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Oleg Nesterov 85f4186af9 worker_thread: fix racy try_to_freeze() usage 
worker_thread() can miss freeze_process()->signal_wake_up() if it happens
between try_to_freeze() and prepare_to_wait().  We should check freezing()
before entering schedule().

This race was introduced by me in

	[PATCH 1/1] workqueue: don't migrate pending works from the dead CPU

Looks like mm/vmscan.c:kswapd() has the same race.

Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-05-09 12:30:53 -07:00
..
irq
Fix Linuxdoc comment
2007-05-09 12:30:48 -07:00
power
PM: Separate hibernation code from suspend code
2007-05-09 12:30:48 -07:00
time
Fix printk format warnings in timer_list.c
2007-05-09 12:30:50 -07:00
.gitignore
gitignore: ignore more generated files
2006-01-03 11:35:26 +01:00
acct.c
[PATCH] kernel: change uses of f_{dentry, vfsmnt} to use f_path
2006-12-08 08:28:42 -08:00
audit.c
audit: add spaces on either side of case "..." operator.
2007-05-08 11:15:09 -07:00
audit.h
[PATCH] audit: AUDIT_PERM support
2006-09-11 13:32:30 -04:00
auditfilter.c
[PATCH] minor update to rule add/delete messages (ver 2)
2007-02-17 21:30:09 -05:00
auditsc.c
[PATCH] fix deadlock in audit_log_task_context()
2007-03-14 15:27:48 -07:00
capability.c
[PATCH] pid: replace do/while_each_task_pid with do/while_each_pid_task
2007-02-12 09:48:32 -08:00
compat.c
[PATCH] Common compat_sys_sysinfo
2007-02-11 10:51:32 -08:00
configs.c
use simple_read_from_buffer in kernel/
2007-05-09 12:30:49 -07:00
cpu.c
call cpu_chain with CPU_DOWN_FAILED if CPU_DOWN_PREPARE failed
2007-05-09 12:30:51 -07:00
cpuset.c
use simple_read_from_buffer in kernel/
2007-05-09 12:30:49 -07:00
delayacct.c
KMEM_CACHE(): simplify slab cache creation
2007-05-07 12:12:55 -07:00
die_notifier.c
move die notifier handling to common code
2007-05-08 11:15:04 -07:00
dma.c
[PATCH] struct seq_operations and struct file_operations constification
2006-12-07 08:39:46 -08:00
exec_domain.c
Remove obsolete #include <linux/config.h>
2006-06-30 19:25:36 +02:00
exit.c
header cleaning: don't include smp_lock.h when not used
2007-05-08 11:15:07 -07:00
extable.c
[PATCH] symbol_put_addr() locks kernel
2006-05-15 11:20:55 -07:00
fork.c
header cleaning: don't include smp_lock.h when not used
2007-05-08 11:15:07 -07:00
futex_compat.c
[PATCH] __user annotations: futex
2006-10-10 15:37:22 -07:00
futex.c
futex: restartable futex_wait
2007-05-08 11:15:03 -07:00
hrtimer.c
export hrtimer_forward
2007-05-08 11:15:15 -07:00
itimer.c
The scheduled -EINVAL for invalid timevals in setitimer
2007-05-08 11:15:13 -07:00
kallsyms.c
kallsyms: cleanup: use seq_release_private() where appropriate
2007-05-08 11:15:09 -07:00
Kconfig.hz
[PATCH] HZ: 300Hz support
2006-12-07 08:39:36 -08:00
Kconfig.preempt
[PATCH] sched: voluntary kernel preemption
2005-06-25 16:24:45 -07:00
kexec.c
kdump/kexec: calculate note size at compile time
2007-05-08 11:15:07 -07:00
kfifo.c
[PATCH] Numerous fixes to kernel-doc info in source files.
2007-02-11 10:51:32 -08:00
kmod.c
Fix kevent's childs priority greediness
2007-05-08 11:15:07 -07:00
kprobes.c
Kprobes: The ON/OFF knob thru debugfs
2007-05-08 11:15:19 -07:00
ksysfs.c
remove "struct subsystem" as it is no longer needed
2007-05-02 18:57:59 -07:00
kthread.c
[PATCH] Numerous fixes to kernel-doc info in source files.
2007-02-11 10:51:32 -08:00
latency.c
[PATCH] severing module.h->sched.h
2006-12-04 02:00:22 -05:00
lockdep_internals.h
[PATCH] lockdep: more chains
2006-12-07 08:39:43 -08:00
lockdep_proc.c
[PATCH] remove many unneeded #includes of sched.h
2007-02-14 08:09:54 -08:00
lockdep.c
lockdep: removed unused ip argument in mark_lock & mark_held_locks
2007-05-08 11:15:13 -07:00
Makefile
move die notifier handling to common code
2007-05-08 11:15:04 -07:00
module.c
Fix race between cat /proc/slab_allocators and rmmod
2007-05-08 11:15:08 -07:00
mutex-debug.c
