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-rw-r--r--Documentation/ABI/testing/sysfs-class-bdi9
1 files changed, 8 insertions, 1 deletions
diff --git a/Documentation/ABI/testing/sysfs-class-bdi b/Documentation/ABI/testing/sysfs-class-bdi
index b9e8a9368dc6..c55e811ca180 100644
--- a/Documentation/ABI/testing/sysfs-class-bdi
+++ b/Documentation/ABI/testing/sysfs-class-bdi
@@ -49,4 +49,11 @@ min_ratio (read-write)
Minimal percentage of global dirty threshold allocated to this
bdi. If the value written to this file would make the the sum
of all min_ratio values exceed 100, then EINVAL is returned.
- The default is zero
+ If min_ratio would become larger than the current max_ratio,
+ then also EINVAL is returned. The default is zero
+
+max_ratio (read-write)
+
+ Maximal percentage of global dirty threshold allocated to this
+ bdi. If max_ratio would become smaller than the current
+ min_ratio, then EINVAL is returned. The default is 100