diff options
| author | weiping zhang <zhangweiping@didichuxing.com> | 2017-10-14 00:26:54 +0800 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2017-10-13 10:52:39 -0600 |
| commit | fc186311f2233bb3f69f22b96babdf16a57c88a9 (patch) | |
| tree | 97adaec4c4f9229a959a4e262309ce5bbe5eeda0 /Documentation/block | |
| parent | 23c4490d2b7f78a855f9c5675e26735fb61afe84 (diff) | |
null_blk: add usage hints for no_sched
This parameter provide an option to disable io scheduler when nullb*
in multi-queue mode.
Signed-off-by: weiping zhang <zhangweiping@didichuxing.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'Documentation/block')
| -rw-r--r-- | Documentation/block/null_blk.txt | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/Documentation/block/null_blk.txt b/Documentation/block/null_blk.txt index 1f8d92c70458..b7161c8e70f2 100644 --- a/Documentation/block/null_blk.txt +++ b/Documentation/block/null_blk.txt @@ -73,3 +73,7 @@ use_per_node_hctx=[0/1]: Default: 0 use_lightnvm=[0/1]: Default: 0 Register device with LightNVM. Requires blk-mq and CONFIG_NVM to be enabled. + +no_sched=[0/1]: Default: 0 + 0: nullb* use default blk-mq io scheduler. + 1: nullb* doesn't use io scheduler. |