diff options
| author | Keith Busch <keith.busch@intel.com> | 2015-01-07 18:55:43 -0700 |
|---|---|---|
| committer | Jens Axboe <axboe@fb.com> | 2015-01-08 08:55:27 -0700 |
| commit | 973c01919bce7e3559b62a856b29211ec5ac325c (patch) | |
| tree | a2a3661f5c3cdef068b5e7a11709096f77b401f9 | |
| parent | 3fd5940cb2e47a61dcff4108f39be4c72cb4dace (diff) | |
blk-mq: Export if requests were started
Drivers can iterate over all allocated request tags, but their callback
needs a way to know if the driver started the request in the first place.
Signed-off-by: Keith Busch <keith.busch@intel.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
| -rw-r--r-- | block/blk-mq.c | 6 | ||||
| -rw-r--r-- | include/linux/blk-mq.h | 1 |
2 files changed, 7 insertions, 0 deletions
diff --git a/block/blk-mq.c b/block/blk-mq.c index aefed96369dd..ce4811667d36 100644 --- a/block/blk-mq.c +++ b/block/blk-mq.c @@ -404,6 +404,12 @@ void blk_mq_complete_request(struct request *rq) } EXPORT_SYMBOL(blk_mq_complete_request); +int blk_mq_request_started(struct request *rq) +{ + return test_bit(REQ_ATOM_STARTED, &rq->atomic_flags); +} +EXPORT_SYMBOL_GPL(blk_mq_request_started); + void blk_mq_start_request(struct request *rq) { struct request_queue *q = rq->q; diff --git a/include/linux/blk-mq.h b/include/linux/blk-mq.h index d0de259e92b2..addf8a19d806 100644 --- a/include/linux/blk-mq.h +++ b/include/linux/blk-mq.h @@ -194,6 +194,7 @@ static inline u16 blk_mq_unique_tag_to_tag(u32 unique_tag) struct blk_mq_hw_ctx *blk_mq_map_queue(struct request_queue *, const int ctx_index); struct blk_mq_hw_ctx *blk_mq_alloc_single_hw_queue(struct blk_mq_tag_set *, unsigned int, int); +int blk_mq_request_started(struct request *rq); void blk_mq_start_request(struct request *rq); void blk_mq_end_request(struct request *rq, int error); void __blk_mq_end_request(struct request *rq, int error); |