Rafael J. Wysocki
2aede851dd
PM / Hibernate: Freeze kernel threads after preallocating memory ...
There is a problem with the current ordering of hibernate code which
leads to deadlocks in some filesystems' memory shrinkers. Namely,
some filesystems use freezable kernel threads that are inactive when
the hibernate memory preallocation is carried out. Those same
filesystems use memory shrinkers that may be triggered by the
hibernate memory preallocation. If those memory shrinkers wait for
the frozen kernel threads, the hibernate process deadlocks (this
happens with XFS, for one example).
Apparently, it is not technically viable to redesign the filesystems
in question to avoid the situation described above, so the only
possible solution of this issue is to defer the freezing of kernel
threads until the hibernate memory preallocation is done, which is
implemented by this change.
Unfortunately, this requires the memory preallocation to be done
before the "prepare" stage of device freeze, so after this change the
only way drivers can allocate additional memory for their freeze
routines in a clean way is to use PM notifiers.
Reported-by: Christoph <cr2005@u-club.de>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
2011-10-16 23:28:52 +02:00
Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jwessel/linux-2.6-kgdb
2011-08-01 13:39:40 -10:00
perf_event: Fix broken calc_timer_values()
2011-08-31 15:56:29 +02:00
gcov: disable CONSTRUCTORS for UML
2011-07-26 16:49:45 -07:00
irq: Fix check for already initialized irq_domain in irq_domain_add
2011-09-20 12:16:22 +02:00
PM / Hibernate: Freeze kernel threads after preallocating memory
2011-10-16 23:28:52 +02:00
alarmtimers: Avoid possible denial of service with high freq periodic timers
2011-08-10 10:26:09 -07:00
Merge branch 'pm-runtime' into pm-for-linus
2011-10-07 23:16:55 +02:00
async: Fixed an include coding style issue
2011-06-14 22:48:46 -04:00
atomic: use <linux/atomic.h>
2011-07-26 16:49:47 -07:00
audit_tree,rcu: Convert call_rcu(__put_tree) to kfree_rcu()
2011-07-20 14:10:11 -07:00
kill path_lookup()
2011-03-14 09:15:23 -04:00
netlink: kill loginuid/sessionid/sid members from struct netlink_skb_parms
2011-03-03 10:55:40 -08:00
atomic: use <linux/atomic.h>
2011-07-26 16:49:47 -07:00
memcg: remove direct page_cgroup-to-page pointer
2011-03-23 19:46:28 -07:00
Merge branch 'master' into next
2011-05-19 18:51:57 +10:00
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/security-testing-2.6
2011-07-27 19:26:38 -07:00
cgroups: add per-thread subsystem callbacks
2011-05-26 17:12:34 -07:00
Merge branch 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-2.6
2011-07-30 00:08:53 -07:00
kernel/configs.c: include MODULE_*() when CONFIG_IKCONFIG_PROC=n
2011-07-25 20:57:15 -07:00
Fix common misspellings
2011-03-31 11:26:23 -03:00
atomic: use <linux/atomic.h>
2011-07-26 16:49:47 -07:00
crash_dump: export is_kdump_kernel to modules, consolidate elfcorehdr_addr, setup_elfcorehdr and saved_max_pfn
2011-03-23 19:47:19 -07:00
move RLIMIT_NPROC check from set_user() to do_execve_common()
2011-08-11 11:24:42 -07:00
KVM: Steal time implementation
2011-07-14 12:59:14 +03:00
ipc: introduce shm_rmid_forced sysctl
2011-07-26 16:49:44 -07:00
extable, core_kernel_data(): Make sure all archs define _sdata
2011-05-20 08:56:56 +02:00
move RLIMIT_NPROC check from set_user() to do_execve_common()
2011-08-11 11:24:42 -07:00
Freezer: Use SMP barriers
2011-05-17 23:19:17 +02:00
Merge branch 'linus' into core/urgent
2011-08-04 09:09:27 +02:00
userns: user namespaces: convert several capable() calls
2011-03-23 19:47:08 -07:00
userns: user namespaces: convert several capable() calls
2011-03-23 19:47:08 -07:00
hrtimers: Fix typo causing erratic timers
2011-05-25 15:31:58 -07:00
watchdog, hung_task_timeout: Add Kconfig configurable default
2011-04-28 09:13:17 +02:00
irq_work: Use per cpu atomics instead of regular atomics
2010-12-18 15:54:48 +01:00
jump_label: Fix jump_label update for modules
2011-06-29 09:59:17 -04:00
Merge branch 'core-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
2011-03-25 17:52:22 -07:00
arch:Kconfig.locks Remove unused config option.
