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| author | Jens Axboe <axboe@fb.com> | 2014-05-20 11:49:02 -0600 |
|---|---|---|
| committer | Jens Axboe <axboe@fb.com> | 2014-05-20 11:49:02 -0600 |
| commit | e3a2b3f931f59d5284abd13faf8bded726884ffd (patch) | |
| tree | f5426a4745996e95afc2f01f826e846710929dc2 /include/linux/blk-mq.h | |
| parent | 64b14519e5913e8d4de9f2e5d9ef59abba3ed83d (diff) | |
| download | lwn-e3a2b3f931f59d5284abd13faf8bded726884ffd.tar.gz lwn-e3a2b3f931f59d5284abd13faf8bded726884ffd.zip | |
blk-mq: allow changing of queue depth through sysfs
For request_fn based devices, the block layer exports a 'nr_requests'
file through sysfs to allow adjusting of queue depth on the fly.
Currently this returns -EINVAL for blk-mq, since it's not wired up.
Wire this up for blk-mq, so that it now also always dynamic
adjustments of the allowed queue depth for any given block device
managed by blk-mq.
Signed-off-by: Jens Axboe <axboe@fb.com>
Diffstat (limited to 'include/linux/blk-mq.h')
| -rw-r--r-- | include/linux/blk-mq.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/include/linux/blk-mq.h b/include/linux/blk-mq.h index a06ca7b5ea05..f45424453338 100644 --- a/include/linux/blk-mq.h +++ b/include/linux/blk-mq.h @@ -63,7 +63,7 @@ struct blk_mq_hw_ctx { struct blk_mq_tag_set { struct blk_mq_ops *ops; unsigned int nr_hw_queues; - unsigned int queue_depth; + unsigned int queue_depth; /* max hw supported */ unsigned int reserved_tags; unsigned int cmd_size; /* per-request extra data */ int numa_node; |