Merge tag 'cgroup-for-7.3-rc4-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup

Pull cgroup fixes from Tejun Heo:

 - With local event accounting, a fork rejected by the pids controller
   updated pids.events without notifying its pollers

 - A cgroup selftest failed to compile with fortification enabled
   because an O_TMPFILE open lacked its mode argument

* tag 'cgroup-for-7.3-rc4-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup:
  cgroup/pids: Restore pids.events notifications in local mode
  selftests: cgroup: give the O_TMPFILE open in get_temp_fd() a mode

1 files changed, 5 insertions, 0 deletions

diff --git a/kernel/cgroup/pids.c b/kernel/cgroup/pids.c
index ecbb839d2acb..78cdc0558d0c 100644
--- a/kernel/cgroup/pids.c
+++ b/kernel/cgroup/pids.c
@@ -253,6 +253,11 @@ static void pids_event(struct pids_cgroup *pids_forking,
 	}
 	if (!cgroup_subsys_on_dfl(pids_cgrp_subsys) ||
 	    cgrp_dfl_root.flags & CGRP_ROOT_PIDS_LOCAL_EVENTS) {
+		/*
+		 * pids.events reports the local counter on legacy hierarchies
+		 * and when pids_localevents is enabled.
+		 */
+		cgroup_file_notify(&p->events_file);
 		cgroup_file_notify(&p->events_local_file);
 		return;
 	}