Re: [PATCH net 1/2] net/sched: pfifo_fast: cap ring size and account to memcg
From: Jakub Kicinski <kuba@kernel.org>
Date: 2026-08-22 20:44:02
Also in:
stable
On Thu, 20 Aug 2026 05:57:41 -0400 Jamal Hadi Salim wrote:
+ if (qlen > 65535) {
+ pr_warn_ratelimited("pfifo_fast: capping ring size %u to 65535 for dev %s\n",
+ qlen, qdisc_dev(qdisc)->name);
+ qlen = 65535;
+ }Why not a hard cap? We do that all over the place, once in a release we pick a value too small and someone quickly sends us a fix up to bump the number. No problem.