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-rw-r--r--include/linux/suspend.h3
-rw-r--r--kernel/power/hibernate.c5
-rw-r--r--kernel/power/main.c9
-rw-r--r--kernel/power/suspend.c13
-rw-r--r--kernel/power/user.c5
5 files changed, 19 insertions, 16 deletions
diff --git a/include/linux/suspend.h b/include/linux/suspend.h
index 3f529ad9a9d2..6b3ea9ea6a9e 100644
--- a/include/linux/suspend.h
+++ b/include/linux/suspend.h
@@ -425,6 +425,7 @@ void restore_processor_state(void);
/* kernel/power/main.c */
extern int register_pm_notifier(struct notifier_block *nb);
extern int unregister_pm_notifier(struct notifier_block *nb);
+extern void ksys_sync_helper(void);
#define pm_notifier(fn, pri) { \
static struct notifier_block fn##_nb = \
@@ -462,6 +463,8 @@ static inline int unregister_pm_notifier(struct notifier_block *nb)
return 0;
}
+static inline void ksys_sync_helper(void) {}
+
#define pm_notifier(fn, pri) do { (void)(fn); } while (0)
static inline bool pm_wakeup_pending(void) { return false; }
diff --git a/kernel/power/hibernate.c b/kernel/power/hibernate.c
index abef759de7c8..cc105ecd9c07 100644
--- a/kernel/power/hibernate.c
+++ b/kernel/power/hibernate.c
@@ -14,7 +14,6 @@
#include <linux/export.h>
#include <linux/suspend.h>
-#include <linux/syscalls.h>
#include <linux/reboot.h>
#include <linux/string.h>
#include <linux/device.h>
@@ -709,9 +708,7 @@ int hibernate(void)
goto Exit;
}
- pr_info("Syncing filesystems ... \n");
- ksys_sync();
- pr_info("done.\n");
+ ksys_sync_helper();
error = freeze_processes();
if (error)
diff --git a/kernel/power/main.c b/kernel/power/main.c
index 98e76cad128b..40472a7c5536 100644
--- a/kernel/power/main.c
+++ b/kernel/power/main.c
@@ -16,6 +16,7 @@
#include <linux/debugfs.h>
#include <linux/seq_file.h>
#include <linux/suspend.h>
+#include <linux/syscalls.h>
#include "power.h"
@@ -51,6 +52,14 @@ void unlock_system_sleep(void)
}
EXPORT_SYMBOL_GPL(unlock_system_sleep);
+void ksys_sync_helper(void)
+{
+ pr_info("Syncing filesystems ... ");
+ ksys_sync();
+ pr_cont("done.\n");
+}
+EXPORT_SYMBOL_GPL(ksys_sync_helper);
+
/* Routines for PM-transition notifications */
static BLOCKING_NOTIFIER_HEAD(pm_chain_head);
diff --git a/kernel/power/suspend.c b/kernel/power/suspend.c
index 0bd595a0b610..e39059dea38b 100644
--- a/kernel/power/suspend.c
+++ b/kernel/power/suspend.c
@@ -17,7 +17,6 @@
#include <linux/console.h>
#include <linux/cpu.h>
#include <linux/cpuidle.h>
-#include <linux/syscalls.h>
#include <linux/gfp.h>
#include <linux/io.h>
#include <linux/kernel.h>
@@ -568,13 +567,11 @@ static int enter_state(suspend_state_t state)
if (state == PM_SUSPEND_TO_IDLE)
s2idle_begin();
-#ifndef CONFIG_SUSPEND_SKIP_SYNC
- trace_suspend_resume(TPS("sync_filesystems"), 0, true);
- pr_info("Syncing filesystems ... ");
- ksys_sync();
- pr_cont("done.\n");
- trace_suspend_resume(TPS("sync_filesystems"), 0, false);
-#endif
+ if (!IS_ENABLED(CONFIG_SUSPEND_SKIP_SYNC)) {
+ trace_suspend_resume(TPS("sync_filesystems"), 0, true);
+ ksys_sync_helper();
+ trace_suspend_resume(TPS("sync_filesystems"), 0, false);
+ }
pm_pr_dbg("Preparing system for sleep (%s)\n", mem_sleep_labels[state]);
pm_suspend_clear_flags();
diff --git a/kernel/power/user.c b/kernel/power/user.c
index 2d8b60a3c86b..cb24e840a3e6 100644
--- a/kernel/power/user.c
+++ b/kernel/power/user.c
@@ -10,7 +10,6 @@
*/
#include <linux/suspend.h>
-#include <linux/syscalls.h>
#include <linux/reboot.h>
#include <linux/string.h>
#include <linux/device.h>
@@ -228,9 +227,7 @@ static long snapshot_ioctl(struct file *filp, unsigned int cmd,
if (data->frozen)
break;
- printk("Syncing filesystems ... ");
- ksys_sync();
- printk("done.\n");
+ ksys_sync_helper();
error = freeze_processes();
if (error)