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| author | Ming Lei <tom.leiming@gmail.com> | 2017-03-27 20:06:57 +0800 |
|---|---|---|
| committer | Jens Axboe <axboe@fb.com> | 2017-03-29 08:03:42 -0600 |
| commit | 1671d522cdd9933dee7dddfcf9f62c561283824a (patch) | |
| tree | 075b8a1fb1a83a3301c6f928cfbdb815961de1f6 /block/blk-mq.c | |
| parent | 5ed61d3f08d44937859dc537c5362ca293c98b04 (diff) | |
| download | linux-1671d522cdd9933dee7dddfcf9f62c561283824a.tar.bz2 | |
block: rename blk_mq_freeze_queue_start()
As the .q_usage_counter is used by both legacy and
mq path, we need to block new I/O if queue becomes
dead in blk_queue_enter().
So rename it and we can use this function in both
paths.
Reviewed-by: Bart Van Assche <bart.vanassche@sandisk.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Ming Lei <tom.leiming@gmail.com>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Signed-off-by: Jens Axboe <axboe@fb.com>
Diffstat (limited to 'block/blk-mq.c')
| -rw-r--r-- | block/blk-mq.c | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/block/blk-mq.c b/block/blk-mq.c index baebd6c8210e..0ed00eca4d5a 100644 --- a/block/blk-mq.c +++ b/block/blk-mq.c @@ -68,7 +68,7 @@ static void blk_mq_hctx_clear_pending(struct blk_mq_hw_ctx *hctx, sbitmap_clear_bit(&hctx->ctx_map, ctx->index_hw); } -void blk_mq_freeze_queue_start(struct request_queue *q) +void blk_freeze_queue_start(struct request_queue *q) { int freeze_depth; @@ -78,7 +78,7 @@ void blk_mq_freeze_queue_start(struct request_queue *q) blk_mq_run_hw_queues(q, false); } } -EXPORT_SYMBOL_GPL(blk_mq_freeze_queue_start); +EXPORT_SYMBOL_GPL(blk_freeze_queue_start); void blk_mq_freeze_queue_wait(struct request_queue *q) { @@ -108,7 +108,7 @@ void blk_freeze_queue(struct request_queue *q) * no blk_unfreeze_queue(), and blk_freeze_queue() is not * exported to drivers as the only user for unfreeze is blk_mq. */ - blk_mq_freeze_queue_start(q); + blk_freeze_queue_start(q); blk_mq_freeze_queue_wait(q); } @@ -746,7 +746,7 @@ static void blk_mq_timeout_work(struct work_struct *work) * percpu_ref_tryget directly, because we need to be able to * obtain a reference even in the short window between the queue * starting to freeze, by dropping the first reference in - * blk_mq_freeze_queue_start, and the moment the last request is + * blk_freeze_queue_start, and the moment the last request is * consumed, marked by the instant q_usage_counter reaches * zero. */ @@ -2376,7 +2376,7 @@ static void blk_mq_queue_reinit_work(void) * take place in parallel. */ list_for_each_entry(q, &all_q_list, all_q_node) - blk_mq_freeze_queue_start(q); + blk_freeze_queue_start(q); list_for_each_entry(q, &all_q_list, all_q_node) blk_mq_freeze_queue_wait(q); |