diff --git a/libc/kernel/uapi/linux/btrfs.h b/libc/kernel/uapi/linux/btrfs.h
index 08b96a3..9f76d52 100644
--- a/libc/kernel/uapi/linux/btrfs.h
+++ b/libc/kernel/uapi/linux/btrfs.h
@@ -189,6 +189,7 @@
 #define BTRFS_FEATURE_INCOMPAT_METADATA_UUID (1ULL << 10)
 #define BTRFS_FEATURE_INCOMPAT_RAID1C34 (1ULL << 11)
 #define BTRFS_FEATURE_INCOMPAT_ZONED (1ULL << 12)
+#define BTRFS_FEATURE_INCOMPAT_EXTENT_TREE_V2 (1ULL << 13)
 struct btrfs_ioctl_feature_flags {
   __u64 compat_flags;
   __u64 compat_ro_flags;
@@ -461,6 +462,29 @@
   __u8 num_items;
   __u8 align[7];
 };
+struct btrfs_ioctl_encoded_io_args {
+  const struct iovec __user * iov;
+  unsigned long iovcnt;
+  __s64 offset;
+  __u64 flags;
+  __u64 len;
+  __u64 unencoded_len;
+  __u64 unencoded_offset;
+  __u32 compression;
+  __u32 encryption;
+  __u8 reserved[64];
+};
+#define BTRFS_ENCODED_IO_COMPRESSION_NONE 0
+#define BTRFS_ENCODED_IO_COMPRESSION_ZLIB 1
+#define BTRFS_ENCODED_IO_COMPRESSION_ZSTD 2
+#define BTRFS_ENCODED_IO_COMPRESSION_LZO_4K 3
+#define BTRFS_ENCODED_IO_COMPRESSION_LZO_8K 4
+#define BTRFS_ENCODED_IO_COMPRESSION_LZO_16K 5
+#define BTRFS_ENCODED_IO_COMPRESSION_LZO_32K 6
+#define BTRFS_ENCODED_IO_COMPRESSION_LZO_64K 7
+#define BTRFS_ENCODED_IO_COMPRESSION_TYPES 8
+#define BTRFS_ENCODED_IO_ENCRYPTION_NONE 0
+#define BTRFS_ENCODED_IO_ENCRYPTION_TYPES 1
 enum btrfs_err_code {
   BTRFS_ERROR_DEV_RAID1_MIN_NOT_MET = 1,
   BTRFS_ERROR_DEV_RAID10_MIN_NOT_MET,
@@ -534,4 +558,6 @@
 #define BTRFS_IOC_GET_SUBVOL_ROOTREF _IOWR(BTRFS_IOCTL_MAGIC, 61, struct btrfs_ioctl_get_subvol_rootref_args)
 #define BTRFS_IOC_INO_LOOKUP_USER _IOWR(BTRFS_IOCTL_MAGIC, 62, struct btrfs_ioctl_ino_lookup_user_args)
 #define BTRFS_IOC_SNAP_DESTROY_V2 _IOW(BTRFS_IOCTL_MAGIC, 63, struct btrfs_ioctl_vol_args_v2)
+#define BTRFS_IOC_ENCODED_READ _IOR(BTRFS_IOCTL_MAGIC, 64, struct btrfs_ioctl_encoded_io_args)
+#define BTRFS_IOC_ENCODED_WRITE _IOW(BTRFS_IOCTL_MAGIC, 64, struct btrfs_ioctl_encoded_io_args)
 #endif