxwr/redis