Sukadev Bhattiprolu
2894d650cd
pid namespaces: define and use task_active_pid_ns() wrapper
...
With multiple pid namespaces, a process is known by some pid_t in every
ancestor pid namespace. Every time the process forks, the child process also
gets a pid_t in every ancestor pid namespace.
While a process is visible in >=1 pid namespaces, it can see pid_t's in only
one pid namespace. We call this pid namespace it's "active pid namespace",
and it is always the youngest pid namespace in which the process is known.
This patch defines and uses a wrapper to find the active pid namespace of a
process. The implementation of the wrapper will be changed in when support
for multiple pid namespaces are added.
Changelog:
2.6.22-rc4-mm2-pidns1:
- [Pavel Emelianov, Alexey Dobriyan] Back out the change to use
task_active_pid_ns() in child_reaper() since task->nsproxy
can be NULL during task exit (so child_reaper() continues to
use init_pid_ns).
to implement child_reaper() since init_pid_ns.child_reaper to
implement child_reaper() since tsk->nsproxy can be NULL during exit.
2.6.21-rc6-mm1:
- Rename task_pid_ns() to task_active_pid_ns() to reflect that a
process can have multiple pid namespaces.
Signed-off-by: Sukadev Bhattiprolu <sukadev@us.ibm.com>
Acked-by: Pavel Emelianov <xemul@openvz.org>
Cc: Eric W. Biederman <ebiederm@xmission.com>
Cc: Cedric Le Goater <clg@fr.ibm.com>
Cc: Dave Hansen <haveblue@us.ibm.com>
Cc: Serge Hallyn <serue@us.ibm.com>
Cc: Herbert Poetzel <herbert@13thfloor.at>
Cc: Kirill Korotaev <dev@sw.ru>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-10-19 11:53:37 -07:00
..
irq
Compile handle_percpu_irq even for uniprocessor kernels
2007-10-17 08:43:00 -07:00
power
Hibernation: Enter platform hibernation state in a consistent way
2007-10-18 14:37:20 -07:00
time
x86: C1E late detection fix. Really switch off lapic timer
2007-10-17 20:15:13 +02:00
.gitignore
acct.c
whitespace fixes: process accounting
2007-10-18 14:37:24 -07:00
audit.c
whitespace fixes: system auditing
2007-10-18 14:37:25 -07:00
audit.h
auditfilter.c
whitespace fixes: audit filtering
2007-10-18 14:37:24 -07:00
auditsc.c
whitespace fixes: syscall auditing
2007-10-18 14:37:25 -07:00
capability.c
whitespace fixes: capability syscalls
2007-10-18 14:37:25 -07:00
cgroup.c
Add cgroupstats
2007-10-19 11:53:36 -07:00
cgroup_debug.c
Task Control Groups: simple task cgroup debug info subsystem
2007-10-19 11:53:36 -07:00
compat.c
Merge ssh://master.kernel.org/pub/scm/linux/kernel/git/tglx/linux-2.6-hrt
2007-10-18 15:12:41 -07:00
configs.c
cpu.c
cpu hotplug: cpu: deliver CPU_UP_CANCELED only to NOTIFY_OKed callbacks with CPU_UP_PREPARE
2007-10-18 14:37:21 -07:00
cpu_acct.c
Task Control Groups: example CPU accounting subsystem
2007-10-19 11:53:36 -07:00
cpuset.c
Task Control Groups: make cpusets a client of cgroups
2007-10-19 11:53:36 -07:00
delayacct.c
Add scaled time to taskstats based process accounting
2007-10-18 14:37:28 -07:00
dma.c
whitespace fixes: DMA channel allocator
2007-10-18 14:37:24 -07:00
exec_domain.c
whitespace fixes: execution domains
2007-10-18 14:37:26 -07:00
exit.c
pid namespaces: round up the API
2007-10-19 11:53:37 -07:00
extable.c
fork.c
pid namespaces: round up the API
2007-10-19 11:53:37 -07:00
futex.c
sparse pointer use of zero as null
2007-10-18 14:37:31 -07:00
