elevator: printk a warning if switching to a new io scheduler fails
printk a warning to indicate that the io scheduler has been set to none if switching to a new io scheduler fails. Suggested-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jinlong Chen <nickyc975@zju.edu.cn> Reviewed-by: Christoph Hellwig <hch@lst.de> Link: https://lore.kernel.org/r/d51ed0fb457db7a4f9cbb0dbce36d534e22be457.1669126766.git.nickyc975@zju.edu.cn Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
parent
ac1171bd2c
commit
e0cca8bc9c
block
|
@ -683,6 +683,12 @@ int elevator_switch(struct request_queue *q, struct elevator_type *new_e)
|
|||
out_unfreeze:
|
||||
blk_mq_unquiesce_queue(q);
|
||||
blk_mq_unfreeze_queue(q);
|
||||
|
||||
if (ret) {
|
||||
pr_warn("elv: switch to \"%s\" failed, falling back to \"none\"\n",
|
||||
new_e->elevator_name);
|
||||
}
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
|
|
Loading…
Reference in New Issue