Btrfs: get rid of the extent_item type field

Signed-off-by: NChris Mason <chris.mason@oracle.com>

fs/btrfs/ctree.h

@@ -152,9 +152,6 @@ struct btrfs_path {
 	int slots[BTRFS_MAX_LEVEL];
 };
 
-/* values for the type field in btrfs_extent_item */
-#define BTRFS_EXTENT_TREE 1
-#define BTRFS_EXTENT_FILE 2
 /*
  * items in the extent btree are used to record the objectid of the
  * owner of the block and the number of references
@@ -162,7 +159,6 @@ struct btrfs_path {
 struct btrfs_extent_item {
 	__le32 refs;
 	__le64 owner;
-	u8 type;
 } __attribute__ ((__packed__));
 
 struct btrfs_inode_timespec {
@@ -489,16 +485,6 @@ static inline void btrfs_set_extent_owner(struct btrfs_extent_item *ei, u64 val)
 	ei->owner = cpu_to_le64(val);
 }
 
-static inline u8 btrfs_extent_type(struct btrfs_extent_item *ei)
-{
-	return ei->type;
-}
-
-static inline void btrfs_set_extent_type(struct btrfs_extent_item *ei, u8 val)
-{
-	ei->type = val;
-}
-
 static inline u64 btrfs_node_blockptr(struct btrfs_node *n, int nr)
 {
 	return le64_to_cpu(n->ptrs[nr].blockptr);
@@ -1036,7 +1022,7 @@ struct buffer_head *btrfs_alloc_free_block(struct btrfs_trans_handle *trans,
 					    struct btrfs_root *root);
 int btrfs_alloc_extent(struct btrfs_trans_handle *trans,
 		       struct btrfs_root *root, u64 owner,
-		       u8 type, u64 num_blocks, u64 search_start,
+		       u64 num_blocks, u64 search_start,
 		       u64 search_end, struct btrfs_key *ins);
 int btrfs_inc_ref(struct btrfs_trans_handle *trans, struct btrfs_root *root,
 		  struct buffer_head *buf);

fs/btrfs/extent-tree.c

@@ -167,7 +167,6 @@ static int finish_current_insert(struct btrfs_trans_handle *trans, struct
 	ins.offset = 1;
 	ins.flags = 0;
 	btrfs_set_key_type(&ins, BTRFS_EXTENT_ITEM_KEY);
-	btrfs_set_extent_type(&extent_item, BTRFS_EXTENT_TREE);
 	btrfs_set_extent_owner(&extent_item, extent_root->root_key.objectid);
 
 	for (i = 0; i < extent_root->fs_info->current_insert.flags; i++) {
@@ -464,7 +463,7 @@ static int find_free_extent(struct btrfs_trans_handle *trans, struct btrfs_root
  */
 int btrfs_alloc_extent(struct btrfs_trans_handle *trans,
 		       struct btrfs_root *root, u64 owner,
-		       u8 type, u64 num_blocks, u64 search_start,
+		       u64 num_blocks, u64 search_start,
 		       u64 search_end, struct btrfs_key *ins)
 {
 	int ret;
@@ -476,7 +475,6 @@ int btrfs_alloc_extent(struct btrfs_trans_handle *trans,
 
 	btrfs_set_extent_refs(&extent_item, 1);
 	btrfs_set_extent_owner(&extent_item, owner);
-	btrfs_set_extent_type(&extent_item, type);
 
 	if (root == extent_root) {
 		BUG_ON(extent_root->fs_info->current_insert.offset == 0);
@@ -520,7 +518,6 @@ struct buffer_head *btrfs_alloc_free_block(struct btrfs_trans_handle *trans,
 	struct buffer_head *buf;
 
 	ret = btrfs_alloc_extent(trans, root, root->root_key.objectid,
-				 BTRFS_EXTENT_TREE,
 				 1, 0, (unsigned long)-1, &ins);
 	if (ret) {
 		BUG();

fs/btrfs/super.c

@@ -1830,8 +1830,7 @@ static ssize_t btrfs_file_write(struct file *file, const char __user *buf,
 	if (inode->i_size >= PAGE_CACHE_SIZE || pos + count < inode->i_size ||
 	    pos + count - start_pos > BTRFS_MAX_INLINE_DATA_SIZE(root)) {
 		ret = btrfs_alloc_extent(trans, root, inode->i_ino,
-					 BTRFS_EXTENT_FILE, num_blocks, 1,
-					 (u64)-1, &ins);
+					 num_blocks, 1, (u64)-1, &ins);
 		BUG_ON(ret);
 		ret = btrfs_insert_file_extent(trans, root, inode->i_ino,
 				       start_pos, ins.objectid, ins.offset);