diff --git a/libc/kernel/uapi/linux/btrfs.h b/libc/kernel/uapi/linux/btrfs.h
index 69d55f0..11f950f 100644
--- a/libc/kernel/uapi/linux/btrfs.h
+++ b/libc/kernel/uapi/linux/btrfs.h
@@ -174,211 +174,251 @@
  __u8 fsid[BTRFS_FSID_SIZE];
  __u64 reserved[124];
 };
-#define BTRFS_BALANCE_CTL_PAUSE 1
+struct btrfs_ioctl_feature_flags {
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+ __u64 compat_flags;
+ __u64 compat_ro_flags;
+ __u64 incompat_flags;
+};
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#define BTRFS_BALANCE_CTL_PAUSE 1
 #define BTRFS_BALANCE_CTL_CANCEL 2
 struct btrfs_balance_args {
  __u64 profiles;
- __u64 usage;
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+ __u64 usage;
  __u64 devid;
  __u64 pstart;
  __u64 pend;
- __u64 vstart;
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+ __u64 vstart;
  __u64 vend;
  __u64 target;
  __u64 flags;
- __u64 unused[8];
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+ __u64 unused[8];
 } __attribute__ ((__packed__));
 struct btrfs_balance_progress {
  __u64 expected;
- __u64 considered;
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+ __u64 considered;
  __u64 completed;
 };
 #define BTRFS_BALANCE_STATE_RUNNING (1ULL << 0)
-#define BTRFS_BALANCE_STATE_PAUSE_REQ (1ULL << 1)
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#define BTRFS_BALANCE_STATE_PAUSE_REQ (1ULL << 1)
 #define BTRFS_BALANCE_STATE_CANCEL_REQ (1ULL << 2)
 struct btrfs_ioctl_balance_args {
  __u64 flags;
- __u64 state;
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+ __u64 state;
  struct btrfs_balance_args data;
  struct btrfs_balance_args meta;
  struct btrfs_balance_args sys;
- struct btrfs_balance_progress stat;
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+ struct btrfs_balance_progress stat;
  __u64 unused[72];
 };
 #define BTRFS_INO_LOOKUP_PATH_MAX 4080
-struct btrfs_ioctl_ino_lookup_args {
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+struct btrfs_ioctl_ino_lookup_args {
  __u64 treeid;
  __u64 objectid;
  char name[BTRFS_INO_LOOKUP_PATH_MAX];
-};
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+};
 struct btrfs_ioctl_search_key {
  __u64 tree_id;
  __u64 min_objectid;
- __u64 max_objectid;
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+ __u64 max_objectid;
  __u64 min_offset;
  __u64 max_offset;
  __u64 min_transid;
- __u64 max_transid;
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+ __u64 max_transid;
  __u32 min_type;
  __u32 max_type;
  __u32 nr_items;
- __u32 unused;
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+ __u32 unused;
  __u64 unused1;
  __u64 unused2;
  __u64 unused3;
- __u64 unused4;
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+ __u64 unused4;
 };
 struct btrfs_ioctl_search_header {
  __u64 transid;
- __u64 objectid;
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+ __u64 objectid;
  __u64 offset;
  __u32 type;
  __u32 len;
-};
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+};
 #define BTRFS_SEARCH_ARGS_BUFSIZE (4096 - sizeof(struct btrfs_ioctl_search_key))
 struct btrfs_ioctl_search_args {
  struct btrfs_ioctl_search_key key;
- char buf[BTRFS_SEARCH_ARGS_BUFSIZE];
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+ char buf[BTRFS_SEARCH_ARGS_BUFSIZE];
 };
 struct btrfs_ioctl_clone_range_args {
  __s64 src_fd;
- __u64 src_offset, src_length;
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+ __u64 src_offset, src_length;
  __u64 dest_offset;
 };
 #define BTRFS_DEFRAG_RANGE_COMPRESS 1
-#define BTRFS_DEFRAG_RANGE_START_IO 2
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#define BTRFS_DEFRAG_RANGE_START_IO 2
