btrfs: added helper functions to iterate backrefs

[pandora-kernel.git] / fs / btrfs / ioctl.h

diff --git a/fs/btrfs/ioctl.h b/fs/btrfs/ioctl.h
index ad1ea78..1857e38 100644 (file)
--- a/fs/btrfs/ioctl.h
+++ b/fs/btrfs/ioctl.h
@@ -193,6 +193,17 @@ struct btrfs_ioctl_space_args {
        struct btrfs_ioctl_space_info spaces[0];
 };
 
+struct btrfs_data_container {
+       __u32   bytes_left;     /* out -- bytes not needed to deliver output */
+       __u32   bytes_missing;  /* out -- additional bytes needed for result */
+       __u32   elem_cnt;       /* out */
+       __u32   elem_missed;    /* out */
+       union {
+               char    *str[0];        /* out */
+               __u64   val[0];         /* out */
+       };
+};
+
 #define BTRFS_IOC_SNAP_CREATE _IOW(BTRFS_IOCTL_MAGIC, 1, \
                                   struct btrfs_ioctl_vol_args)
 #define BTRFS_IOC_DEFRAG _IOW(BTRFS_IOCTL_MAGIC, 2, \