Johannes Weiner 91c63734f6 kernel: cgroup: push rcu read locking from css_is_ancestor() to callsite ...

Library functions should not grab locks when the callsites can do it,
even if the lock nests like the rcu read-side lock does.

Push the rcu_read_lock() from css_is_ancestor() to its single user,
mem_cgroup_same_or_subtree() in preparation for another user that may
already hold the rcu read-side lock.

Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>
Cc: Konstantin Khlebnikov <khlebnikov@openvz.org>
Acked-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Acked-by: Michal Hocko <mhocko@suse.cz>
Acked-by: Li Zefan <lizf@cn.fujitsu.com>
Cc: Li Zefan <lizf@cn.fujitsu.com>
Cc: Tejun Heo <tj@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

2012-05-29 16:22:20 -07:00

..

debug

KGDB/KDB regression fixes

2012-04-04 17:26:08 -07:00

events

Merge branch 'perf-uprobes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2012-05-24 11:39:34 -07:00

gcov

gcov: disable CONSTRUCTORS for UML

2011-07-26 16:49:45 -07:00

irq

irqdomain changes for v3.5 merge window

2012-05-24 13:55:24 -07:00

power

PM / Hibernate: Use get_gendisk to verify partition if resume_file is integer format

2012-05-18 20:44:59 +02:00

sched

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace

2012-05-23 17:42:39 -07:00

time

Merge branch 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2012-05-24 13:29:46 -07:00

trace

Merge branch 'perf-uprobes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2012-05-24 11:39:34 -07:00

.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_tree.c

audit_tree,rcu: Convert call_rcu(__put_tree) to kfree_rcu()

2011-07-20 14:10:11 -07:00

audit_watch.c

kill path_lookup()

2011-03-14 09:15:23 -04:00

audit.c

constify path argument of audit_log_d_path()

2012-03-20 21:29:40 -04:00

audit.h

audit: remove AUDIT_SETUP_CONTEXT as it isn't used

2012-01-17 16:16:57 -05:00

auditfilter.c

audit: allow interfield comparison in audit rules

2012-01-17 16:17:01 -05:00

auditsc.c

seccomp: remove duplicated failure logging

2012-04-14 11:13:20 +10:00

backtracetest.c

…

bounds.c

memcg: remove direct page_cgroup-to-page pointer

2011-03-23 19:46:28 -07:00

capability.c

userns: Teach inode_capable to understand inodes whose uids map to other namespaces.

2012-05-15 14:59:24 -07:00

cgroup_freezer.c

cgroup: convert all non-memcg controllers to the new cftype interface

2012-04-01 12:09:55 -07:00

cgroup.c

kernel: cgroup: push rcu read locking from css_is_ancestor() to callsite

2012-05-29 16:22:20 -07:00

compat.c

new helper: sigsuspend()

2012-05-21 23:52:30 -04:00

configs.c

kernel/configs.c: include MODULE_*() when CONFIG_IKCONFIG_PROC=n

2011-07-25 20:57:15 -07:00

cpu_pm.c

cpu_pm: call notifiers during suspend

2011-09-23 12:05:29 +05:30

cpu.c

smp, idle: Allocate idle thread for each possible cpu during boot

2012-05-03 19:32:34 +02:00

cpuset.c

Merge branch 'for-3.5' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup

2012-05-22 17:40:19 -07:00

crash_dump.c

Merge branch 'modsplit-Oct31_2011' of git://git.kernel.org/pub/scm/linux/kernel/git/paulg/linux

2011-11-06 19:44:47 -08:00

cred.c

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace

2012-05-23 17:42:39 -07:00

delayacct.c

KVM: Steal time implementation

2011-07-14 12:59:14 +03:00

dma.c

Remove all #inclusions of asm/system.h

2012-03-28 18:30:03 +01:00

elfcore.c

…

exec_domain.c

sys_personality: remove the bogus checks in sys_personality()->__set_personality() path

2010-08-09 20:45:05 -07:00

exit.c

cred: use correct cred accessor with regards to rcu read lock

2012-05-17 16:50:06 -06:00

extable.c

extable: Skip sorting if sorted at build time.

2012-04-19 15:06:55 -07:00

fork.c

mm/fork: fix overflow in vma length when copying mmap on clone

2012-05-29 16:22:19 -07:00

freezer.c

PM / Freezer: Remove references to TIF_FREEZE in comments

2012-03-04 23:08:54 +01:00

futex_compat.c

futex: Mark get_robust_list as deprecated

2012-03-29 11:37:17 +02:00

futex.c

futex: Mark get_robust_list as deprecated

2012-03-29 11:37:17 +02:00

groups.c

userns: Convert in_group_p and in_egroup_p to use kgid_t

2012-05-03 03:29:33 -07:00

hrtimer.c

Merge branch 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2011-11-28 08:43:52 -08:00