+#define BTRFS_SAME_DATA_DIFFERS 1
+struct btrfs_ioctl_same_extent_info {
+ __s64 fd;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+ __u64 logical_offset;
+ __u64 bytes_deduped;
+ __s32 status;
+ __u32 reserved;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+};
+struct btrfs_ioctl_same_args {
+ __u64 logical_offset;
+ __u64 length;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+ __u16 dest_count;
+ __u16 reserved1;
+ __u32 reserved2;
+ struct btrfs_ioctl_same_extent_info info[0];
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+};
 struct btrfs_ioctl_space_info {
  __u64 flags;
  __u64 total_bytes;
- __u64 used_bytes;
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+ __u64 used_bytes;
 };
 struct btrfs_ioctl_space_args {
  __u64 space_slots;
- __u64 total_spaces;
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+ __u64 total_spaces;
  struct btrfs_ioctl_space_info spaces[0];
 };
 struct btrfs_data_container {
- __u32 bytes_left;
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+ __u32 bytes_left;
  __u32 bytes_missing;
  __u32 elem_cnt;
  __u32 elem_missed;
- __u64 val[0];
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+ __u64 val[0];
 };
 struct btrfs_ioctl_ino_path_args {
  __u64 inum;
- __u64 size;
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+ __u64 size;
  __u64 reserved[4];
  __u64 fspath;
 };
-struct btrfs_ioctl_logical_ino_args {
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+struct btrfs_ioctl_logical_ino_args {
  __u64 logical;
  __u64 size;
  __u64 reserved[4];
- __u64 inodes;
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+ __u64 inodes;
 };
 enum btrfs_dev_stat_values {
  BTRFS_DEV_STAT_WRITE_ERRS,
- BTRFS_DEV_STAT_READ_ERRS,
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+ BTRFS_DEV_STAT_READ_ERRS,
  BTRFS_DEV_STAT_FLUSH_ERRS,
  BTRFS_DEV_STAT_CORRUPTION_ERRS,
  BTRFS_DEV_STAT_GENERATION_ERRS,
- BTRFS_DEV_STAT_VALUES_MAX
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+ BTRFS_DEV_STAT_VALUES_MAX
 };
 #define BTRFS_DEV_STATS_RESET (1ULL << 0)
 struct btrfs_ioctl_get_dev_stats {
- __u64 devid;
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+ __u64 devid;
  __u64 nr_items;
  __u64 flags;
  __u64 values[BTRFS_DEV_STAT_VALUES_MAX];
- __u64 unused[128 - 2 - BTRFS_DEV_STAT_VALUES_MAX];
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+ __u64 unused[128 - 2 - BTRFS_DEV_STAT_VALUES_MAX];
 };
 #define BTRFS_QUOTA_CTL_ENABLE 1
 #define BTRFS_QUOTA_CTL_DISABLE 2
-#define BTRFS_QUOTA_CTL_RESCAN__NOTUSED 3
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#define BTRFS_QUOTA_CTL_RESCAN__NOTUSED 3
 struct btrfs_ioctl_quota_ctl_args {
  __u64 cmd;
  __u64 status;
-};
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+};
 struct btrfs_ioctl_quota_rescan_args {
  __u64 flags;
  __u64 progress;
- __u64 reserved[6];
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+ __u64 reserved[6];
 };
 struct btrfs_ioctl_qgroup_assign_args {
  __u64 assign;
- __u64 src;
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+ __u64 src;
  __u64 dst;
 };
 struct btrfs_ioctl_qgroup_create_args {
- __u64 create;
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+ __u64 create;
  __u64 qgroupid;
 };
 struct btrfs_ioctl_timespec {
- __u64 sec;
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+ __u64 sec;
  __u32 nsec;
 };
 struct btrfs_ioctl_received_subvol_args {
- char uuid[BTRFS_UUID_SIZE];
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+ char uuid[BTRFS_UUID_SIZE];
  __u64 stransid;
  __u64 rtransid;
  struct btrfs_ioctl_timespec stime;
