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authorMing Lei <ming.lei@redhat.com>2017-11-05 02:21:12 +0800
committerJens Axboe <axboe@kernel.dk>2017-11-04 12:31:08 -0600
commit88022d7201e96b43f1754b0358fc6bcd8dbdcde1 (patch)
treeec0b9e2d1227a7101040f954aef16511a5b6fa46 /block/blk-mq.h
parent826a70a08b1210bbfdbda812ab43eb986e25b5c2 (diff)
blk-mq: don't handle failure in .get_budget
It is enough to just check if we can get the budget via .get_budget(). And we don't need to deal with device state change in .get_budget(). For SCSI, one issue to be fixed is that we have to call scsi_mq_uninit_cmd() to free allocated ressources if SCSI device fails to handle the request. And it isn't enough to simply call blk_mq_end_request() to do that if this request is marked as RQF_DONTPREP. Fixes: 0df21c86bdbf(scsi: implement .get_budget and .put_budget for blk-mq) Signed-off-by: Ming Lei <ming.lei@redhat.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'block/blk-mq.h')
-rw-r--r--block/blk-mq.h5
1 files changed, 2 insertions, 3 deletions
diff --git a/block/blk-mq.h b/block/blk-mq.h
index 522b420dedc0..f97aceff76e9 100644
--- a/block/blk-mq.h
+++ b/block/blk-mq.h
@@ -147,14 +147,13 @@ static inline void blk_mq_put_dispatch_budget(struct blk_mq_hw_ctx *hctx)
q->mq_ops->put_budget(hctx);
}
-static inline blk_status_t blk_mq_get_dispatch_budget(
- struct blk_mq_hw_ctx *hctx)
+static inline bool blk_mq_get_dispatch_budget(struct blk_mq_hw_ctx *hctx)
{
struct request_queue *q = hctx->queue;
if (q->mq_ops->get_budget)
return q->mq_ops->get_budget(hctx);
- return BLK_STS_OK;
+ return true;
}
#endif