hung_task.c

hung task debugging: Inject NMI when hung and going to panic

2012-04-25 12:39:25 +02:00

irq_work.c

irq_work: fix compile failure on tile from missing include

2012-04-13 13:15:16 -04:00

itimer.c

itimer: Use printk_once instead of WARN_ONCE

2012-04-10 11:00:30 +02:00

jump_label.c

static keys: Inline the static_key_enabled() function

2012-02-28 20:01:08 +01:00

kallsyms.c

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

Kconfig.freezer

…

Kconfig.hz

…

Kconfig.locks

locking/kconfig: Simplify INLINE_SPIN_UNLOCK usage

2012-03-23 13:18:57 +01:00

Kconfig.preempt

locking/kconfig: Simplify INLINE_SPIN_UNLOCK usage

2012-03-23 13:18:57 +01:00

kexec.c

Merge branch 'akpm' (Andrew's patch-bomb)

2012-03-28 17:19:28 -07:00

kfifo.c

[media] kernel:kfifo: export __kfifo_max_r symbol

2012-04-11 18:24:37 -03:00

kmod.c

PM / Sleep: Mitigate race between the freezer and request_firmware()

2012-03-28 23:30:28 +02:00

kprobes.c

kprobes: return proper error code from register_kprobe()

2012-03-05 15:49:42 -08:00

ksysfs.c

kernel: ksysfs.c is implicitly using stat.h

2011-10-31 09:20:13 -04:00

kthread.c

freezer: kill unused set_freezable_with_signal()

2011-11-23 09:28:17 -08:00

latencytop.c

kernel: Map most files to use export.h instead of module.h

2011-10-31 09:20:12 -04:00

lockdep_internals.h

…

lockdep_proc.c

kernel: Map most files to use export.h instead of module.h

2011-10-31 09:20:12 -04:00

lockdep_states.h

…

lockdep.c

lockdep: Add CPU-idle/offline warning to lockdep-RCU splat

2012-02-21 09:06:06 -08:00

Makefile

smp: Add generic smpboot facility

2012-04-26 12:06:09 +02:00

module.c

Guard check in module loader against integer overflow

2012-05-23 22:28:53 +09:30

mutex-debug.c

kernel: Map most files to use export.h instead of module.h

2011-10-31 09:20:12 -04:00

mutex-debug.h

mutex: Use p->on_cpu for the adaptive spin

2011-04-14 08:52:33 +02:00

mutex.c

sched/rt: Use schedule_preempt_disabled()

2012-03-01 10:28:03 +01:00

mutex.h

mutex: Use p->on_cpu for the adaptive spin

2011-04-14 08:52:33 +02:00

notifier.c

kernel: Map most files to use export.h instead of module.h

2011-10-31 09:20:12 -04:00

nsproxy.c

kernel: Map most files to use export.h instead of module.h

2011-10-31 09:20:12 -04:00

padata.c

padata: Fix cpu hotplug

2012-03-29 19:52:46 +08:00

panic.c

panic: fix stack dump print on direct call to panic()

2012-04-12 13:12:12 -07:00

params.c

params: replace printk(KERN_<LVL>...) with pr_<lvl>(...)

2012-05-04 17:28:18 -07:00

pid_namespace.c

pidns: add reboot_pid_ns() to handle the reboot syscall

2012-03-28 17:14:36 -07:00

pid.c

mm: add a low limit to alloc_large_system_hash

2012-05-24 00:28:21 -04:00

posix-cpu-timers.c

[S390] cputime: add sparse checking and cleanup

2011-12-15 14:56:19 +01:00

posix-timers.c

kernel: Map most files to use export.h instead of module.h

2011-10-31 09:20:12 -04:00

printk.c

printk() - isolate KERN_CONT users from ordinary complete lines

2012-05-14 12:36:45 -07:00

profile.c

kernel: Map most files to use export.h instead of module.h

2011-10-31 09:20:12 -04:00

ptrace.c

userns: Convert ptrace, kill, set_priority permission checks to work with kuids and kgids

2012-05-03 03:28:51 -07:00

range.c

range: fix bogus misuse of module.h to get printk()

2011-10-31 09:20:11 -04:00

rcu.h

rcu: Allow nesting of rcu_idle_enter() and rcu_idle_exit()

2012-02-21 09:06:12 -08:00

rcupdate.c

rcu: Make exit_rcu() more precise and consolidate

2012-05-02 14:48:27 -07:00

rcutiny_plugin.h

rcu: Make exit_rcu() more precise and consolidate

2012-05-02 14:48:27 -07:00

rcutiny.c

rcu: Add RCU_NONIDLE() for idle-loop RCU read-side critical sections

2012-02-21 09:06:13 -08:00

rcutorture.c

rcu: Add rcutorture test for call_srcu()

2012-04-30 10:48:26 -07:00

rcutree_plugin.h

Merge branches 'barrier.2012.05.09a', 'fixes.2012.04.26a', 'inline.2012.05.02b' and 'srcu.2012.05.07b' into HEAD

