btrfsck: add code to rebuild extent records

This also includes a new --repair btrfsck option.  For now it can
only fix errors in the extent allocation tree.

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

1 files changed, 1 insertions, 0 deletions

diff --git a/ctree.h b/ctree.h
index 1c3740cf..5e770d28 100644
--- a/ctree.h
+++ b/ctree.h
@@ -1785,6 +1785,7 @@ static inline u32 btrfs_level_size(struct btrfs_root *root, int level) {
 	btrfs_item_offset_nr(leaf, slot)))
 
 /* extent-tree.c */
+void btrfs_pin_extent(struct btrfs_fs_info *fs_info, u64 bytenr, u64 num_bytes);
 int btrfs_extent_post_op(struct btrfs_trans_handle *trans,
 			 struct btrfs_root *root);
 int btrfs_copy_pinned(struct btrfs_root *root, struct extent_io_tree *copy);