BMC/Intel-BMC/linux.git/Documentation/block/null_blk.txt, branch dev-5.2

block: null: Add documentation for "zone_nr_conv" param

2019-04-09T14:18:23+00:00

zone_nr_conv module parameter was introduced by a commit ea2c18e1("null_blk: Add conventional zone configuration for zoned support"). This patch describes "zone_nr_conv" module parameter to the document. Reviewed-by: Chaitanya Kulkarni Signed-off-by: Minwoo Im Signed-off-by: Jens Axboe

null_blk: add zoned config support information

2019-01-06T17:58:27+00:00

If the kernel is built without CONFIG_BLK_DEV_ZONED, a modprobe of the null_blk driver with zoned=1 fails with 'Invalid argument'. This can be confusing to users, prompting a search as to why the parameter is invalid. To assist in that search, add a bit more information to the failure, additionally adding to the documentation that CONFIG_BLK_DEV_ZONED is needed for zoned=1. Reviewed-by: Bart Van Assche Signed-off-by: John Pittman Added null_blk prefix to error message. Signed-off-by: Jens Axboe

null_blk: add zone support

2018-07-09T15:07:55+00:00

Adds support for exposing a null_blk device through the zone device interface. The interface is managed with the parameters zoned and zone_size. If zoned is set, the null_blk instance registers as a zoned block device. The zone_size parameter defines how big each zone will be. Signed-off-by: Matias Bjørling Signed-off-by: Bart Van Assche Signed-off-by: Damien Le Moal Signed-off-by: Jens Axboe

null_blk: add blocking description and remove lightnvm

2018-05-25T14:51:58+00:00

- 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: Liu Bo Signed-off-by: Jens Axboe

null_blk: add an usage for shared tags in documentation

2017-11-07T16:25:37+00:00

Add usage explanation for a shared_tags, introduced by commit: 82f402fefa50 ("null_blk: add support for shared tags") Signed-off-by: Minwoo Im Reworded slightly. Signed-off-by: Jens Axboe

null_blk: fix default values in documentation

2017-11-07T16:24:06+00:00

null_blk.c has initial value of (1) nr_devices as 1. (2) completion_nsec as 10,000ns, not 10.000ns. documentation should be updated for fixes above. Signed-off-by: Minwoo Im Signed-off-by: Jens Axboe

null_blk: add usage hints for no_sched

2017-10-13T16:52:39+00:00

This parameter provide an option to disable io scheduler when nullb* in multi-queue mode. Signed-off-by: weiping zhang Signed-off-by: Jens Axboe

null_blk: update usage hints for submit_queues

2017-10-13T16:52:37+00:00

update the range of submits_queues, and correct usage hints. Signed-off-by: weiping zhang Signed-off-by: Jens Axboe

null_blk: add usage hints for NVM

2016-11-16T15:26:11+00:00

If CONFIG_NVM is disabled, loading null_block module with use_lightnvm=1 fails. But there are no messages and documents related to the failure. Add the appropriate error message. Signed-off-by: Yasuaki Ishimatsu Massaged the text a bit. Signed-off-by: Jens Axboe

null_blk: register as a LightNVM device

2015-11-16T22:22:28+00:00

Add support for registering as a LightNVM device. This allows us to evaluate the performance of the LightNVM subsystem. In /drivers/Makefile, LightNVM is moved above block device drivers to make sure that the LightNVM media managers have been initialized before drivers under /drivers/block are initialized. Signed-off-by: Matias Bjørling Fix by Jens Axboe to remove unneeded slab cache and the following memory leak. Signed-off-by: Jens Axboe