diff options
| -rw-r--r-- | block/blk-core.c | 12 | ||||
| -rw-r--r-- | block/blk-throttle.c | 4 |
2 files changed, 10 insertions, 6 deletions
diff --git a/block/blk-core.c b/block/blk-core.c index 98ddef43009..7713c73d959 100644 --- a/block/blk-core.c +++ b/block/blk-core.c @@ -372,8 +372,7 @@ void blk_drain_queue(struct request_queue *q, bool drain_all) if (q->elevator) elv_drain_elevator(q); - if (drain_all) - blk_throtl_drain(q); + blk_throtl_drain(q); /* * This function might be called on a queue which failed @@ -415,8 +414,8 @@ void blk_drain_queue(struct request_queue *q, bool drain_all) * * In bypass mode, only the dispatch FIFO queue of @q is used. This * function makes @q enter bypass mode and drains all requests which were - * issued before. On return, it's guaranteed that no request has ELVPRIV - * set. + * throttled or issued before. On return, it's guaranteed that no request + * is being throttled or has ELVPRIV set. */ void blk_queue_bypass_start(struct request_queue *q) { @@ -461,6 +460,11 @@ void blk_cleanup_queue(struct request_queue *q) queue_flag_set_unlocked(QUEUE_FLAG_DEAD, q); spin_lock_irq(lock); + + /* dead queue is permanently in bypass mode till released */ + q->bypass_depth++; + queue_flag_set(QUEUE_FLAG_BYPASS, q); + queue_flag_set(QUEUE_FLAG_NOMERGES, q); queue_flag_set(QUEUE_FLAG_NOXMERGES, q); queue_flag_set(QUEUE_FLAG_DEAD, q); diff --git a/block/blk-throttle.c b/block/blk-throttle.c index 5eed6a76721..702c0e64e09 100644 --- a/block/blk-throttle.c +++ b/block/blk-throttle.c @@ -310,7 +310,7 @@ static struct throtl_grp * throtl_get_tg(struct throtl_data *td) struct request_queue *q = td->queue; /* no throttling for dead queue */ - if (unlikely(blk_queue_dead(q))) + if (unlikely(blk_queue_bypass(q))) return NULL; rcu_read_lock(); @@ -335,7 +335,7 @@ static struct throtl_grp * throtl_get_tg(struct throtl_data *td) spin_lock_irq(q->queue_lock); /* Make sure @q is still alive */ - if (unlikely(blk_queue_dead(q))) { + if (unlikely(blk_queue_bypass(q))) { kfree(tg); return NULL; } |