summaryrefslogtreecommitdiff
path: root/Documentation/block/null_blk.txt
AgeCommit message (Collapse)AuthorFilesLines
2019-07-15docs: block: convert to ReSTMauro Carvalho Chehab1-99/+0
Rename the block documentation files to ReST, add an index for them and adjust in order to produce a nice html output via the Sphinx build system. At its new index.rst, let's add a :orphan: while this is not linked to the main index.rst file, in order to avoid build warnings. Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
2019-04-09block: null: Add documentation for "zone_nr_conv" paramMinwoo Im1-0/+4
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 <chaitanya.kulkarni@wdc.com> Signed-off-by: Minwoo Im <minwoo.im.dev@gmail.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2019-01-06null_blk: add zoned config support informationJohn Pittman1-1/+2
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 <bvanassche@acm.org> Signed-off-by: John Pittman <jpittman@redhat.com> Added null_blk prefix to error message. Signed-off-by: Jens Axboe <axboe@kernel.dk>
2018-07-09null_blk: add zone supportMatias Bjørling1-0/+7
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 <matias.bjorling@wdc.com> Signed-off-by: Bart Van Assche <bart.vanassche@wdc.com> Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2018-05-25null_blk: add blocking description and remove lightnvmLiu Bo1-3/+6
- 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 <bo.liu@linux.alibaba.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2017-11-07null_blk: add an usage for shared tags in documentationMinwoo Im1-0/+5
Add usage explanation for a shared_tags, introduced by commit: 82f402fefa50 ("null_blk: add support for shared tags") Signed-off-by: Minwoo Im <minwoo.im.dev@gmail.com> Reworded slightly. Signed-off-by: Jens Axboe <axboe@kernel.dk>
2017-11-07null_blk: fix default values in documentationMinwoo Im1-2/+2
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 <minwoo.im.dev@gmail.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2017-10-13null_blk: add usage hints for no_schedweiping zhang1-0/+4
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>
2017-10-13null_blk: update usage hints for submit_queuesweiping zhang1-3/+3
update the range of submits_queues, and correct usage hints. Signed-off-by: weiping zhang <zhangweiping@didichuxing.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2016-11-16null_blk: add usage hints for NVMYasuaki Ishimatsu1-1/+1
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 <isimatu.yasuaki@jp.fujitsu.com> Massaged the text a bit. Signed-off-by: Jens Axboe <axboe@fb.com>
2015-11-16null_blk: register as a LightNVM deviceMatias Bjørling1-0/+3
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 <m@bjorling.me> Fix by Jens Axboe to remove unneeded slab cache and the following memory leak. Signed-off-by: Jens Axboe <axboe@fb.com>
2014-08-26Documentation: Fix null_blk parameter irq_mode to irqmodeFam Zheng1-2/+2
To match the real module parameter name we implemented. Signed-off-by: Fam Zheng <famz@redhat.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2013-12-21null_blk: set use_per_node_hctx param to falseMatias Bjørling1-4/+5
The defaults for the module is to instantiate itself with blk-mq and a submit queue for each CPU node in the system. To save resources, initialize instead with a single submit queue. Signed-off-by: Matias Bjorling <m@bjorling.me> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2013-12-21null_blk: corrections to documentationMatias Bjørling1-10/+10
Randy Dunlap reported a couple of grammar errors and unfortunate usages of socket/node/core. Signed-off-by: Matias Bjorling <m@bjorling.me> Acked-by: Randy Dunlap <rdunlap@infradead.org> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2013-12-19null_blk: documentationMatias Bjorling1-0/+71
Add description of module and its parameters. Signed-off-by: Matias Bjorling <m@bjorling.me> Signed-off-by: Jens Axboe <axboe@kernel.dk>
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-07 06:48:14 +0000