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authorKeith Busch <keith.busch@intel.com>2015-01-07 18:55:43 -0700
committerJens Axboe <axboe@fb.com>2015-01-08 08:55:27 -0700
commit973c01919bce7e3559b62a856b29211ec5ac325c (patch)
treea2a3661f5c3cdef068b5e7a11709096f77b401f9 /block
parent3fd5940cb2e47a61dcff4108f39be4c72cb4dace (diff)
downloadkernel-973c01919bce7e3559b62a856b29211ec5ac325c.tar.gz
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>
Diffstat (limited to 'block')
-rw-r--r--block/blk-mq.c6
1 files changed, 6 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;