commit: 7b5179ac14dbad945647ac9e76bbbf14ed9e0dbe From: Rafael J. Wysocki <[email protected]> Date: Wed, 28 Mar 2012 23:30:14 +0200 Subject: PM / Hibernate: Disable usermode helpers right before freezing tasks
There is no reason to call usermodehelper_disable() before creating memory bitmaps in hibernate() and software_resume(), so call it right before freeze_processes(), in accordance with the other suspend and hibernation code. Consequently, call usermodehelper_enable() right after the thawing of tasks rather than after freeing the memory bitmaps. Signed-off-by: Rafael J. Wysocki <[email protected]> Acked-by: Greg Kroah-Hartman <[email protected]> Cc: [email protected] --- kernel/power/hibernate.c | 23 ++++++++++------------- 1 files changed, 10 insertions(+), 13 deletions(-) diff --git a/kernel/power/hibernate.c b/kernel/power/hibernate.c index 0a186cf..639ff6e 100644 --- a/kernel/power/hibernate.c +++ b/kernel/power/hibernate.c @@ -611,19 +611,19 @@ int hibernate(void) if (error) goto Exit; - error = usermodehelper_disable(); - if (error) - goto Exit; - /* Allocate memory management structures */ error = create_basic_memory_bitmaps(); if (error) - goto Enable_umh; + goto Exit; printk(KERN_INFO "PM: Syncing filesystems ... "); sys_sync(); printk("done.\n"); + error = usermodehelper_disable(); + if (error) + goto Exit; + error = freeze_processes(); if (error) goto Free_bitmaps; @@ -660,9 +660,8 @@ int hibernate(void) freezer_test_done = false; Free_bitmaps: - free_basic_memory_bitmaps(); - Enable_umh: usermodehelper_enable(); + free_basic_memory_bitmaps(); Exit: pm_notifier_call_chain(PM_POST_HIBERNATION); pm_restore_console(); @@ -777,15 +776,13 @@ static int software_resume(void) if (error) goto close_finish; - error = usermodehelper_disable(); + error = create_basic_memory_bitmaps(); if (error) goto close_finish; - error = create_basic_memory_bitmaps(); - if (error) { - usermodehelper_enable(); + error = usermodehelper_disable(); + if (error) goto close_finish; - } pr_debug("PM: Preparing processes for restore.\n"); error = freeze_processes(); @@ -805,8 +802,8 @@ static int software_resume(void) swsusp_free(); thaw_processes(); Done: - free_basic_memory_bitmaps(); usermodehelper_enable(); + free_basic_memory_bitmaps(); Finish: pm_notifier_call_chain(PM_POST_RESTORE); pm_restore_console(); -- 1.7.3.4 -- To unsubscribe from this list: send the line "unsubscribe stable" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
