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| author | Ming Lei <ming.lei@redhat.com> | 2017-11-04 19:21:12 +0100 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2017-11-04 19:31:08 +0100 |
| commit | 88022d7201e96b43f1754b0358fc6bcd8dbdcde1 (patch) | |
| tree | ec0b9e2d1227a7101040f954aef16511a5b6fa46 /block/blk-mq.h | |
| parent | SCSI: don't get target/host busy_count in scsi_mq_get_budget() (diff) | |
| download | linux-88022d7201e96b43f1754b0358fc6bcd8dbdcde1.tar.xz linux-88022d7201e96b43f1754b0358fc6bcd8dbdcde1.zip | |
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.h | 5 |
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 |