diff options
| -rw-r--r-- | kernel/power/disk.c | 4 | ||||
| -rw-r--r-- | kernel/power/main.c | 6 | ||||
| -rw-r--r-- | kernel/power/process.c | 1 | ||||
| -rw-r--r-- | kernel/power/user.c | 4 |
4 files changed, 14 insertions, 1 deletions
diff --git a/kernel/power/disk.c b/kernel/power/disk.c index 9348d95..555c0f0 100644 --- a/kernel/power/disk.c +++ b/kernel/power/disk.c @@ -313,6 +313,10 @@ int hibernate(void) if (error) goto Exit; + printk("Syncing filesystems ... "); + sys_sync(); + printk("done.\n"); + error = prepare_processes(); if (error) goto Finish; diff --git a/kernel/power/main.c b/kernel/power/main.c index fb2412e..3cdf95b 100644 --- a/kernel/power/main.c +++ b/kernel/power/main.c @@ -20,6 +20,7 @@ #include <linux/resume-trace.h> #include <linux/freezer.h> #include <linux/vmstat.h> +#include <linux/syscalls.h> #include "power.h" @@ -230,9 +231,14 @@ static int enter_state(suspend_state_t state) if (!valid_state(state)) return -ENODEV; + if (!mutex_trylock(&pm_mutex)) return -EBUSY; + printk("Syncing filesystems ... "); + sys_sync(); + printk("done.\n"); + pr_debug("PM: Preparing system for %s sleep\n", pm_states[state]); if ((error = suspend_prepare())) goto Unlock; diff --git a/kernel/power/process.c b/kernel/power/process.c index 3434940..dba2f3a 100644 --- a/kernel/power/process.c +++ b/kernel/power/process.c @@ -191,7 +191,6 @@ int freeze_processes(void) if (error) return error; - sys_sync(); error = try_to_freeze_tasks(FREEZER_KERNEL_THREADS); if (error) return error; diff --git a/kernel/power/user.c b/kernel/power/user.c index bd0723a..5bd321b 100644 --- a/kernel/power/user.c +++ b/kernel/power/user.c @@ -153,6 +153,10 @@ static int snapshot_ioctl(struct inode *inode, struct file *filp, mutex_lock(&pm_mutex); error = pm_notifier_call_chain(PM_HIBERNATION_PREPARE); if (!error) { + printk("Syncing filesystems ... "); + sys_sync(); + printk("done.\n"); + error = freeze_processes(); if (error) thaw_processes(); |
