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authorJens Axboe <axboe@fb.com>2017-01-27 01:00:47 -0700
committerJens Axboe <axboe@fb.com>2017-01-27 09:03:14 -0700
commitbd6737f1ae92e2f1c6e8362efe96dbe7f18fa07d (patch)
treeffed03cc3bd01143a8e43d6daca2288836a4a9e3 /block/blk-mq.h
parentf73f44eb00cb136990cfb7d40e436c13d7669ec8 (diff)
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blk-mq-sched: add flush insertion into blk_mq_sched_insert_request()
Instead of letting the caller check this and handle the details of inserting a flush request, put the logic in the scheduler insertion function. This fixes direct flush insertion outside of the usual make_request_fn calls, like from dm via blk_insert_cloned_request(). Signed-off-by: Jens Axboe <axboe@fb.com>
Diffstat (limited to 'block/blk-mq.h')
-rw-r--r--block/blk-mq.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/block/blk-mq.h b/block/blk-mq.h
index 077a4003f1fd..57cdbf6c0cee 100644
--- a/block/blk-mq.h
+++ b/block/blk-mq.h
@@ -34,6 +34,8 @@ void blk_mq_wake_waiters(struct request_queue *q);
bool blk_mq_dispatch_rq_list(struct blk_mq_hw_ctx *, struct list_head *);
void blk_mq_flush_busy_ctxs(struct blk_mq_hw_ctx *hctx, struct list_head *list);
bool blk_mq_hctx_has_pending(struct blk_mq_hw_ctx *hctx);
+bool blk_mq_get_driver_tag(struct request *rq, struct blk_mq_hw_ctx **hctx,
+ bool wait);
/*
* Internal helpers for allocating/freeing the request map