2012-05-11 10:14:21 -07:00

rcutree_trace.c

rcu: Make rcu_barrier() less disruptive

2012-05-09 14:27:54 -07:00

rcutree.c

Merge branch 'rcu/next' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu into core/rcu

2012-05-14 08:41:46 +02:00

rcutree.h

Merge branches 'barrier.2012.05.09a', 'fixes.2012.04.26a', 'inline.2012.05.02b' and 'srcu.2012.05.07b' into HEAD

2012-05-11 10:14:21 -07:00

relay.c

relay: prevent integer overflow in relay_open()

2012-02-10 09:04:49 +01:00

res_counter.c

res_counter: Account max_usage when calling res_counter_charge_nofail()

2012-04-27 14:37:09 -07:00

resource.c

kernel/resource.c: move EXPORT_SYMBOL right after definition

2012-02-03 23:37:07 +01:00

rtmutex_common.h

rtmutex: Simplify PI algorithm and make highest prio task get lock

2011-01-27 21:13:51 -05:00

rtmutex-debug.c

lockdep, rtmutex, bug: Show taint flags on error

2011-12-06 08:16:49 +01:00

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

…

rwsem.c

Remove all #inclusions of asm/system.h

2012-03-28 18:30:03 +01:00

seccomp.c

seccomp: fix build warnings when there is no CONFIG_SECCOMP_FILTER

2012-04-18 12:24:52 +10:00

semaphore.c

semaphore: fix improper comment reference to mutex

2012-04-05 17:15:55 -07:00

signal.c

Merge branch 'perf-uprobes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2012-05-24 11:39:34 -07:00

smp.c

smp: Implement kick_all_cpus_sync()

2012-05-08 12:35:06 +02:00

smpboot.c

smp, idle: Allocate idle thread for each possible cpu during boot

2012-05-03 19:32:34 +02:00

smpboot.h

smp: Fix idle_thread_init() inline stub

2012-05-04 12:52:25 +02:00

softirq.c

Merge branch 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2012-03-20 10:32:09 -07:00

spinlock.c

locking/kconfig: Simplify INLINE_SPIN_UNLOCK usage

2012-03-23 13:18:57 +01:00

srcu.c

rcu: Implement per-domain single-threaded call_srcu() state machine

2012-04-30 10:48:25 -07:00

stacktrace.c

kernel: Map most files to use export.h instead of module.h

2011-10-31 09:20:12 -04:00

stop_machine.c

Merge branch 'modsplit-Oct31_2011' of git://git.kernel.org/pub/scm/linux/kernel/git/paulg/linux

2011-11-06 19:44:47 -08:00

sys_ni.c

Cross Memory Attach

2011-10-31 17:30:44 -07:00

sys.c

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace

2012-05-23 17:42:39 -07:00

sysctl_binary.c

binary_sysctl(): fix memory leak

2011-12-20 10:25:04 -08:00

sysctl.c

sysctl: fix write access to dmesg_restrict/kptr_restrict

2012-04-05 14:51:43 +10:00

taskstats.c

Make TASKSTATS require root access

2011-09-19 17:04:37 -07:00

test_kprobes.c

kprobes: Fix selftest to clear flags field for reusing probes

2010-10-14 08:55:27 +02:00

time.c

time: Remove bogus comments

2012-03-15 18:17:55 -07:00

timeconst.pl

…

timer.c

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace

2012-05-23 17:42:39 -07:00

tracepoint.c

static keys: Introduce 'struct static_key', static_key_true()/false() and static_key_slow_[inc|dec]()

2012-02-24 10:05:59 +01:00

tsacct.c

[S390] cputime: add sparse checking and cleanup

2011-12-15 14:56:19 +01:00

uid16.c

userns: Convert setting and getting uid and gid system calls to use kuid and kgid

2012-05-03 03:28:41 -07:00

up.c

kernel: Map most files to use export.h instead of module.h

2011-10-31 09:20:12 -04:00

user_namespace.c

userns: Store uid and gid values in struct cred with kuid_t and kgid_t types

2012-05-03 03:28:38 -07:00

user-return-notifier.c

kernel: Map most files to use export.h instead of module.h

2011-10-31 09:20:12 -04:00

user.c

userns: Silence silly gcc warning.

2012-05-19 15:44:40 -06:00

utsname_sysctl.c

Merge branch 'modsplit-Oct31_2011' of git://git.kernel.org/pub/scm/linux/kernel/git/paulg/linux

2011-11-06 19:44:47 -08:00

utsname.c

userns: Use cred->user_ns instead of cred->user->user_ns

2012-04-07 16:55:51 -07:00

wait.c

lockdep/waitqueues: Add better annotation

2011-12-21 10:07:39 +01:00

watchdog.c

watchdog: add check for suspended vm in softlockup detector

2012-04-08 12:49:03 +03:00

workqueue_sched.h

…

workqueue.c

lockdep: fix oops in processing workqueue

2012-05-15 08:08:31 -07:00