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blk-throttle: add configure option for new .low interface 

As discussed in LSF, add configure option for the interface and mark it
as experimental, so people can try/test.

Signed-off-by: Shaohua Li <shli@fb.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
This commit is contained in:
Shaohua Li 2017-03-27 10:51:31 -07:00 committed by Jens Axboe
parent 9f626e372a
commit 327ffb9b37
1 changed files with 12 additions and 0 deletions
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block/Kconfig
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@ -115,6 +115,18 @@ config BLK_DEV_THROTTLING
See Documentation/cgroups/blkio-controller.txt for more information. See Documentation/cgroups/blkio-controller.txt for more information.
config BLK_DEV_THROTTLING_LOW
bool "Block throttling .low limit interface support (EXPERIMENTAL)"
depends on BLK_DEV_THROTTLING
default n
---help---
Add .low limit interface for block throttling. The low limit is a best
effort limit to prioritize cgroups. Depending on the setting, the limit
can be used to protect cgroups in terms of bandwidth/iops and better
utilize disk resource.
Note, this is an experimental interface and could be changed someday.
config BLK_CMDLINE_PARSER config BLK_CMDLINE_PARSER
bool "Block device command line partition parser" bool "Block device command line partition parser"
default n default n