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| author |   Jens Axboe <axboe@fb.com> | 2016-12-08 13:19:30 -0700 |
|---|---|---|
| committer | Jens Axboe <axboe@fb.com> | 2016-12-09 09:03:02 -0700 |
| commit | ae911c5e796d51cb2d1ed3a55e73b9cc88d176cf (patch) | |
| tree | 8d13dbeff76c57c2f61a19a13e64dbda40c04b9c | |
| parent | block: improve handling of the magic discard payload (diff) | |
| download | linux-dev-ae911c5e796d51cb2d1ed3a55e73b9cc88d176cf.tar.xz linux-dev-ae911c5e796d51cb2d1ed3a55e73b9cc88d176cf.zip | |
blk-mq: add blk_mq_start_stopped_hw_queue()
We have a variant for all hardware queues, but not one for a single
hardware queue.
Signed-off-by: Jens Axboe <axboe@fb.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
| -rw-r--r-- | block/blk-mq.c | 19 | ||||
| -rw-r--r-- | include/linux/blk-mq.h | 1 |
2 files changed, 13 insertions, 7 deletions
diff --git a/block/blk-mq.c b/block/blk-mq.c index 90db5b490df9..c993476b630f 100644 --- a/block/blk-mq.c +++ b/block/blk-mq.c @@ -1064,18 +1064,23 @@ void blk_mq_start_hw_queues(struct request_queue *q) } EXPORT_SYMBOL(blk_mq_start_hw_queues); +void blk_mq_start_stopped_hw_queue(struct blk_mq_hw_ctx *hctx, bool async) +{ + if (!blk_mq_hctx_stopped(hctx)) + return; + + clear_bit(BLK_MQ_S_STOPPED, &hctx->state); + blk_mq_run_hw_queue(hctx, async); +} +EXPORT_SYMBOL_GPL(blk_mq_start_stopped_hw_queue); + void blk_mq_start_stopped_hw_queues(struct request_queue *q, bool async) { struct blk_mq_hw_ctx *hctx; int i; - queue_for_each_hw_ctx(q, hctx, i) { - if (!blk_mq_hctx_stopped(hctx)) - continue; - - clear_bit(BLK_MQ_S_STOPPED, &hctx->state); - blk_mq_run_hw_queue(hctx, async); - } + queue_for_each_hw_ctx(q, hctx, i) + blk_mq_start_stopped_hw_queue(hctx, async); } EXPORT_SYMBOL(blk_mq_start_stopped_hw_queues); diff --git a/include/linux/blk-mq.h b/include/linux/blk-mq.h index 35a0af5ede6d..87e404aae267 100644 --- a/include/linux/blk-mq.h +++ b/include/linux/blk-mq.h @@ -231,6 +231,7 @@ void blk_mq_stop_hw_queue(struct blk_mq_hw_ctx *hctx); void blk_mq_start_hw_queue(struct blk_mq_hw_ctx *hctx); void blk_mq_stop_hw_queues(struct request_queue *q); void blk_mq_start_hw_queues(struct request_queue *q); +void blk_mq_start_stopped_hw_queue(struct blk_mq_hw_ctx *hctx, bool async); void blk_mq_start_stopped_hw_queues(struct request_queue *q, bool async); void blk_mq_run_hw_queues(struct request_queue *q, bool async); void blk_mq_delay_queue(struct blk_mq_hw_ctx *hctx, unsigned long msecs); |