diff options
| author | Ming Lei <ming.lei@redhat.com> | 2017-11-16 08:08:44 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-12-14 09:28:23 +0100 |
| commit | 1a5a4c6e868faf01cda18538ea72c6586dfee647 (patch) | |
| tree | 86d9e62bafb0c2770b9329cd04cc39140fff34aa | |
| parent | c31bfe7de24387dfc0b4c3c1a34f4f8d1554c907 (diff) | |
| download | linux-stable-1a5a4c6e868faf01cda18538ea72c6586dfee647.tar.gz linux-stable-1a5a4c6e868faf01cda18538ea72c6586dfee647.tar.bz2 linux-stable-1a5a4c6e868faf01cda18538ea72c6586dfee647.zip | |
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>
| -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 b1c76aa73492..23daf40be371 100644 --- a/block/blk-core.c +++ b/block/blk-core.c @@ -527,8 +527,8 @@ 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]); } } } |