futex_compat.c
hrtimer.c
hrtimer: Rework hrtimer_nanosleep to make sys_compat_nanosleep easier
2007-10-18 22:54:18 +02:00
itimer.c
whitespace fixes: interval timers
2007-10-18 14:37:26 -07:00
kallsyms.c
Kconfig.hz
Kconfig.preempt
Move PREEMPT_NOTIFIERS into an always-included Kconfig
2007-10-17 08:42:55 -07:00
kexec.c
sparse pointer use of zero as null
2007-10-18 14:37:31 -07:00
kfifo.c
kmod.c
kprobes.c
ksysfs.c
add-vmcore: cleanup the coding style according to Andrew's comments
2007-10-17 08:42:54 -07:00
kthread.c
latency.c
lockdep.c
lockdep_internals.h
lockdep_proc.c
Makefile
cgroups: implement namespace tracking subsystem
2007-10-19 11:53:37 -07:00
module.c
whitespace fixes: module loading
2007-10-18 14:37:25 -07:00
mutex-debug.c
mutex-debug.h
mutex.c
mutex.h
notifier.c
Add kernel/notifier.c
2007-10-19 11:53:34 -07:00
ns_cgroup.c
cgroups: implement namespace tracking subsystem
2007-10-19 11:53:37 -07:00
nsproxy.c
pid namespaces: define and use task_active_pid_ns() wrapper
2007-10-19 11:53:37 -07:00
panic.c
whitespace fixes: panic handling
2007-10-18 14:37:25 -07:00
params.c
param_sysfs_builtin memchr argument fix
2007-10-18 14:37:21 -07:00
pid.c
pid namespaces: define and use task_active_pid_ns() wrapper
2007-10-19 11:53:37 -07:00
posix-cpu-timers.c
posix-timers.c
hrtimer: Rework hrtimer_nanosleep to make sys_compat_nanosleep easier
2007-10-18 22:54:18 +02:00
printk.c
serial: turn serial console suspend a boot rather than compile time option
2007-10-18 14:37:19 -07:00
profile.c
make kernel/profile.c:time_hook static
2007-10-17 08:42:55 -07:00
ptrace.c
rcupdate.c
Clean up duplicate includes in kernel/
2007-10-17 08:42:48 -07:00
rcutorture.c
Make rcutorture RNG use temporal entropy
2007-10-17 08:42:53 -07:00
relay.c
whitespace fixes: relayfs
2007-10-18 14:37:24 -07:00
resource.c
rtmutex-debug.c
kernel/rtmutex-debug.c: cleanups
2007-10-17 08:42:50 -07:00
rtmutex-debug.h
rtmutex-tester.c
rtmutex.c
rtmutex.h
rtmutex_common.h
rwsem.c
sched.c
Task Control Groups: example CPU accounting subsystem
2007-10-19 11:53:36 -07:00
sched_debug.c
sched: reduce schedstat variable overhead a bit
2007-10-18 21:32:56 +02:00
sched_fair.c
sched_idletask.c
sched_rt.c
sched_stats.h
sched: reduce schedstat variable overhead a bit
2007-10-18 21:32:56 +02:00
seccomp.c
signal.c
pid namespaces: round up the API
2007-10-19 11:53:37 -07:00
softirq.c
softlockup.c
softlockup: add a /proc tuning parameter
2007-10-17 08:42:47 -07:00
spinlock.c
srcu.c
stacktrace.c
stop_machine.c
sys.c
pid namespaces: round up the API
2007-10-19 11:53:37 -07:00
sys_ni.c
kernel/sys_ni.c: add dummy sys_ni_syscall() prototype
2007-10-17 08:42:55 -07:00
sysctl.c
V3 file capabilities: alter behavior of cap_setpcap
2007-10-18 14:37:24 -07:00
sysctl_check.c
V3 file capabilities: alter behavior of cap_setpcap
2007-10-18 14:37:24 -07:00
taskstats.c
Add cgroupstats
2007-10-19 11:53:36 -07:00
time.c
whitespace fixes: time syscalls
2007-10-18 14:37:24 -07:00
timer.c
Add scaled time to taskstats based process accounting
2007-10-18 14:37:28 -07:00
tsacct.c
Add scaled time to taskstats based process accounting
2007-10-18 14:37:28 -07:00
uid16.c
user.c
Merge git://git.kernel.org/pub/scm/linux/kernel/git/mingo/linux-2.6-sched
2007-10-17 09:11:18 -07:00
user_namespace.c
utsname.c
utsname_sysctl.c
wait.c
workqueue.c