Merge branch 'next' into for-linus

Prepare input updates for 7.1 merge window.

1 files changed, 32 insertions, 2 deletions

diff --git a/include/uapi/linux/btrfs_tree.h b/include/uapi/linux/btrfs_tree.h
index fc29d273845d..f7843e6bb978 100644
--- a/include/uapi/linux/btrfs_tree.h
+++ b/include/uapi/linux/btrfs_tree.h
@@ -76,6 +76,9 @@
 /* Tracks RAID stripes in block groups. */
 #define BTRFS_RAID_STRIPE_TREE_OBJECTID 12ULL
 
+/* Holds details of remapped addresses after relocation. */
+#define BTRFS_REMAP_TREE_OBJECTID 13ULL
+
 /* device stats in the device tree */
 #define BTRFS_DEV_STATS_OBJECTID 0ULL
 
@@ -282,6 +285,10 @@
 
 #define BTRFS_RAID_STRIPE_KEY	230
 
+#define BTRFS_IDENTITY_REMAP_KEY 	234
+#define BTRFS_REMAP_KEY		 	235
+#define BTRFS_REMAP_BACKREF_KEY	 	236
+
 /*
  * Records the overall state of the qgroups.
  * There's only one instance of this key present,
@@ -714,9 +721,12 @@ struct btrfs_super_block {
 	__u8 metadata_uuid[BTRFS_FSID_SIZE];
 
 	__u64 nr_global_roots;
+	__le64 remap_root;
+	__le64 remap_root_generation;
+	__u8 remap_root_level;
 
 	/* Future expansion */
-	__le64 reserved[27];
+	__u8 reserved[199];
 	__u8 sys_chunk_array[BTRFS_SYSTEM_CHUNK_ARRAY_SIZE];
 	struct btrfs_root_backup super_roots[BTRFS_NUM_BACKUP_ROOTS];
 
@@ -1161,12 +1171,15 @@ struct btrfs_dev_replace_item {
 #define BTRFS_BLOCK_GROUP_RAID6         (1ULL << 8)
 #define BTRFS_BLOCK_GROUP_RAID1C3       (1ULL << 9)
 #define BTRFS_BLOCK_GROUP_RAID1C4       (1ULL << 10)
+#define BTRFS_BLOCK_GROUP_REMAPPED      (1ULL << 11)
+#define BTRFS_BLOCK_GROUP_METADATA_REMAP (1ULL << 12)
 #define BTRFS_BLOCK_GROUP_RESERVED	(BTRFS_AVAIL_ALLOC_BIT_SINGLE | \
 					 BTRFS_SPACE_INFO_GLOBAL_RSV)
 
 #define BTRFS_BLOCK_GROUP_TYPE_MASK	(BTRFS_BLOCK_GROUP_DATA |    \
 					 BTRFS_BLOCK_GROUP_SYSTEM |  \
-					 BTRFS_BLOCK_GROUP_METADATA)
+					 BTRFS_BLOCK_GROUP_METADATA | \
+					 BTRFS_BLOCK_GROUP_METADATA_REMAP)
 
 #define BTRFS_BLOCK_GROUP_PROFILE_MASK	(BTRFS_BLOCK_GROUP_RAID0 |   \
 					 BTRFS_BLOCK_GROUP_RAID1 |   \
@@ -1219,6 +1232,14 @@ struct btrfs_block_group_item {
 	__le64 flags;
 } __attribute__ ((__packed__));
 
+struct btrfs_block_group_item_v2 {
+	__le64 used;
+	__le64 chunk_objectid;
+	__le64 flags;
+	__le64 remap_bytes;
+	__le32 identity_remap_count;
+} __attribute__ ((__packed__));
+
 struct btrfs_free_space_info {
 	__le32 extent_count;
 	__le32 flags;
@@ -1323,4 +1344,13 @@ struct btrfs_verity_descriptor_item {
 	__u8 encryption;
 } __attribute__ ((__packed__));
 
+/*
+ * For a range identified by a BTRFS_REMAP_KEY item in the remap tree, gives
+ * the address that the start of the range will get remapped to.  This
+ * structure is also shared by BTRFS_REMAP_BACKREF_KEY.
+ */
+struct btrfs_remap_item {
+	__le64 address;
+} __attribute__ ((__packed__));
+
 #endif /* _BTRFS_CTREE_H_ */