These changes are the raw update to linux-4.4.6-rt14. Kernel sources

[kvmfornfv.git] / kernel / include / uapi / linux / btrfs.h

diff --git a/kernel/include/uapi/linux/btrfs.h b/kernel/include/uapi/linux/btrfs.h
index b6dec05..dea8931 100644 (file)
--- a/kernel/include/uapi/linux/btrfs.h
+++ b/kernel/include/uapi/linux/btrfs.h
@@ -206,7 +206,13 @@ struct btrfs_ioctl_feature_flags {
  */
 struct btrfs_balance_args {
        __u64 profiles;
-       __u64 usage;
+       union {
+               __le64 usage;
+               struct {
+                       __le32 usage_min;
+                       __le32 usage_max;
+               };
+       };
        __u64 devid;
        __u64 pstart;
        __u64 pend;
@@ -217,8 +223,27 @@ struct btrfs_balance_args {
 
        __u64 flags;
 
-       __u64 limit;            /* limit number of processed chunks */
-       __u64 unused[7];
+       /*
+        * BTRFS_BALANCE_ARGS_LIMIT with value 'limit'
+        * BTRFS_BALANCE_ARGS_LIMIT_RANGE - the extend version can use minimum
+        * and maximum
+        */
+       union {
+               __u64 limit;            /* limit number of processed chunks */
+               struct {
+                       __u32 limit_min;
+                       __u32 limit_max;
+               };
+       };
+
+       /*
+        * Process chunks that cross stripes_min..stripes_max devices,
+        * BTRFS_BALANCE_ARGS_STRIPES_RANGE
+        */
+       __le32 stripes_min;
+       __le32 stripes_max;
+
+       __u64 unused[6];
 } __attribute__ ((__packed__));
 
 /* report balance progress to userspace */