From df457f845e5449be2e7d96668791f789b3770ac7 Mon Sep 17 00:00:00 2001
From: Justin TerAvest <teravest@google.com>
Date: Tue, 8 Mar 2011 19:45:00 +0100
Subject: [PATCH] blk-cgroup: Lower minimum weight from 100 to 10.
We've found that we still get good, useful isolation at weights this
low. I'd like to adjust the minimum so that any other changes can take
these values into account.
Signed-off-by: Justin TerAvest <teravest@google.com>
Acked-by: Vivek Goyal <vgoyal@redhat.com>
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
---
Documentation/cgroups/blkio-controller.txt | 2 +-
block/blk-cgroup.h | 2 +-
2 files changed, 2 insertions(+), 2 deletions(-)
diff --git a/Documentation/cgroups/blkio-controller.txt b/Documentation/cgroups/blkio-controller.txt
index d915c16df42c..465351d4cf85 100644
--- a/Documentation/cgroups/blkio-controller.txt
+++ b/Documentation/cgroups/blkio-controller.txt
@@ -140,7 +140,7 @@ Proportional weight policy files
- Specifies per cgroup weight. This is default weight of the group
on all the devices until and unless overridden by per device rule.
(See blkio.weight_device).
- Currently allowed range of weights is from 100 to 1000.
+ Currently allowed range of weights is from 10 to 1000.
- blkio.weight_device
- One can specify per cgroup per device rules using this interface.
diff --git a/block/blk-cgroup.h b/block/blk-cgroup.h
index ea4861bdd549..57e7234c5ae5 100644
--- a/block/blk-cgroup.h
+++ b/block/blk-cgroup.h
@@ -240,7 +240,7 @@ static inline char *blkg_path(struct blkio_group *blkg) { return NULL; }
#endif
-#define BLKIO_WEIGHT_MIN 100
+#define BLKIO_WEIGHT_MIN 10
#define BLKIO_WEIGHT_MAX 1000
#define BLKIO_WEIGHT_DEFAULT 500
--
GitLab