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Andrea Arcangeli a247c3a97a rmap: fix walk during fork 
The below bug in fork led to the rmap walk finding the parent huge-pmd
twice instead of just once, because the anon_vma_chain objects of the
child vma still point to the vma->vm_mm of the parent.

The patch fixes it by making the rmap walk accurate during fork.  It's not
a big deal normally but it worth being accurate considering the cost is
the same.

Signed-off-by: Andrea Arcangeli <aarcange@redhat.com>
Acked-by: Johannes Weiner <jweiner@redhat.com>
Acked-by: Rik van Riel <riel@redhat.com>
Acked-by: Hugh Dickins <hughd@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-09-22 17:22:39 -07:00
..
debug Merge branch 'core-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip 2010-09-08 11:13:42 -07:00
gcov gcov: fix null-pointer dereference for certain module types 2010-09-09 18:57:23 -07:00
irq irq: Add new IRQ flag IRQF_NO_SUSPEND 2010-07-29 13:24:57 +02:00
power Merge branch 'pm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/suspend-2.6 2010-09-11 15:50:53 -07:00
time time: Workaround gcc loop optimization that causes 64bit div errors 2010-08-13 12:03:24 -07:00
trace Merge branch 'perf-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip 2010-09-10 07:31:24 -07:00
.gitignore
acct.c pass a struct path to vfs_statfs 2010-08-09 16:48:42 -04:00
async.c async: use workqueue for worker pool 2010-07-14 11:29:46 +02:00
audit_tree.c fanotify: use both marks when possible 2010-07-28 10:18:55 -04:00
audit_watch.c Revert "fsnotify: store struct file not struct path" 2010-08-12 14:23:04 -07:00
audit.c Merge branch 'for-linus' of git://git.infradead.org/users/eparis/notify 2010-08-10 11:39:13 -07:00
audit.h Audit: split audit watch Kconfig 2010-07-28 09:58:19 -04:00
auditfilter.c audit: do not get and put just to free a watch 2010-07-28 09:58:17 -04:00
auditsc.c vfs: add helpers to get root and pwd 2010-08-11 00:28:20 -04:00
backtracetest.c
bounds.c
capability.c
cgroup_freezer.c
cgroup.c cgroups: fix API thinko 2010-09-09 18:57:23 -07:00
compat.c compat: Make compat_alloc_user_space() incorporate the access_ok() 2010-09-14 16:08:45 -07:00
configs.c
cpu.c
cpuset.c Merge branch 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip 2010-08-06 09:39:22 -07:00
cred.c Add a dummy printk function for the maintenance of unused printks 2010-08-12 09:51:35 -07:00
delayacct.c
dma.c
early_res.c kmemleak: Add support for NO_BOOTMEM configurations 2010-07-19 11:54:15 +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 Fix unprotected access to task credentials in waitid() 2010-08-17 18:07:43 -07:00
extable.c
fork.c rmap: fix walk during fork 2010-09-22 17:22:39 -07:00
freezer.c
futex_compat.c
futex.c futex: futex_find_get_task remove credentails check 2010-06-30 15:43:44 -07:00
groups.c kernel/groups.c: fix integer overflow in groups_search 2010-09-09 18:57:24 -07:00
hrtimer.c gcc-4.6: kernel/*: Fix unused but set warnings 2010-09-05 14:36:58 +02:00
hung_task.c
hw_breakpoint.c hw breakpoints: Fix pid namespace bug 2010-09-17 04:42:59 +02:00
itimer.c
kallsyms.c
Kconfig.freezer
Kconfig.hz
Kconfig.locks
Kconfig.preempt
kexec.c kexec: return -EFAULT on copy_to_user() failures 2010-08-11 08:59:22 -07:00
kfifo.c kfifo: implement missing __kfifo_skip_r() 2010-08-20 09:34:54 -07:00
kmod.c Make do_execve() take a const filename pointer 2010-08-17 18:07:43 -07:00
kprobes.c
ksysfs.c
kthread.c kthread: implement kthread_data() 2010-06-29 10:07:09 +02:00
latencytop.c
lockdep_internals.h
lockdep_proc.c
lockdep_states.h
lockdep.c
Makefile Merge branch 'for-linus' of git://git.infradead.org/users/eparis/notify 2010-08-10 11:39:13 -07:00