- struct btrfs_ioctl_timespec rtime;
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+ struct btrfs_ioctl_timespec rtime;
  __u64 flags;
  __u64 reserved[16];
 };
-#define BTRFS_SEND_FLAG_NO_FILE_DATA 0x1
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#define BTRFS_SEND_FLAG_NO_FILE_DATA 0x1
 #define BTRFS_SEND_FLAG_OMIT_STREAM_HEADER 0x2
 #define BTRFS_SEND_FLAG_OMIT_END_CMD 0x4
 #define BTRFS_SEND_FLAG_MASK   (BTRFS_SEND_FLAG_NO_FILE_DATA |   BTRFS_SEND_FLAG_OMIT_STREAM_HEADER |   BTRFS_SEND_FLAG_OMIT_END_CMD)
-struct btrfs_ioctl_send_args {
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+struct btrfs_ioctl_send_args {
  __s64 send_fd;
  __u64 clone_sources_count;
  __u64 __user *clone_sources;
- __u64 parent_root;
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+ __u64 parent_root;
  __u64 flags;
  __u64 reserved[4];
 };
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+enum btrfs_err_code {
+ notused,
+ BTRFS_ERROR_DEV_RAID1_MIN_NOT_MET,
+ BTRFS_ERROR_DEV_RAID10_MIN_NOT_MET,
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+ BTRFS_ERROR_DEV_RAID5_MIN_NOT_MET,
+ BTRFS_ERROR_DEV_RAID6_MIN_NOT_MET,
+ BTRFS_ERROR_DEV_TGT_REPLACE,
+ BTRFS_ERROR_DEV_MISSING_NOT_FOUND,
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+ BTRFS_ERROR_DEV_ONLY_WRITABLE,
+ BTRFS_ERROR_DEV_EXCL_RUN_IN_PROGRESS
+};
 #define BTRFS_IOC_SNAP_CREATE _IOW(BTRFS_IOCTL_MAGIC, 1,   struct btrfs_ioctl_vol_args)
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define BTRFS_IOC_DEFRAG _IOW(BTRFS_IOCTL_MAGIC, 2,   struct btrfs_ioctl_vol_args)
@@ -401,7 +441,7 @@
 #define BTRFS_IOC_TREE_SEARCH _IOWR(BTRFS_IOCTL_MAGIC, 17,   struct btrfs_ioctl_search_args)
 #define BTRFS_IOC_INO_LOOKUP _IOWR(BTRFS_IOCTL_MAGIC, 18,   struct btrfs_ioctl_ino_lookup_args)
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
-#define BTRFS_IOC_DEFAULT_SUBVOL _IOW(BTRFS_IOCTL_MAGIC, 19, u64)
+#define BTRFS_IOC_DEFAULT_SUBVOL _IOW(BTRFS_IOCTL_MAGIC, 19, __u64)
 #define BTRFS_IOC_SPACE_INFO _IOWR(BTRFS_IOCTL_MAGIC, 20,   struct btrfs_ioctl_space_args)
 #define BTRFS_IOC_START_SYNC _IOR(BTRFS_IOCTL_MAGIC, 24, __u64)
 #define BTRFS_IOC_WAIT_SYNC _IOW(BTRFS_IOCTL_MAGIC, 22, __u64)
@@ -434,10 +474,16 @@
 #define BTRFS_IOC_QGROUP_LIMIT _IOR(BTRFS_IOCTL_MAGIC, 43,   struct btrfs_ioctl_qgroup_limit_args)
 #define BTRFS_IOC_QUOTA_RESCAN _IOW(BTRFS_IOCTL_MAGIC, 44,   struct btrfs_ioctl_quota_rescan_args)
 #define BTRFS_IOC_QUOTA_RESCAN_STATUS _IOR(BTRFS_IOCTL_MAGIC, 45,   struct btrfs_ioctl_quota_rescan_args)
-#define BTRFS_IOC_GET_FSLABEL _IOR(BTRFS_IOCTL_MAGIC, 49,   char[BTRFS_LABEL_SIZE])
+#define BTRFS_IOC_QUOTA_RESCAN_WAIT _IO(BTRFS_IOCTL_MAGIC, 46)
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#define BTRFS_IOC_GET_FSLABEL _IOR(BTRFS_IOCTL_MAGIC, 49,   char[BTRFS_LABEL_SIZE])
 #define BTRFS_IOC_SET_FSLABEL _IOW(BTRFS_IOCTL_MAGIC, 50,   char[BTRFS_LABEL_SIZE])
 #define BTRFS_IOC_GET_DEV_STATS _IOWR(BTRFS_IOCTL_MAGIC, 52,   struct btrfs_ioctl_get_dev_stats)
 #define BTRFS_IOC_DEV_REPLACE _IOWR(BTRFS_IOCTL_MAGIC, 53,   struct btrfs_ioctl_dev_replace_args)
-#endif
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#define BTRFS_IOC_FILE_EXTENT_SAME _IOWR(BTRFS_IOCTL_MAGIC, 54,   struct btrfs_ioctl_same_args)
+#define BTRFS_IOC_GET_FEATURES _IOR(BTRFS_IOCTL_MAGIC, 57,   struct btrfs_ioctl_feature_flags)
+#define BTRFS_IOC_SET_FEATURES _IOW(BTRFS_IOCTL_MAGIC, 57,   struct btrfs_ioctl_feature_flags[2])
+#define BTRFS_IOC_GET_SUPPORTED_FEATURES _IOR(BTRFS_IOCTL_MAGIC, 57,   struct btrfs_ioctl_feature_flags[3])
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#endif