diff options
Diffstat (limited to 'kernel/power/main.c')
| -rw-r--r-- | kernel/power/main.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/kernel/power/main.c b/kernel/power/main.c index fb2412e7a0ce..3cdf95b1dc92 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; |