[PATCH 8/8] security/landlock: convert thread iterator to for_each_thread_rcu
From: Ye Liu <hidden>
Date: 2026-09-04 08:31:12
Also in:
lkml
Subsystem:
landlock security module, security subsystem, the rest · Maintainers:
Mickaël Salaün, Paul Moore, James Morris, "Serge E. Hallyn", Linus Torvalds
From: Ye Liu <liuye@kylinos.cn> Replace guard(rcu)() + for_each_thread() with for_each_thread_rcu(), so that the RCU read-side critical section is scoped to the loop body. No functional change. Signed-off-by: Ye Liu <liuye@kylinos.cn> --- security/landlock/tsync.c | 8 ++------ 1 file changed, 2 insertions(+), 6 deletions(-)
diff --git a/security/landlock/tsync.c b/security/landlock/tsync.c
index 0b71e158c3f5..f1c08aae179b 100644
--- a/security/landlock/tsync.c
+++ b/security/landlock/tsync.c@@ -335,9 +335,7 @@ static size_t count_additional_threads(const struct tsync_works *works) caller = current; - guard(rcu)(); - - for_each_thread(caller, thread) { + for_each_thread_rcu(caller, thread) { /* Skip current, since it is initiating the sync. */ if (thread == caller) continue;
@@ -376,9 +374,7 @@ static bool schedule_task_work(struct tsync_works *works, caller = current; - guard(rcu)(); - - for_each_thread(caller, thread) { + for_each_thread_rcu(caller, thread) { /* Skip current, since it is initiating the sync. */ if (thread == caller) continue;
--
2.25.1