Rafael J. Wysocki 181e9bdef3 PM / Hibernate: Fix s2disk regression related to freezing workqueues ... Commit 2aede851dd PM / Hibernate: Freeze kernel threads after preallocating memory introduced a mechanism by which kernel threads were frozen after the preallocation of hibernate image memory to avoid problems with frozen kernel threads not responding to memory freeing requests. However, it overlooked the s2disk code path in which the SNAPSHOT_CREATE_IMAGE ioctl was run directly after SNAPSHOT_FREE, which caused freeze_workqueues_begin() to BUG(), because it saw that worqueues had been already frozen. Although in principle this issue might be addressed by removing the relevant BUG_ON() from freeze_workqueues_begin(), that would reintroduce the very problem that commit 2aede851dd attempted to avoid into that particular code path. For this reason, to fix the issue at hand, introduce thaw_kernel_threads() and make the SNAPSHOT_FREE ioctl execute it. Special thanks to Srivatsa S. Bhat for detailed analysis of the problem. Reported-and-tested-by: Jiri Slaby <jslaby@suse.cz> Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Acked-by: Srivatsa S. Bhat <srivatsa.bhat@linux.vnet.ibm.com> Cc: stable@kernel.org		2012-01-29 20:35:52 +01:00
..
debug	module: struct module_ref should contains long fields	2012-01-13 09:32:14 +10:30
events	perf: Call perf_cgroup_event_time() directly	2012-01-21 09:33:42 +01:00
gcov
irq	module_param: make bool parameters really bool (core code)	2012-01-13 09:32:18 +10:30
power	PM / Hibernate: Fix s2disk regression related to freezing workqueues	2012-01-29 20:35:52 +01:00
sched	kernel-doc: fix kernel-doc warnings in sched	2012-01-23 08:44:54 -08:00
time	Merge branch 'rcu/fixes-for-v3.2' into rcu/urgent	2012-01-16 09:41:18 -08:00
trace	Merge branch 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2012-01-15 11:26:35 -08:00
.gitignore
acct.c	Merge branch 'for-linus2' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2012-01-08 12:19:57 -08:00
async.c	kernel/async: remove redundant declaration.	2012-01-13 09:32:18 +10:30
audit.c	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/audit	2012-01-17 16:41:31 -08:00
audit.h	audit: remove AUDIT_SETUP_CONTEXT as it isn't used	2012-01-17 16:16:57 -05:00
audit_tree.c
audit_watch.c
auditfilter.c	audit: allow interfield comparison in audit rules	2012-01-17 16:17:01 -05:00
auditsc.c	kernel-doc: fix new warnings in auditsc.c	2012-01-23 08:44:53 -08:00
backtracetest.c
bounds.c
capability.c	Revert "capabitlies: ns_capable can use the cap helpers rather than lsm call"	2012-01-17 10:19:41 -08:00
cgroup.c	Merge branch 'for-3.3' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup	2012-01-09 12:59:24 -08:00
cgroup_freezer.c	Merge branch 'for-3.3' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup	2012-01-09 12:59:24 -08:00
compat.c
configs.c
cpu.c	Merge branch 'pm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm	2012-01-08 13:10:57 -08:00
cpu_pm.c
cpuset.c	Merge branch 'for-3.3' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup	2012-01-09 12:59:24 -08:00
crash_dump.c
cred.c
delayacct.c
dma.c
elfcore.c
exec_domain.c
exit.c	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/audit	2012-01-17 16:41:31 -08:00
extable.c
fork.c	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/audit	2012-01-17 16:41:31 -08:00
freezer.c
futex.c	futex: Fix uninterruptible loop due to gate_area	2011-12-31 11:48:28 -08:00
futex_compat.c
groups.c
hrtimer.c
hung_task.c	hung_task: fix false positive during vfork	2012-01-03 16:14:32 -08:00
irq_work.c
itimer.c	[S390] cputime: add sparse checking and cleanup	2011-12-15 14:56:19 +01:00
jump_label.c	Merge remote-tracking branch 'tip/perf/core' into kvm-updates/3.3	2011-12-27 11:22:24 +02:00
kallsyms.c
Kconfig.freezer
Kconfig.hz
Kconfig.locks
Kconfig.preempt
