1291 struct backref_ctx {  struct
1346 	struct backref_ctx *bctx = ctx_;  in iterate_backrefs()
1415 	struct backref_ctx *bctx = ctx;  in lookup_backref_cache()
1455 	struct backref_ctx *bctx = ctx;  in store_backref_cache()
1528 	const struct backref_ctx *bctx = ctx;  in check_extent_item()
1563 	const struct backref_ctx *bctx = ctx;  in skip_self_data_ref()
1596 	struct backref_ctx backref_ctx = { 0 };  in find_extent_clone()  local
1635 	backref_ctx.sctx = sctx;  in find_extent_clone()
1636 	backref_ctx.cur_objectid = ino;  in find_extent_clone()
1637 	backref_ctx.cur_offset = data_offset;  in find_extent_clone()
1638 	backref_ctx.bytenr = disk_byte;  in find_extent_clone()
1643 	backref_ctx.backref_owner = btrfs_header_owner(eb);  in find_extent_clone()
1644 	backref_ctx.backref_offset = data_offset - btrfs_file_extent_offset(eb, fi);  in find_extent_clone()
1652 		backref_ctx.extent_len = ino_size - data_offset;  in find_extent_clone()
1654 		backref_ctx.extent_len = num_bytes;  in find_extent_clone()
1667 	backref_walk_ctx.user_ctx = &backref_ctx;  in find_extent_clone()
1681 				    &backref_ctx);  in find_extent_clone()
1708 	if (!backref_ctx.found) {  in find_extent_clone()
1733 			if (clone_root->num_bytes >= backref_ctx.extent_len)  in find_extent_clone()