Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 6723d8dc authored by Liu Bo's avatar Liu Bo Committed by Jens Axboe
Browse files

null_blk: add blocking description and remove lightnvm 



- The description of 'blocking' is missing in null_blk.txt

- The 'lightnvm' parameter has been removed in null_blk.c

This updates both in null_blk.txt.

Signed-off-by: default avatarLiu Bo <bo.liu@linux.alibaba.com>
Signed-off-by: default avatarJens Axboe <axboe@kernel.dk>
parent 5657a819

Documentation/block/null_blk.txt

+6 −3
Original line number Diff line number Diff line
@@ -71,13 +71,16 @@ use_per_node_hctx=[0/1]: Default: 0 
  1: The multi-queue block layer is instantiated with a hardware dispatch

     queue for each CPU node in the system.



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.



blocking=[0/1]: Default: 0

  0: Register as a non-blocking blk-mq driver device.

  1: Register as a blocking blk-mq driver device, null_blk will set

     the BLK_MQ_F_BLOCKING flag, indicating that it sometimes/always

     needs to block in its ->queue_rq() function.



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