[PATCH][resend] blk-cgroup: Lower minimum weight from 100 to 10.

[PATCH][resend] blk-cgroup: Lower minimum weight from 100 to 10.

[Justin TerAvest]

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>
---
 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 4ed7b5c..24314fd 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 ea4861b..57e7234 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
 
-- 
1.7.3.1

Re: [PATCH][resend] blk-cgroup: Lower minimum weight from 100 to 10.

[Jens Axboe]

On 2011-03-08 17:04, Justin TerAvest wrote:
> 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.

Thanks, applied.

-- 
Jens Axboe