[PATCH 06/17] nstree: simplify owner list iteration
From: Christian Brauner <brauner@kernel.org>
Date: 2025-11-10 15:09:12
Also in:
bpf, cgroups, linux-fsdevel, lkml
Subsystem:
the rest · Maintainer:
Linus Torvalds
Make use of list_for_each_entry_from_rcu(). Signed-off-by: Christian Brauner <brauner@kernel.org> --- kernel/nstree.c | 10 +++++++--- 1 file changed, 7 insertions(+), 3 deletions(-)
diff --git a/kernel/nstree.c b/kernel/nstree.c
index 6c7ec9fbf25f..476dd738d653 100644
--- a/kernel/nstree.c
+++ b/kernel/nstree.c@@ -598,11 +598,15 @@ static ssize_t do_listns_userns(struct klistns *kls) rcu_read_lock(); if (!first_ns) - first_ns = list_entry_rcu(head->next, typeof(*ns), ns_owner_node.ns_list_entry); - for (ns = first_ns; &ns->ns_owner_node.ns_list_entry != head && nr_ns_ids; - ns = list_entry_rcu(ns->ns_owner_node.ns_list_entry.next, typeof(*ns), ns_owner_node.ns_list_entry)) { + first_ns = list_entry_rcu(head->next, typeof(*first_ns), ns_owner_node.ns_list_entry); + + ns = first_ns; + list_for_each_entry_from_rcu(ns, head, ns_owner_node.ns_list_entry) { struct ns_common *valid; + if (!nr_ns_ids) + break; + valid = legitimize_ns(kls, ns); if (!valid) continue;
--
2.47.3