From 232b14328050a4639130b0dec185f43968e72035 Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Thu, 18 Oct 2007 03:04:44 -0700 Subject: freezer: do not sync filesystems from freeze_processes The syncing of filesystems from within the freezer is generally not needed. Also, if there's an ext3 filesystem loopback-mounted from a FUSE one, the syncing results in writes to it and deadlocks. Similarly, it will deadlock if FUSE implements sync. Change freeze_processes() so that it doesn't execute sys_sync() and make the suspend and hibernation code path sync filesystems independently of the freezer. Signed-off-by: Rafael J. Wysocki Acked-by: Pavel Machek Cc: Nigel Cunningham Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- kernel/power/user.c | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'kernel/power/user.c') diff --git a/kernel/power/user.c b/kernel/power/user.c index bd0723a7df3..5bd321bcbb7 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(); -- cgit v1.2.3