On Tue, Mar 21, 2023 at 09:09:07PM +0800, Yangtao Li wrote: > +static struct ctl_table drop_caches_table[] = { > + { > + .procname = "drop_caches", > + .data = &sysctl_drop_caches, > + .maxlen = sizeof(int), > + .mode = 0200, > + .proc_handler = drop_caches_sysctl_handler, > + .extra1 = SYSCTL_ONE, > + .extra2 = SYSCTL_FOUR, > + }, > + {} > +}; Could we avoid doing this until we no longer need an entire zero entry after the last one? Also, please post scripts/bloat-o-meter results for before-and-after.