freezer: remove unused @sig_only from freeze_task()

After "freezer: make freezing() test freeze conditions in effect
instead of TIF_FREEZE", freezing() returns authoritative answer on
whether the current task should freeze or not and freeze_task()
doesn't need or use @sig_only.  Remove it.

While at it, rewrite function comment for freeze_task() and rename
@sig_only to @user_only in try_to_freeze_tasks().

This patch doesn't cause any functional change.

Signed-off-by: Tejun Heo <tj@kernel.org>
Acked-by: Oleg Nesterov <oleg@redhat.com>

1 files changed, 2 insertions, 2 deletions

diff --git a/kernel/cgroup_freezer.c b/kernel/cgroup_freezer.c
index 2327ad11725f..e411a60cc2c8 100644
--- a/kernel/cgroup_freezer.c
+++ b/kernel/cgroup_freezer.c
@@ -206,7 +206,7 @@ static void freezer_fork(struct cgroup_subsys *ss, struct task_struct *task)
 
         /* Locking avoids race with FREEZING -> THAWED transitions. */
         if (freezer->state == CGROUP_FREEZING)
-                freeze_task(task, true);
+                freeze_task(task);
         spin_unlock_irq(&freezer->lock);
 }
 
@@ -274,7 +274,7 @@ static int try_to_freeze_cgroup(struct cgroup *cgroup, struct freezer *freezer)
 
         cgroup_iter_start(cgroup, &it);
         while ((task = cgroup_iter_next(cgroup, &it))) {
-                if (!freeze_task(task, true))
+                if (!freeze_task(task))
                         continue;
                 if (frozen(task))
                         continue;