diff options
| author | Ming Lei <ming.lei@redhat.com> | 2017-11-16 08:08:44 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-12-16 10:33:55 +0100 |
| commit | 7b99b00cf3f07c26ca862ca7defbe370a1b2575b (patch) | |
| tree | b63bb78103ae4541c89dfa5139d7b489bbcb5c9f /block | |
| parent | 5a54dcc51a4a600953042686f6d6dfc81e3642d3 (diff) | |
block: wake up all tasks blocked in get_request()
[ Upstream commit 34d9715ac1edd50285168dd8d80c972739a4f6a4 ]
Once blk_set_queue_dying() is done in blk_cleanup_queue(), we call
blk_freeze_queue() and wait for q->q_usage_counter becoming zero. But
if there are tasks blocked in get_request(), q->q_usage_counter can
never become zero. So we have to wake up all these tasks in
blk_set_queue_dying() first.
Fixes: 3ef28e83ab157997 ("block: generic request_queue reference counting")
Signed-off-by: Ming Lei <ming.lei@redhat.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Sasha Levin <alexander.levin@verizon.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'block')
| -rw-r--r-- | block/blk-core.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/block/blk-core.c b/block/blk-core.c index 119658534dfd..f5f1a55703ae 100644 --- a/block/blk-core.c +++ b/block/blk-core.c @@ -526,8 +526,8 @@ void blk_set_queue_dying(struct request_queue *q) blk_queue_for_each_rl(rl, q) { if (rl->rq_pool) { - wake_up(&rl->wait[BLK_RW_SYNC]); - wake_up(&rl->wait[BLK_RW_ASYNC]); + wake_up_all(&rl->wait[BLK_RW_SYNC]); + wake_up_all(&rl->wait[BLK_RW_ASYNC]); } } } |