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Commit bf9fc98b authored by Minwoo Im's avatar Minwoo Im Committed by Jens Axboe
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null_blk: add an usage for shared tags in documentation 



Add usage explanation for a shared_tags, introduced by commit:

82f402fe ("null_blk: add support for shared tags")

Signed-off-by: default avatarMinwoo Im <minwoo.im.dev@gmail.com>

Reworded slightly.

Signed-off-by: default avatarJens Axboe <axboe@kernel.dk>
parent e8815241

Documentation/block/null_blk.txt

+5 −0
Original line number Diff line number Diff line
@@ -77,3 +77,8 @@ use_lightnvm=[0/1]: Default: 0 
no_sched=[0/1]: Default: 0

  0: nullb* use default blk-mq io scheduler.

  1: nullb* doesn't use io scheduler.



shared_tags=[0/1]: Default: 0

  0: Tag set is not shared.

  1: Tag set shared between devices for blk-mq. Only makes sense with

     nr_devices > 1, otherwise there's no tag set to share.