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| author | Keith Busch <keith.busch@intel.com> | 2014-12-19 17:54:14 -0700 |
|---|---|---|
| committer | Jens Axboe <axboe@fb.com> | 2014-12-20 10:34:15 -0700 |
| commit | b4c6a028774bcf3f20ed1e66c27a05aa51a8cf55 (patch) | |
| tree | 06e839b2bd07bb335c86c9798fb9cee53cc8c6ab /include/linux/blk-mq.h | |
| parent | c76541a932113faa5b3be65a3f0a3d4ebbc86aeb (diff) | |
| download | lwn-b4c6a028774bcf3f20ed1e66c27a05aa51a8cf55.tar.gz lwn-b4c6a028774bcf3f20ed1e66c27a05aa51a8cf55.zip | |
blk-mq: Export freeze/unfreeze functions
Let drivers prevent entering a queue that isn't available.
Signed-off-by: Keith Busch <keith.busch@intel.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
Diffstat (limited to 'include/linux/blk-mq.h')
| -rw-r--r-- | include/linux/blk-mq.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/blk-mq.h b/include/linux/blk-mq.h index 8aded9ab2e4e..3b43f509432c 100644 --- a/include/linux/blk-mq.h +++ b/include/linux/blk-mq.h @@ -212,6 +212,8 @@ void blk_mq_start_stopped_hw_queues(struct request_queue *q, bool async); void blk_mq_delay_queue(struct blk_mq_hw_ctx *hctx, unsigned long msecs); void blk_mq_tag_busy_iter(struct blk_mq_hw_ctx *hctx, busy_iter_fn *fn, void *priv); +void blk_mq_unfreeze_queue(struct request_queue *q); +void blk_mq_freeze_queue_start(struct request_queue *q); /* * Driver command data is immediately after the request. So subtract request |