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-rw-r--r--ioctl.h15
1 files changed, 14 insertions, 1 deletions
diff --git a/ioctl.h b/ioctl.h
index 0df2444..771da23 100644
--- a/ioctl.h
+++ b/ioctl.h
@@ -216,7 +216,20 @@ struct btrfs_ioctl_feature_flags {
*/
struct btrfs_balance_args {
__u64 profiles;
- __u64 usage;
+
+ /*
+ * usage filter
+ * BTRFS_BALANCE_ARGS_USAGE with a single value means '0..N'
+ * BTRFS_BALANCE_ARGS_USAGE_RANGE - range syntax, min..max
+ */
+ union {
+ __u64 usage;
+ struct {
+ __u32 usage_min;
+ __u32 usage_max;
+ };
+ };
+
__u64 devid;
__u64 pstart;
__u64 pend;