2011-04-10 17:01:05 +02:00
sched: Isolate preempt counting in its own config option
2011-06-10 15:15:40 +02:00
treewide: Convert uses of struct resource to resource_size(ptr)
2011-06-10 14:55:36 +02:00
Boot up with usermodehelper disabled
2011-08-03 22:03:29 -10:00
kprobes: Return -ENOENT if probe point doesn't exist
2011-07-15 15:11:47 -04:00
kernel/ksysfs.c: expose file_caps_enabled in sysfs
2011-04-19 16:45:51 -07:00
cpuset: Fix cpuset_cpus_allowed_fallback(), don't update tsk->rt.nr_cpus_allowed
2011-05-28 17:02:57 +02:00
Fix common misspellings
2011-03-31 11:26:23 -03:00
lockdep: Fix wrong assumption in match_held_lock
2011-08-09 11:57:35 +02:00
lockdep: Remove unused 'factor' variable from lockdep_stats_show()
2011-03-23 13:54:47 +01:00
PM QoS: Move and rename the implementation files
2011-08-25 15:35:03 +02:00
module: add /sys/module/<name>/uevent files
2011-07-24 22:06:04 +09:30
mutex: Use p->on_cpu for the adaptive spin
2011-04-14 08:52:33 +02:00
mutex: Use p->on_cpu for the adaptive spin
2011-04-14 08:52:33 +02:00
lockdep, mutex: provide mutex_lock_nest_lock
2011-05-25 08:39:17 -07:00
mutex: Use p->on_cpu for the adaptive spin
2011-04-14 08:52:33 +02:00
notifiers: sys: move reboot notifiers into reboot.h
2011-07-25 20:57:14 -07:00
make sure that nsproxy_cache is initialized early enough
2011-07-20 01:44:07 -04:00
Fix common misspellings
2011-03-31 11:26:23 -03:00
panic: panic=-1 for immediate reboot
2011-07-26 16:49:45 -07:00
module: add /sys/module/<name>/uevent files
2011-07-24 22:06:04 +09:30
rcu: treewide: Do not use rcu_read_lock_held when calling rcu_dereference_check
2011-07-08 22:21:58 +02:00
pidns: call pid_ns_prepare_proc() from create_pid_namespace()
2011-03-23 19:46:58 -07:00
posix-cpu-timers: Cure SMP wobbles
2011-09-30 14:07:06 +02:00
posix-timers: RCU conversion
2011-05-24 12:10:51 +02:00
kernel/printk: do not turn off bootconsole in printk_late_init() if keep_bootcon
2011-08-25 16:25:34 -07:00
kernel/profile.c: remove some duplicate code from profile_hits()
2011-05-26 17:12:37 -07:00
ptrace: PTRACE_LISTEN forgets to unlock ->siglock
2011-09-25 11:02:00 -07:00
kernel/range.c: fix clean_sort_range() for the case of full array
2010-11-12 07:55:31 -08:00
atomic: use <linux/atomic.h>
2011-07-26 16:49:47 -07:00
sanitize <linux/prefetch.h> usage
2011-05-20 12:50:29 -07:00
rcu: Converge TINY_RCU expedited and normal boosting
2011-05-05 23:16:58 -07:00
atomic: use <linux/atomic.h>
2011-07-26 16:49:47 -07:00
rcu: Prevent RCU callbacks from executing before scheduler initialized
2011-07-13 08:17:56 -07:00
rcu: Move RCU_BOOST #ifdefs to header file
2011-06-16 16:12:05 -07:00
softirq,rcu: Inform RCU of irq_exit() activity
2011-07-20 10:50:12 -07:00
atomic: use <linux/atomic.h>
2011-07-26 16:49:47 -07:00
memcg: res_counter_read_u64(): fix potential races on 32-bit machines
2011-03-23 19:46:22 -07:00
Resource: fix wrong resource window calculation
2011-09-29 20:04:34 -07:00
rtmutex: Simplify PI algorithm and make highest prio task get lock
