Lines Matching defs:existing

496  * forward/backward merge with existing mappings.  The extent_map struct passed
649  * Helper for btrfs_get_extent.  Given an existing extent in the tree,
650  * the existing extent is the nearest extent to map_start,
655 					 struct extent_map *existing,
668 	if (existing->start > map_start) {
669 		next = existing;
672 		prev = existing;
701  * a) Returning the existing extent in @em_in if @start is within the
702  *    existing em.
703  * b) Merge the existing extent with @em_in passed in.
728 		struct extent_map *existing;
730 		existing = btrfs_search_extent_mapping(&inode->extent_tree, start, len);
732 		trace_btrfs_handle_em_exist(fs_info, existing, em, start, len);
735 		 * existing will always be non-NULL, since there must be
738 		if (start >= existing->start &&
739 		    start < btrfs_extent_map_end(existing)) {
741 			*em_in = existing;
748 			 * The existing extent map is the one nearest to
751 			ret = merge_extent_mapping(inode, existing, em, start);
756 "extent map merge error existing [%llu, %llu) with em [%llu, %llu) start %llu",
757 					   existing->start, btrfs_extent_map_end(existing),
760 			btrfs_free_extent_map(existing);