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null_blk: create a helper for req completion

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This patch creates a helper function for handling the request
completion in the null_handle_cmd().

Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Chaitanya Kulkarni 2019-08-22 21:45:19 -07:00 committed by Jens Axboe
parent fceb5d1b19
commit a3d7d67403
1 changed files with 27 additions and 22 deletions
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49
drivers/block/null_blk_main.c
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@ -1182,6 +1182,32 @@ static inline blk_status_t null_handle_memory_backed(struct nullb_cmd *cmd,
return errno_to_blk_status(err);
}
static inline void nullb_complete_cmd(struct nullb_cmd *cmd)
{
/* Complete IO by inline, softirq or timer */
switch (cmd->nq->dev->irqmode) {
case NULL_IRQ_SOFTIRQ:
switch (cmd->nq->dev->queue_mode) {
case NULL_Q_MQ:
blk_mq_complete_request(cmd->rq);
break;
case NULL_Q_BIO:
/*
* XXX: no proper submitting cpu information available.
*/
end_cmd(cmd);
break;
}
break;
case NULL_IRQ_NONE:
end_cmd(cmd);
break;
case NULL_IRQ_TIMER:
null_cmd_end_timer(cmd);
break;
}
}
static blk_status_t null_handle_cmd(struct nullb_cmd *cmd, sector_t sector,
sector_t nr_sectors, enum req_opf op)
{
@ -1213,28 +1239,7 @@ static blk_status_t null_handle_cmd(struct nullb_cmd *cmd, sector_t sector,
cmd->error = null_handle_zoned(cmd, op, sector, nr_sectors);
out:
/* Complete IO by inline, softirq or timer */
switch (dev->irqmode) {
case NULL_IRQ_SOFTIRQ:
switch (dev->queue_mode) {
case NULL_Q_MQ:
blk_mq_complete_request(cmd->rq);
break;
case NULL_Q_BIO:
/*
* XXX: no proper submitting cpu information available.
*/
end_cmd(cmd);
break;
}
break;
case NULL_IRQ_NONE:
end_cmd(cmd);
break;
case NULL_IRQ_TIMER:
null_cmd_end_timer(cmd);
break;
}
nullb_complete_cmd(cmd);
return BLK_STS_OK;
}