2011-01-27 21:13:51 -05:00
rtmutex: tester: Remove the remaining BKL leftovers
2011-02-22 22:07:22 +01:00
plist: Remove the need to supply locks to plist heads
2011-07-08 14:02:53 +02:00
rtmutex: Simplify PI algorithm and make highest prio task get lock
2011-01-27 21:13:51 -05:00
atomic: use <linux/atomic.h>
2011-07-26 16:49:47 -07:00
posix-cpu-timers: Cure SMP wobbles
2011-09-30 14:07:06 +02:00
Fix common misspellings
2011-03-31 11:26:23 -03:00
sched: Skip autogroup when looking for all rt sched groups
2011-07-01 10:39:08 +02:00
sched: Add some clock info to sched_debug
2010-11-23 10:29:08 +01:00
sched: Get rid of lock_depth
2011-04-24 13:18:38 +02:00
sched: Cleanup duplicate local variable in [enqueue|dequeue]_task_fair
2011-07-22 12:47:22 +02:00
Merge branch 'kvm-updates/3.1' of git://git.kernel.org/pub/scm/virt/kvm/kvm
2011-07-24 09:07:03 -07:00
sched: Drop the rq argument to sched_class::select_task_rq()
2011-04-14 08:52:36 +02:00
sched/rt: Migrate equal priority tasks to available CPUs
2011-09-18 13:48:56 +02:00
sched: More sched_domain iterations fixes
2011-05-28 17:02:54 +02:00
sched: Drop the rq argument to sched_class::select_task_rq()
2011-04-14 08:52:36 +02:00
signals: sys_ssetmask/sys_rt_sigsuspend should use set_current_blocked()
2011-07-27 12:53:36 -07:00
generic-ipi: Fix kexec boot crash by initializing call_single_queue before enabling interrupts
2011-06-17 10:17:12 +02:00
softirq,rcu: Inform RCU of irq_exit() activity
2011-07-20 10:50:12 -07:00
rcu: demote SRCU_SYNCHRONIZE_DELAY from kernel-parameter status
2011-01-14 04:56:49 -08:00
stack_trace: Add weak save_stack_trace_regs()
2011-06-14 22:48:52 -04:00
atomic: use <linux/atomic.h>
2011-07-26 16:49:47 -07:00
Add a personality to report 2.6.x version numbers
2011-08-25 10:17:28 -07:00
All Arch: remove linkage for sys_nfsservctl system call
2011-08-26 15:09:58 -07:00
sysctl,rcu: Convert call_rcu(free_head) to kfree
2011-07-20 14:10:18 -07:00
xfs: remove subdirectories
2011-08-12 16:21:35 -05:00
xfs: remove subdirectories
2011-08-12 16:21:35 -05:00
Make TASKSTATS require root access
2011-09-19 17:04:37 -07:00
Merge branch 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
2011-03-15 18:53:35 -07:00
timers: Consider slack value in mod_timer()
2011-06-03 15:02:32 +02:00
jump label: Introduce static_branch() interface
2011-04-04 12:48:08 -04:00
Make taskstats round statistics down to nearest 1k bytes/events
2011-09-19 17:10:57 -07:00
userns: user namespaces: convert several capable() calls
2011-03-23 19:47:08 -07:00
Fix common misspellings
2011-03-31 11:26:23 -03:00
userns: add a user_namespace as creator/owner of uts_namespace
2011-03-23 19:46:59 -07:00
user_ns: improve the user_ns on-the-slab packaging
2011-01-13 08:03:18 -08:00
ns proc: Add support for the uts namespace
2011-05-10 14:35:35 -07:00
Fix common misspellings
2011-03-31 11:26:23 -03:00
perf, x86: P4 PMU - Introduce event alias feature
2011-07-14 17:25:04 -04:00
workqueue: lock cwq access in drain_workqueue
2011-09-14 18:09:38 -07:00
2aede851dd