Btrfs: qgroup implementation and prototypes

Signed-off-by: Arne Jansen <sensille@gmx.net>
Signed-off-by: Jan Schmidt <list.btrfs@jan-o-sch.net>

1 files changed, 24 insertions, 0 deletions

diff --git a/fs/btrfs/ioctl.h b/fs/btrfs/ioctl.h
index e440aa653c30..a8a2230f4c5c 100644
--- a/fs/btrfs/ioctl.h
+++ b/fs/btrfs/ioctl.h
@@ -35,6 +35,30 @@ struct btrfs_ioctl_vol_args {
 #define BTRFS_FSID_SIZE 16
 #define BTRFS_UUID_SIZE 16
 
+#define BTRFS_QGROUP_INHERIT_SET_LIMITS (1ULL << 0)
+
+struct btrfs_qgroup_limit {
+        __u64   flags;
+        __u64   max_rfer;
+        __u64   max_excl;
+        __u64   rsv_rfer;
+        __u64   rsv_excl;
+};
+
+struct btrfs_qgroup_inherit {
+        __u64   flags;
+        __u64   num_qgroups;
+        __u64   num_ref_copies;
+        __u64   num_excl_copies;
+        struct btrfs_qgroup_limit lim;
+        __u64   qgroups[0];
+};
+
+struct btrfs_ioctl_qgroup_limit_args {
+        __u64   qgroupid;
+        struct btrfs_qgroup_limit lim;
+};
+
 #define BTRFS_SUBVOL_NAME_MAX 4039
 struct btrfs_ioctl_vol_args_v2 {
         __s64 fd;