last_offset       213 event/ngx_event.h     off_t                      last_offset;
last_offset       165 http/ngx_http_copy_filter_module.c                 c->aio_sendfile = (offset != file->aio->last_offset);
last_offset       166 http/ngx_http_copy_filter_module.c                 file->aio->last_offset = offset;
last_offset        64 os/unix/ngx_file_aio_read.c         aio->last_offset = -1;