diff options
| -rw-r--r-- | block/throttle-groups.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/block/throttle-groups.c b/block/throttle-groups.c index e297b04e17..d46c56b31e 100644 --- a/block/throttle-groups.c +++ b/block/throttle-groups.c @@ -221,6 +221,15 @@ static ThrottleGroupMember *next_throttle_token(ThrottleGroupMember *tgm, ThrottleGroup *tg = container_of(ts, ThrottleGroup, ts); ThrottleGroupMember *token, *start; + /* If this member has its I/O limits disabled then it means that + * it's being drained. Skip the round-robin search and return tgm + * immediately if it has pending requests. Otherwise we could be + * forcing it to wait for other member's throttled requests. */ + if (tgm_has_pending_reqs(tgm, is_write) && + atomic_read(&tgm->io_limits_disabled)) { + return tgm; + } + start = token = tg->tokens[is_write]; /* get next bs round in round robin style */ |