1 files changed, 5 insertions, 2 deletions

diff --git a/fs/btrfs/ioctl.h b/fs/btrfs/ioctl.h
index 989ba8a01215..78049ea208db 100644
--- a/fs/btrfs/ioctl.h
+++ b/fs/btrfs/ioctl.h
@@ -22,9 +22,10 @@
 
 #define BTRFS_IOCTL_MAGIC 0x94
 #define BTRFS_VOL_NAME_MAX 255
-#define BTRFS_PATH_NAME_MAX 4095
+#define BTRFS_PATH_NAME_MAX 3072
 
 struct btrfs_ioctl_vol_args {
+        __s64 fd;
         char name[BTRFS_PATH_NAME_MAX + 1];
 };
 
@@ -51,7 +52,6 @@ struct btrfs_ioctl_vol_args {
                                    struct btrfs_ioctl_vol_args)
 #define BTRFS_IOC_BALANCE _IOW(BTRFS_IOCTL_MAGIC, 12, \
                                    struct btrfs_ioctl_vol_args)
-
 struct btrfs_ioctl_clone_range_args {
   __s64 src_fd;
   __u64 src_offset, src_length;
@@ -61,4 +61,7 @@ struct btrfs_ioctl_clone_range_args {
 #define BTRFS_IOC_CLONE_RANGE _IOW(BTRFS_IOCTL_MAGIC, 13, \
                                   struct btrfs_ioctl_clone_range_args)
 
+#define BTRFS_IOC_SUBVOL_CREATE _IOW(BTRFS_IOCTL_MAGIC, 14, \
+                                   struct btrfs_ioctl_vol_args)
+
 #endif