Pavel Emelianov 428e6ce023 Lockdep treats down_write_trylock like regular down_write ...

This causes constructions like

down_write(&mm1->mmap_sem);
if (down_write_trylock(&mm2->mmap_sem)) {
       ...
       up_write(&mm2->mmap_sem);
}
up_write(&mm1->mmap_sem);

generate a lockdep warning about circular locking dependence.

Call rwsem_acquire() with trylock set to 1.

Cc: Ingo Molnar <mingo@elte.hu>
Cc: Arjan van de Ven <arjan@infradead.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

2007-05-08 11:15:09 -07:00

..

irq

IRQ: check for PERCPU flag only when adding first irqaction

2007-05-08 11:15:06 -07:00

power

header cleaning: don't include smp_lock.h when not used

2007-05-08 11:15:07 -07:00

time

Fix race between cat /proc/*/wchan and rmmod et al

2007-05-08 11:15:08 -07:00

.gitignore

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acct.c

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audit.c

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audit.h

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auditfilter.c

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auditsc.c

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capability.c

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compat.c

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configs.c

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cpu.c

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cpuset.c

header cleaning: don't include smp_lock.h when not used

2007-05-08 11:15:07 -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

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exec_domain.c

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exit.c

header cleaning: don't include smp_lock.h when not used

2007-05-08 11:15:07 -07:00

extable.c

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fork.c

header cleaning: don't include smp_lock.h when not used

2007-05-08 11:15:07 -07:00

futex_compat.c

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futex.c

futex: restartable futex_wait

2007-05-08 11:15:03 -07:00

hrtimer.c

[NET]: Fix networking compilation errors

2007-04-27 15:31:24 -07:00

itimer.c

header cleaning: don't include smp_lock.h when not used

2007-05-08 11:15:07 -07:00

kallsyms.c

Fix race between cat /proc/slab_allocators and rmmod

2007-05-08 11:15:08 -07:00

Kconfig.hz

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Kconfig.preempt

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kexec.c

kdump/kexec: calculate note size at compile time

2007-05-08 11:15:07 -07:00

kfifo.c

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kmod.c

Fix kevent's childs priority greediness

2007-05-08 11:15:07 -07:00

kprobes.c

Simplify kallsyms_lookup()

2007-05-08 11:15:08 -07:00

ksysfs.c

remove "struct subsystem" as it is no longer needed

2007-05-02 18:57:59 -07:00

kthread.c

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latency.c

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lockdep_internals.h

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lockdep_proc.c

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lockdep.c

Simplify kallsyms_lookup()

2007-05-08 11:15:08 -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

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mutex-debug.h

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mutex.c

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mutex.h

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nsproxy.c

Merge sys_clone()/sys_unshare() nsproxy and namespace handling

2007-05-08 11:15:00 -07:00

panic.c

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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

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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

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ptrace.c

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rcupdate.c

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rcutorture.c

rcutorture: Mark rcu_torture_init as __init

2007-05-08 11:15:00 -07:00

relay.c

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resource.c

libata/IDE: remove combined mode quirk

2007-04-28 14:15:59 -04:00

rtmutex_common.h

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rtmutex-debug.c

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rtmutex-debug.h

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rtmutex-tester.c

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rtmutex.c

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rtmutex.h

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rwsem.c

Lockdep treats down_write_trylock like regular down_write

2007-05-08 11:15:09 -07:00

sched.c

add touch_all_softlockup_watchdogs()

2007-05-08 11:15:06 -07:00

seccomp.c

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signal.c

header cleaning: don't include smp_lock.h when not used

2007-05-08 11:15:07 -07:00

softirq.c

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softlockup.c

add touch_all_softlockup_watchdogs()

2007-05-08 11:15:06 -07:00

spinlock.c

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srcu.c

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stacktrace.c

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stop_machine.c

Use stop_machine_run in the Intel RNG driver

2007-05-08 11:15:00 -07:00

sys_ni.c

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sys.c

remove software_suspend()

2007-05-07 12:12:59 -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

Move timekeeping code to timekeeping.c

2007-05-08 11:15:06 -07:00

tsacct.c

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uid16.c

header cleaning: don't include smp_lock.h when not used

2007-05-08 11:15:07 -07:00

user.c

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utsname_sysctl.c

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utsname.c

Merge sys_clone()/sys_unshare() nsproxy and namespace handling

2007-05-08 11:15:00 -07:00

wait.c

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workqueue.c

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