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>

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