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
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debug	…
events	perf: Call perf_cgroup_event_time() directly	2012-01-21 09:33:42 +01:00
gcov	…
irq	…
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	…
trace	…
.gitignore	…
Kconfig.freezer	…
Kconfig.hz	…
Kconfig.locks	…
Kconfig.preempt	…
Makefile	…
acct.c	…
async.c	…
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	…
cgroup_freezer.c	…
compat.c	…
configs.c	…
cpu.c	…
cpu_pm.c	…
cpuset.c	…
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_compat.c	…
groups.c	…
hrtimer.c	…
hung_task.c	…
irq_work.c	…
itimer.c	…
jump_label.c	…
kallsyms.c	…
kexec.c	…
kfifo.c	…
kmod.c	…
kprobes.c	kprobes: initialize before using a hlist	2012-01-23 08:38:48 -08:00
ksysfs.c	…
kthread.c	…
latencytop.c	…
lockdep.c	…
lockdep_internals.h	…
lockdep_proc.c	…
lockdep_states.h	…
module.c	…
mutex-debug.c	…
mutex-debug.h	…
mutex.c	…
mutex.h	…
notifier.c	…
nsproxy.c	…
padata.c	…
panic.c	…
params.c	…
pid.c	…
pid_namespace.c	…
posix-cpu-timers.c	…
posix-timers.c	…
printk.c	…
profile.c	…
ptrace.c	…
range.c	…
rcu.h	…
rcupdate.c	…
rcutiny.c	…
rcutiny_plugin.h	…
rcutorture.c	rcu: Add missing __cpuinit annotation in rcutorture code	2012-01-16 09:44:05 -08:00
rcutree.c	…
rcutree.h	…
rcutree_plugin.h	…
rcutree_trace.c	…
relay.c	…
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.c	…
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	…
smp.c	…
softirq.c	…
spinlock.c	…
srcu.c	…
stacktrace.c	…
stop_machine.c	…
sys.c	…
sys_ni.c	…
sysctl.c	…
sysctl_binary.c	…
sysctl_check.c	…
taskstats.c	…
test_kprobes.c	…
time.c	…
timeconst.pl	…
timer.c	…
tracepoint.c	…
tsacct.c	…
uid16.c	…
up.c	…
user-return-notifier.c	…
user.c	…
user_namespace.c	…
utsname.c	…
utsname_sysctl.c	…
wait.c	…
watchdog.c	…
workqueue.c	…
workqueue_sched.h	…