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path: root/drivers/block/null_blk/main.c
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Diffstat (limited to 'drivers/block/null_blk/main.c')
-rw-r--r--drivers/block/null_blk/main.c25
1 files changed, 13 insertions, 12 deletions
diff --git a/drivers/block/null_blk/main.c b/drivers/block/null_blk/main.c
index 22a3cf7f32e2..3021d58ca51c 100644
--- a/drivers/block/null_blk/main.c
+++ b/drivers/block/null_blk/main.c
@@ -1464,19 +1464,13 @@ blk_status_t null_process_cmd(struct nullb_cmd *cmd, enum req_op op,
return BLK_STS_OK;
}
-static blk_status_t null_handle_cmd(struct nullb_cmd *cmd, sector_t sector,
- sector_t nr_sectors, enum req_op op)
+static void null_handle_cmd(struct nullb_cmd *cmd, sector_t sector,
+ sector_t nr_sectors, enum req_op op)
{
struct nullb_device *dev = cmd->nq->dev;
struct nullb *nullb = dev->nullb;
blk_status_t sts;
- if (test_bit(NULLB_DEV_FL_THROTTLED, &dev->flags)) {
- sts = null_handle_throttled(cmd);
- if (sts != BLK_STS_OK)
- return sts;
- }
-
if (op == REQ_OP_FLUSH) {
cmd->error = errno_to_blk_status(null_handle_flush(nullb));
goto out;
@@ -1493,7 +1487,6 @@ static blk_status_t null_handle_cmd(struct nullb_cmd *cmd, sector_t sector,
out:
nullb_complete_cmd(cmd);
- return BLK_STS_OK;
}
static enum hrtimer_restart nullb_bwtimer_fn(struct hrtimer *timer)
@@ -1724,8 +1717,6 @@ static blk_status_t null_queue_rq(struct blk_mq_hw_ctx *hctx,
cmd->fake_timeout = should_timeout_request(rq) ||
blk_should_fake_timeout(rq->q);
- blk_mq_start_request(rq);
-
if (should_requeue_request(rq)) {
/*
* Alternate between hitting the core BUSY path, and the
@@ -1738,6 +1729,15 @@ static blk_status_t null_queue_rq(struct blk_mq_hw_ctx *hctx,
return BLK_STS_OK;
}
+ if (test_bit(NULLB_DEV_FL_THROTTLED, &nq->dev->flags)) {
+ blk_status_t sts = null_handle_throttled(cmd);
+
+ if (sts != BLK_STS_OK)
+ return sts;
+ }
+
+ blk_mq_start_request(rq);
+
if (is_poll) {
spin_lock(&nq->poll_lock);
list_add_tail(&rq->queuelist, &nq->poll_list);
@@ -1747,7 +1747,8 @@ static blk_status_t null_queue_rq(struct blk_mq_hw_ctx *hctx,
if (cmd->fake_timeout)
return BLK_STS_OK;
- return null_handle_cmd(cmd, sector, nr_sectors, req_op(rq));
+ null_handle_cmd(cmd, sector, nr_sectors, req_op(rq));
+ return BLK_STS_OK;
}
static void null_queue_rqs(struct request **rqlist)