kexec.c	kdump: crashk_res init check for /sys/kernel/kexec_crash_size	2012-01-12 20:13:11 -08:00
kfifo.c
kmod.c	Merge branch 'pm-sleep' into pm-for-linus	2011-12-25 23:42:20 +01:00
kprobes.c	kprobes: initialize before using a hlist	2012-01-23 08:38:48 -08:00
ksysfs.c
kthread.c
latencytop.c
lockdep.c	Merge branch 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2012-01-06 08:02:58 -08:00
lockdep_internals.h
lockdep_proc.c
lockdep_states.h
Makefile	PM: Make sysrq-o be available for CONFIG_PM unset	2012-01-14 00:33:03 +01:00
module.c	error: implicit declaration of function 'module_flags_taint'	2012-01-15 16:21:07 -08:00
mutex-debug.c
mutex-debug.h
mutex.c
mutex.h
notifier.c
nsproxy.c
padata.c
panic.c	panic: don't print redundant backtraces on oops	2012-01-12 20:13:11 -08:00
params.c	module_param: avoid bool abuse, add bint for special cases.	2012-01-13 09:32:17 +10:30
pid.c	sysctl: add the kernel.ns_last_pid control	2012-01-12 20:13:11 -08:00
pid_namespace.c	sysctl: add the kernel.ns_last_pid control	2012-01-12 20:13:11 -08:00
posix-cpu-timers.c	[S390] cputime: add sparse checking and cleanup	2011-12-15 14:56:19 +01:00
posix-timers.c
printk.c	module_param: make bool parameters really bool (core code)	2012-01-13 09:32:18 +10:30
profile.c
ptrace.c	Merge branch 'for-linus' of git://selinuxproject.org/~jmorris/linux-security	2012-01-14 18:36:33 -08:00
range.c
rcu.h	rcu: Deconfuse dynticks entry-exit tracing	2011-12-11 10:31:42 -08:00
rcupdate.c	rcu: Detect illegal rcu dereference in extended quiescent state	2011-12-11 10:31:30 -08:00
rcutiny.c	rcu: Augment rcu_batch_end tracing for idle and callback state	2011-12-11 10:32:22 -08:00
rcutiny_plugin.h	rcu: Apply ACCESS_ONCE() to rcu_boost() return value	2011-12-11 10:33:19 -08:00
rcutorture.c	rcu: Add missing __cpuinit annotation in rcutorture code	2012-01-16 09:44:05 -08:00
rcutree.c	rcu: Augment rcu_batch_end tracing for idle and callback state	2011-12-11 10:32:22 -08:00
rcutree.h	rcu: Keep invoking callbacks if CPU otherwise idle	2011-12-11 10:32:09 -08:00
rcutree_plugin.h	rcu: Apply ACCESS_ONCE() to rcu_boost() return value	2011-12-11 10:33:19 -08:00
rcutree_trace.c	rcu: Track idleness independent of idle tasks	2011-12-11 10:31:24 -08:00
relay.c	switch debugfs to umode_t	2012-01-03 22:54:56 -05:00
res_counter.c	net: introduce res_counter_charge_nofail() for socket allocations	2012-01-22 15:08:46 -05:00
resource.c
rtmutex-debug.c
rtmutex-debug.h
rtmutex-tester.c	rtmutex-tester: convert sysdev_class to a regular subsystem	2011-12-14 14:54:22 -08:00
rtmutex.c	Revert "rcu: Permit rt_mutex_unlock() with irqs disabled"	2011-12-11 10:33:18 -08:00
rtmutex.h
rtmutex_common.h
rwsem.c
seccomp.c	seccomp: audit abnormal end to a process due to seccomp	2012-01-17 16:16:55 -05:00
semaphore.c
signal.c	user namespace: make signal.c respect user namespaces	2012-01-10 16:30:54 -08:00
smp.c
softirq.c	rcu: Fix early call to rcu_idle_enter()	2011-12-11 10:31:38 -08:00
spinlock.c
srcu.c
stacktrace.c
stop_machine.c
sys.c	c/r: prctl: add PR_SET_MM codes to set up mm_struct entries	2012-01-12 20:13:13 -08:00
sys_ni.c
sysctl.c
sysctl_binary.c	binary_sysctl(): fix memory leak	2011-12-20 10:25:04 -08:00
sysctl_check.c
taskstats.c
test_kprobes.c
time.c
timeconst.pl
timer.c	Merge branch 'core-debugobjects-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2012-01-06 07:53:34 -08:00
tracepoint.c	tracepoints/module: Fix disabling tracepoints with taint CRAP or OOT	2012-01-16 11:35:57 -05:00
tsacct.c	[S390] cputime: add sparse checking and cleanup	2011-12-15 14:56:19 +01:00
uid16.c
up.c
user-return-notifier.c
user.c
user_namespace.c
utsname.c
utsname_sysctl.c
wait.c	lockdep/waitqueues: Add better annotation	2011-12-21 10:07:39 +01:00
watchdog.c
workqueue.c	workqueue: make alloc_workqueue() take printf fmt and args for name	2012-01-10 16:30:54 -08:00
workqueue_sched.h