PM / Freezer: Remove references to TIF_FREEZE in comments

This patch removes all the references in the code about the TIF_FREEZE
flag removed by commit a3201227f803ad7fd43180c5195dbe5a2bf998aa

    freezer: make freezing() test freeze conditions in effect instead of TIF_FREEZE

There still are some references to TIF_FREEZE in
Documentation/power/freezing-of-tasks.txt, but it looks like that
documentation needs more thorough work to reflect how the new
freezer works, and hence merely removing the references to TIF_FREEZE
won't really help. So I have not touched that part in this patch.

Suggested-by: Srivatsa S. Bhat <srivatsa.bhat@linux.vnet.ibm.com>
Signed-off-by: Marcos Paulo de Souza <marcos.mage@gmail.com>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>

1 files changed, 3 insertions, 5 deletions

diff --git a/kernel/power/process.c b/kernel/power/process.c
index 6aeb5efe00eb..0d2aeb226108 100644
--- a/kernel/power/process.c
+++ b/kernel/power/process.c
@@ -53,11 +53,9 @@ static int try_to_freeze_tasks(bool user_only)
                          * It is "frozen enough".  If the task does wake
                          * up, it will immediately call try_to_freeze.
                          *
-                         * Because freeze_task() goes through p's
-                         * scheduler lock after setting TIF_FREEZE, it's
-                         * guaranteed that either we see TASK_RUNNING or
-                         * try_to_stop() after schedule() in ptrace/signal
-                         * stop sees TIF_FREEZE.
+                         * Because freeze_task() goes through p's scheduler lock, it's
+                         * guaranteed that TASK_STOPPED/TRACED -> TASK_RUNNING
+                         * transition can't race with task state testing here.
                          */
                         if (!task_is_stopped_or_traced(p) &&
                             !freezer_should_skip(p))