module.c module: cleanup comments, remove noinline 2010-08-05 12:59:13 +09:30
mutex-debug.c
mutex-debug.h
mutex.c mutex: Fix annotations to include it in kernel-locking docbook 2010-09-03 08:19:51 +02:00
mutex.h
notifier.c
ns_cgroup.c
nsproxy.c
padata.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 2010-08-04 15:23:14 -07:00
panic.c lib/bug.c: add oops end marker to WARN implementation 2010-08-11 08:59:22 -07:00
params.c param: locking for kernel parameters 2010-08-11 23:04:20 +09:30
perf_event.c perf: Fix CPU hotplug 2010-09-09 20:38:52 +02:00
pid_namespace.c
pid.c pids: alloc_pidmap: remove the unnecessary boundary checks 2010-08-11 08:59:20 -07:00
pm_qos_params.c PM QoS: Correct pr_debug() misuse and improve parameter checks 2010-09-11 00:53:05 +02:00
posix-cpu-timers.c Merge branch 'writable_limits' of git://decibel.fi.muni.cz/~xslaby/linux 2010-08-10 12:07:51 -07:00
posix-timers.c posix_timer: Move copy_to_user(created_timer_id) down in timer_create() 2010-07-23 15:08:12 +02:00
printk.c gcc-4.6: printk: use stable variable to dump kmsg buffer 2010-08-09 20:45:06 -07:00
profile.c
ptrace.c ptrace: optimize exit_ptrace() for the likely case 2010-08-11 08:59:19 -07:00
range.c kernel/range: remove unused definition of ARRAY_SIZE() 2010-08-09 20:45:06 -07:00
rcupdate.c tree/tiny rcu: Add debug RCU head objects 2010-06-14 16:37:26 -07:00
rcutiny_plugin.h
rcutiny.c tree/tiny rcu: Add debug RCU head objects 2010-06-14 16:37:26 -07:00
rcutorture.c
rcutree_plugin.h
rcutree_trace.c
rcutree.c tree/tiny rcu: Add debug RCU head objects 2010-06-14 16:37:26 -07:00
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
sched_clock.c
sched_cpupri.c sched: No need for bootmem special cases 2010-07-17 12:06:22 +02:00
sched_cpupri.h sched: No need for bootmem special cases 2010-07-17 12:06:22 +02:00
sched_debug.c sched: Use correct macro to display sched_child_runs_first in /proc/sched_debug 2010-07-21 21:46:12 +02:00
sched_fair.c sched: Fix nohz balance kick 2010-09-21 13:50:50 +02:00
sched_features.h
sched_idletask.c
sched_rt.c sched: task_tick_rt: Remove the obsolete ->signal != NULL check 2010-06-18 10:46:56 +02:00
sched_stats.h sched: Remove the obsolete exit_state/signal hacks 2010-06-18 10:46:56 +02:00
sched.c sched: Fix user time incorrectly accounted as system time on 32-bit 2010-09-15 10:41:36 +02:00
seccomp.c
semaphore.c
signal.c CRED: Fix RCU warning due to previous patch fixing __task_cred()'s checks 2010-08-04 11:17:10 -07:00
smp.c
softirq.c
spinlock.c
srcu.c
stacktrace.c
stop_machine.c stop_machine: struct cpu_stopper, remove alignment padding on 64 bits 2010-08-09 20:45:06 -07:00
sys_ni.c fanotify: sys_fanotify_mark declartion 2010-07-28 09:58:55 -04:00
sys.c pid: make setpgid() system call use RCU read-side critical section 2010-08-31 17:00:18 -07:00
sysctl_binary.c
sysctl_check.c
sysctl.c gcc-4.6: kernel/*: Fix unused but set warnings 2010-09-05 14:36:58 +02:00
taskstats.c
test_kprobes.c
time.c time: Kill off CONFIG_GENERIC_TIME 2010-07-27 12:40:54 +02:00
timeconst.pl
timer.c kernel/timer.c: fix kernel-doc function parameter warning 2010-08-10 15:33:09 -07:00
tracepoint.c
tsacct.c
uid16.c
up.c
user_namespace.c user_ns: Introduce user_nsmap_uid and user_ns_map_gid. 2010-06-16 14:55:34 -07:00
user-return-notifier.c
user.c
utsname_sysctl.c
utsname.c
wait.c
watchdog.c lockup_detector: Sync touch_*_watchdog back to old semantics 2010-09-01 10:02:28 +02:00
workqueue_sched.h workqueue: implement concurrency managed dynamic worker pool 2010-06-29 10:07:14 +02:00
workqueue.c workqueue: add documentation 2010-09-13 10:26:52 +02:00