freezer: move frozen_process() to kernel/power/process.c

Other than refrigerator, no one else calls frozen_process().  So move it from
include/linux/freezer.h to kernel/power/process.c.

Also, since a task can be marked as frozen by itself, we don't need to pass
the (struct task_struct *p) parameter to frozen_process().

Signed-off-by: Gautham R Shenoy <ego@in.ibm.com>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Cc: Oleg Nesterov <oleg@tv-sign.ru>
Cc: Pavel Machek <pavel@ucw.cz>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

2 files changed, 13 insertions, 14 deletions

diff --git a/include/linux/freezer.h b/include/linux/freezer.h
index 1045ee9c0bb4..4631086f5060 100644
--- a/include/linux/freezer.h
+++ b/include/linux/freezer.h
@@ -58,18 +58,6 @@ static inline int thaw_process(struct task_struct *p)
         return 0;
 }
 
-/*
- * freezing is complete, mark process as frozen
- */
-static inline void frozen_process(struct task_struct *p)
-{
-        if (!unlikely(p->flags & PF_NOFREEZE)) {
-                p->flags |= PF_FROZEN;
-                wmb();
-        }
-        clear_tsk_thread_flag(p, TIF_FREEZE);
-}
-
 extern void refrigerator(void);
 extern int freeze_processes(void);
 extern void thaw_processes(void);
@@ -132,7 +120,6 @@ static inline int frozen(struct task_struct *p) { return 0; }
 static inline int freezing(struct task_struct *p) { return 0; }
 static inline void freeze(struct task_struct *p) { BUG(); }
 static inline int thaw_process(struct task_struct *p) { return 1; }
-static inline void frozen_process(struct task_struct *p) { BUG(); }
 
 static inline void refrigerator(void) {}
 static inline int freeze_processes(void) { BUG(); return 0; }
diff --git a/kernel/power/process.c b/kernel/power/process.c
index 2cea2658e985..d31d638ab4c0 100644
--- a/kernel/power/process.c
+++ b/kernel/power/process.c
@@ -31,6 +31,18 @@ static inline int freezeable(struct task_struct * p)
         return 1;
 }
 
+/*
+ * freezing is complete, mark current process as frozen
+ */
+static inline void frozen_process(void)
+{
+        if (!unlikely(current->flags & PF_NOFREEZE)) {
+                current->flags |= PF_FROZEN;
+                wmb();
+        }
+        clear_tsk_thread_flag(current, TIF_FREEZE);
+}
+
 /* Refrigerator is place where frozen processes are stored :-). */
 void refrigerator(void)
 {
@@ -40,7 +52,7 @@ void refrigerator(void)
 
         task_lock(current);
         if (freezing(current)) {
-                frozen_process(current);
+                frozen_process();
                 task_unlock(current);
         } else {
                 task_unlock(current);