hfscommon/Misc/VolumeAllocation.c

737     struct jnl_trim_list trimlist;
746     bzero (&trimlist, sizeof(trimlist));
753         trimlist.extents = (dk_extent_t*)extents;
754         trimlist.allocated_count = alloc_count;
755         trimlist.extent_count = 0;
761                                           &blocks_scanned, &trimlist);
768             hfs_issue_unmap(hfsmp, &trimlist);
770         if (trimlist.extents) {
771             kfree (trimlist.extents, (trimlist.allocated_count * sizeof(dk_extent_t)));