185 static int mergable_maps(struct extent_map *prev, struct extent_map *next)  in mergable_maps()  argument
198 	    test_bit(EXTENT_FLAG_LOGGING, &next->flags))  in mergable_maps()
206 	if (!list_empty(&prev->list) || !list_empty(&next->list))  in mergable_maps()
209 	if (extent_map_end(prev) == next->start &&  in mergable_maps()
210 	    prev->flags == next->flags &&  in mergable_maps()
211 	    prev->bdev == next->bdev &&  in mergable_maps()
212 	    ((next->block_start == EXTENT_MAP_HOLE &&  in mergable_maps()
214 	     (next->block_start == EXTENT_MAP_INLINE &&  in mergable_maps()
216 	     (next->block_start == EXTENT_MAP_DELALLOC &&  in mergable_maps()
218 	     (next->block_start < EXTENT_MAP_LAST_BYTE - 1 &&  in mergable_maps()
219 	      next->block_start == extent_map_block_end(prev)))) {  in mergable_maps()
366 	struct rb_node *next = NULL;  in __lookup_extent_mapping()  local
369 	rb_node = __tree_search(&tree->map, start, &prev, &next);  in __lookup_extent_mapping()
373 		else if (next)  in __lookup_extent_mapping()
374 			rb_node = next;  in __lookup_extent_mapping()