btrfs-progs: Cleanup old btrfs-convert

Cleanup all the old btrfs-convert facilities, including:
1) btrfs_convert_operations->alloc/free/test_extents*
   No need to do non-standard extent allocation.
   After init_btrfs() everything can be done by normal routine.

   Now only 4 functions are needed in btrfs_convert_operations.
   1) open_fs
   2) read_used_space
   3) copy_inodes
   4) close_fs

2) fs_info->extent_ops
   Same as above.

3) Old init_btrfs(), create_image(), create_file_image_range()
   Replaced with newer and cleaner one.

Signed-off-by: Qu Wenruo <quwenruo@cn.fujitsu.com>
Signed-off-by: David Sterba <dsterba@suse.com>

1 files changed, 0 insertions, 8 deletions

diff --git a/ctree.h b/ctree.h
index c1534fa3..9e3626f1 100644
--- a/ctree.h
+++ b/ctree.h
@@ -960,13 +960,6 @@ struct btrfs_block_group_cache {
 	int ro;
 };
 
-struct btrfs_extent_ops {
-       int (*alloc_extent)(struct btrfs_root *root, u64 num_bytes,
-			   u64 hint_byte, struct btrfs_key *ins, int metadata);
-       int (*free_extent)(struct btrfs_root *root, u64 bytenr,
-		          u64 num_bytes);
-};
-
 struct btrfs_device;
 struct btrfs_fs_devices;
 struct btrfs_fs_info {
@@ -1017,7 +1010,6 @@ struct btrfs_fs_info {
 	u64 super_bytenr;
 	u64 total_pinned;
 
-	struct btrfs_extent_ops *extent_ops;
 	struct list_head dirty_cowonly_roots;
 	struct list_head recow_ebs;