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| author | Keith Busch <keith.busch@intel.com> | 2017-02-10 18:15:51 -0500 |
|---|---|---|
| committer | Jens Axboe <axboe@fb.com> | 2017-02-22 13:34:00 -0700 |
| commit | f33447b90e96076483525b21cc4e0a8977cdd07c (patch) | |
| tree | 74e19e4239a9e1b3191ea3693c17aaddc4f03c42 /drivers/nvme | |
| parent | 6db28eda266052f86a6b402422de61eeb7d2e351 (diff) | |
| download | blackbird-op-linux-f33447b90e96076483525b21cc4e0a8977cdd07c.tar.gz blackbird-op-linux-f33447b90e96076483525b21cc4e0a8977cdd07c.zip | |
nvme/core: Fix race kicking freed request_queue
If a namespace has already been marked dead, we don't want to kick the
request_queue again since we may have just freed it from another thread.
Signed-off-by: Keith Busch <keith.busch@intel.com>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Sagi Grimberg <sagi@grimberg.me>
Signed-off-by: Jens Axboe <axboe@fb.com>
Diffstat (limited to 'drivers/nvme')
| -rw-r--r-- | drivers/nvme/host/core.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/drivers/nvme/host/core.c b/drivers/nvme/host/core.c index 849e85847ad4..25ec4e585220 100644 --- a/drivers/nvme/host/core.c +++ b/drivers/nvme/host/core.c @@ -2333,9 +2333,9 @@ void nvme_kill_queues(struct nvme_ctrl *ctrl) * Revalidating a dead namespace sets capacity to 0. This will * end buffered writers dirtying pages that can't be synced. */ - if (ns->disk && !test_and_set_bit(NVME_NS_DEAD, &ns->flags)) - revalidate_disk(ns->disk); - + if (!ns->disk || test_and_set_bit(NVME_NS_DEAD, &ns->flags)) + continue; + revalidate_disk(ns->disk); blk_set_queue_dying(ns->queue); blk_mq_abort_requeue_list(ns->queue); blk_mq_start_stopped_hw_queues(ns->queue, true); |
