diff options
author | Eric W. Biederman <ebiederm@xmission.com> | 2007-05-09 09:34:33 (GMT) |
---|---|---|
committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-05-09 19:30:53 (GMT) |
commit | 49d769d52e16efabd3ad47b7995522fff771371d (patch) | |
tree | cf6ec2c39ae671c3f4cae34daf9d0558ca4fcf49 /kernel/exit.c | |
parent | 73c279927f89561ecb45b2dfdf9314bafcfd9f67 (diff) | |
download | linux-fsl-qoriq-49d769d52e16efabd3ad47b7995522fff771371d.tar.xz |
Change reparent_to_init to reparent_to_kthreadd
When a kernel thread calls daemonize, instead of reparenting the thread to
init reparent the thread to kthreadd next to the threads created by
kthread_create.
This is really just a stop gap until daemonize goes away, but it does
ensure no kernel threads are under init and they are all in one place that
is easy to find.
Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Cc: Oleg Nesterov <oleg@tv-sign.ru>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'kernel/exit.c')
-rw-r--r-- | kernel/exit.c | 16 |
1 files changed, 8 insertions, 8 deletions
diff --git a/kernel/exit.c b/kernel/exit.c index f5a7abb..bc982cd 100644 --- a/kernel/exit.c +++ b/kernel/exit.c @@ -26,6 +26,7 @@ #include <linux/profile.h> #include <linux/mount.h> #include <linux/proc_fs.h> +#include <linux/kthread.h> #include <linux/mempolicy.h> #include <linux/taskstats_kern.h> #include <linux/delayacct.h> @@ -254,26 +255,25 @@ static int has_stopped_jobs(struct pid *pgrp) } /** - * reparent_to_init - Reparent the calling kernel thread to the init task of the pid space that the thread belongs to. + * reparent_to_kthreadd - Reparent the calling kernel thread to kthreadd * * If a kernel thread is launched as a result of a system call, or if - * it ever exits, it should generally reparent itself to init so that - * it is correctly cleaned up on exit. + * it ever exits, it should generally reparent itself to kthreadd so it + * isn't in the way of other processes and is correctly cleaned up on exit. * * The various task state such as scheduling policy and priority may have * been inherited from a user process, so we reset them to sane values here. * - * NOTE that reparent_to_init() gives the caller full capabilities. + * NOTE that reparent_to_kthreadd() gives the caller full capabilities. */ -static void reparent_to_init(void) +static void reparent_to_kthreadd(void) { write_lock_irq(&tasklist_lock); ptrace_unlink(current); /* Reparent to init */ remove_parent(current); - current->parent = child_reaper(current); - current->real_parent = child_reaper(current); + current->real_parent = current->parent = kthreadd_task; add_parent(current); /* Set the exit signal to SIGCHLD so we signal init on exit */ @@ -400,7 +400,7 @@ void daemonize(const char *name, ...) current->files = init_task.files; atomic_inc(¤t->files->count); - reparent_to_init(); + reparent_to_kthreadd(); } EXPORT_SYMBOL(daemonize); |