[PATCH] remove many unneeded #includes of sched.h
2007-02-14 08:09:54 -08:00
mutex-debug.h
[PATCH] lockdep: better lock debugging
2006-07-03 15:27:01 -07:00
mutex.c
[PATCH] lockdep: avoid lockdep warning in md
2006-12-08 08:28:39 -08:00
mutex.h
[PATCH] lockdep: prove mutex locking correctness
2006-07-03 15:27:04 -07:00
nsproxy.c
Merge sys_clone()/sys_unshare() nsproxy and namespace handling
2007-05-08 11:15:00 -07:00
panic.c
[PATCH] Add TAINT_USER and ability to set taint flags from userspace
2007-02-11 10:51:29 -08:00
params.c
kernel/params.c: fix lying comment for param_array()
2007-05-08 11:15:08 -07:00
pid.c
Merge sys_clone()/sys_unshare() nsproxy and namespace handling
2007-05-08 11:15:00 -07:00
posix-cpu-timers.c
Introduce a handy list_first_entry macro
2007-05-08 11:15:11 -07:00
posix-timers.c
header cleaning: don't include smp_lock.h when not used
2007-05-08 11:15:07 -07:00
printk.c
header cleaning: don't include smp_lock.h when not used
2007-05-08 11:15:07 -07:00
profile.c
[PATCH] proc: remove useless (and buggy) ->nlink settings
2007-02-11 10:51:32 -08:00
ptrace.c
[PATCH] pidspace: is_init()
2006-09-29 09:18:12 -07:00
rcupdate.c
[PATCH] rcu: add a prefetch() in rcu_do_batch()
2006-12-07 08:39:40 -08:00
rcutorture.c
rcutorture: Remove redundant assignment to cur_ops in for loop
2007-05-08 11:15:17 -07:00
relay.c
relay: use plain timer instead of delayed work
2007-05-09 12:30:51 -07:00
resource.c
libata/IDE: remove combined mode quirk
2007-04-28 14:15:59 -04:00
rtmutex_common.h
[PATCH] pi-futex: futex_lock_pi/futex_unlock_pi support
2006-06-27 17:32:47 -07:00
rtmutex-debug.c
Remove all inclusions of <linux/config.h>
2006-10-04 03:38:54 -04:00
rtmutex-debug.h
[PATCH] lockdep: better lock debugging
2006-07-03 15:27:01 -07:00
rtmutex-tester.c
[PATCH] Add include/linux/freezer.h and move definitions from sched.h
2006-12-07 08:39:27 -08:00
rtmutex.c
[PATCH] hrtimers: namespace and enum cleanup
2007-02-16 08:13:58 -08:00
rtmutex.h
[PATCH] lockdep: better lock debugging
2006-07-03 15:27:01 -07:00
rwsem.c
Lockdep treats down_write_trylock like regular down_write
2007-05-08 11:15:09 -07:00
sched.c
Eliminate lock_cpu_hotplug in kernel/schedc
2007-05-09 12:30:51 -07:00
seccomp.c
…
signal.c
Move sig_kernel_* et al macros to linux/signal.h
2007-05-09 12:30:49 -07:00
softirq.c
[PATCH] tick-management: dyntick / highres functionality
2007-02-16 08:13:59 -08:00
softlockup.c
add touch_all_softlockup_watchdogs()
2007-05-08 11:15:06 -07:00
spinlock.c
[PATCH] lockdep: spin_lock_irqsave_nested()
2006-11-25 13:28:34 -08:00
srcu.c
[PATCH] SRCU: report out-of-memory errors
2006-10-04 07:55:30 -07:00
stacktrace.c
[PATCH] lockdep: stacktrace subsystem, core
2006-07-03 15:27:02 -07:00
stop_machine.c
Use stop_machine_run in the Intel RNG driver
2007-05-08 11:15:00 -07:00
sys_ni.c
[PATCH] Create compat_sys_migrate_pages
2006-11-03 12:27:59 -08:00
sys.c
Extend notifier_call_chain to count nr_calls made
2007-05-09 12:30:51 -07:00
sysctl.c
proc: maps protection
2007-05-08 11:15:02 -07:00
taskstats.c
KMEM_CACHE(): simplify slab cache creation
2007-05-07 12:12:55 -07:00
time.c
header cleaning: don't include smp_lock.h when not used
2007-05-08 11:15:07 -07:00
timer.c
Introduce a handy list_first_entry macro
2007-05-08 11:15:11 -07:00
tsacct.c
[PATCH] time: x86_64: split x86_64/kernel/time.c up
2007-02-16 08:14:00 -08:00
uid16.c
header cleaning: don't include smp_lock.h when not used
2007-05-08 11:15:07 -07:00
user.c
[PATCH] slab: remove kmem_cache_t
2006-12-07 08:39:25 -08:00
utsname_sysctl.c
[PATCH] sysctl: remove insert_at_head from register_sysctl
2007-02-14 08:09:59 -08:00
utsname.c
Merge sys_clone()/sys_unshare() nsproxy and namespace handling
2007-05-08 11:15:00 -07:00
wait.c
[PATCH] uninline init_waitqueue_head()
2006-07-10 13:24:25 -07:00
workqueue.c
worker_thread: fix racy try_to_freeze() usage
2007-05-09 12:30:53 -07:00