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-rw-r--r--fs/btrfs/ioctl.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/fs/btrfs/ioctl.h b/fs/btrfs/ioctl.h
index 79c07b104f91..f1923e0260e3 100644
--- a/fs/btrfs/ioctl.h
+++ b/fs/btrfs/ioctl.h
@@ -1,3 +1,4 @@
+
/*
* Copyright (C) 2007 Oracle. All rights reserved.
*
@@ -133,4 +134,5 @@ struct btrfs_ioctl_clone_range_args {
struct btrfs_ioctl_search_args)
#define BTRFS_IOC_INO_LOOKUP _IOWR(BTRFS_IOCTL_MAGIC, 18, \
struct btrfs_ioctl_ino_lookup_args)
+#define BTRFS_IOC_DEFAULT_SUBVOL _IOW(BTRFS_IOCTL_MAGIC, 19, u64)
#endif