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

…

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

…

irq

Merge tag 'irqdomain-for-linus' of git://git.secretlab.ca/git/linux-2.6

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

…

async.c

…

audit_tree.c

…

audit_watch.c

…

audit.c

…

audit.h

…

auditfilter.c

…

auditsc.c

…

backtracetest.c

…

bounds.c

…

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.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

…

cpu_pm.c

…

cpu.c

…

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

…

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

…

dma.c

…

elfcore.c

…

exec_domain.c

…

exit.c

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

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

extable.c

…

fork.c

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

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

freezer.c

…

futex_compat.c

…

futex.c

…

groups.c

…

hrtimer.c

…

hung_task.c

…

irq_work.c

…

itimer.c

…

jump_label.c

…

kallsyms.c

…

Kconfig.freezer

…

Kconfig.hz

…

Kconfig.locks

…

Kconfig.preempt

…

kexec.c

…

kfifo.c

…

kmod.c

…

kprobes.c

…

ksysfs.c

…

kthread.c

…

latencytop.c

…

lockdep_internals.h

…

lockdep_proc.c

…

lockdep_states.h

…

lockdep.c

…

Makefile

…

module.c

Guard check in module loader against integer overflow

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

mutex-debug.c

…

mutex-debug.h

…

mutex.c

…

mutex.h

…

notifier.c

…

nsproxy.c

…

padata.c

…

panic.c

…

params.c

…

pid_namespace.c

…

pid.c

mm: add a low limit to alloc_large_system_hash

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

posix-cpu-timers.c

…

posix-timers.c

…

printk.c

…

profile.c

…

ptrace.c

…

range.c

…

rcu.h

…

rcupdate.c

…

rcutiny_plugin.h

…

rcutiny.c

…

rcutorture.c

…

rcutree_plugin.h

…

rcutree_trace.c

…

rcutree.c

…

rcutree.h

…

relay.c

…

res_counter.c

…

resource.c

…

rtmutex_common.h

…

rtmutex-debug.c

…

rtmutex-debug.h

…

rtmutex-tester.c

…

rtmutex.c

…

rtmutex.h

…

rwsem.c

…

seccomp.c

…

semaphore.c

…

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

…

smpboot.c

…

smpboot.h

…

softirq.c

…

spinlock.c

…

srcu.c

…

stacktrace.c

…

stop_machine.c

…

sys_ni.c

…

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

…

sysctl.c

…

taskstats.c

…

test_kprobes.c

…

time.c

…

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

…

tsacct.c

…

uid16.c

…

up.c

…

user_namespace.c

…

user-return-notifier.c

…

user.c

userns: Silence silly gcc warning.

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

utsname_sysctl.c

…

utsname.c

…

wait.c

…

watchdog.c

…

workqueue_sched.h

…

workqueue.c

lockdep: fix oops in processing workqueue

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