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Message-ID: <e3d3888887f9c89e32314961a0e06434b4c79944.1490634565.git.shli@fb.com>
Date: Mon, 27 Mar 2017 10:51:31 -0700
From: Shaohua Li <shli@...com>
To: <linux-kernel@...r.kernel.org>, <linux-block@...r.kernel.org>
CC: <axboe@...nel.dk>, <tj@...nel.org>,
Vivek Goyal <vgoyal@...hat.com>, <jmoyer@...hat.com>,
<Kernel-team@...com>
Subject: [PATCH V7 03/18] 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@...com>
---
block/Kconfig | 12 ++++++++++++
1 file changed, 12 insertions(+)
diff --git a/block/Kconfig b/block/Kconfig
index e9f780f..89cd28f 100644
--- a/block/Kconfig
+++ b/block/Kconfig
@@ -115,6 +115,18 @@ config BLK_DEV_THROTTLING
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
bool "Block device command line partition parser"
default n
--
2.9.3
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