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| author | Jens Axboe <axboe@kernel.dk> | 2012-07-30 09:03:10 +0200 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2012-07-30 09:03:10 +0200 |
| commit | 72ea1f74fcdf874cca6d2c0962379523bbd99e2c (patch) | |
| tree | 4c67be6c73356086ff44ef1b8b1c9479702689ca /kernel/pid_namespace.c | |
| parent | Merge branch 'upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/jiko... (diff) | |
| parent | drbd: announce FLUSH/FUA capability to upper layers (diff) | |
| download | linux-72ea1f74fcdf874cca6d2c0962379523bbd99e2c.tar.xz linux-72ea1f74fcdf874cca6d2c0962379523bbd99e2c.zip | |
Merge branch 'for-jens' of git://git.drbd.org/linux-drbd into for-3.6/drivers
Diffstat (limited to 'kernel/pid_namespace.c')
| -rw-r--r-- | kernel/pid_namespace.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/kernel/pid_namespace.c b/kernel/pid_namespace.c index 16b20e38c4a1..b3c7fd554250 100644 --- a/kernel/pid_namespace.c +++ b/kernel/pid_namespace.c @@ -184,11 +184,31 @@ void zap_pid_ns_processes(struct pid_namespace *pid_ns) } read_unlock(&tasklist_lock); + /* Firstly reap the EXIT_ZOMBIE children we may have. */ do { clear_thread_flag(TIF_SIGPENDING); rc = sys_wait4(-1, NULL, __WALL, NULL); } while (rc != -ECHILD); + /* + * sys_wait4() above can't reap the TASK_DEAD children. + * Make sure they all go away, see __unhash_process(). + */ + for (;;) { + bool need_wait = false; + + read_lock(&tasklist_lock); + if (!list_empty(¤t->children)) { + __set_current_state(TASK_UNINTERRUPTIBLE); + need_wait = true; + } + read_unlock(&tasklist_lock); + + if (!need_wait) + break; + schedule(); + } + if (pid_ns->reboot) current->signal->group_exit_code = pid_ns->reboot; |