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| author | Oleg Nesterov <oleg@tv-sign.ru> | 2008-04-30 00:53:12 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-04-30 08:29:38 -0700 |
| commit | 2800d8d19e51414403df8144eaa214bb03400b87 (patch) | |
| tree | d5b01302c7109d7ffdc140ce8d6e31cebcdb233a | |
| parent | 376e1d2531860358c8a79fecf5f4f42994d03c4d (diff) | |
| download | op-kernel-dev-2800d8d19e51414403df8144eaa214bb03400b87.zip op-kernel-dev-2800d8d19e51414403df8144eaa214bb03400b87.tar.gz | |
document de_thread() with exit_notify() connection
Add a couple of small comments, it is not easy to see what this code does.
Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru>
Cc: Roland McGrath <roland@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| -rw-r--r-- | fs/exec.c | 2 | ||||
| -rw-r--r-- | kernel/exit.c | 1 |
2 files changed, 2 insertions, 1 deletions
@@ -798,7 +798,7 @@ static int de_thread(struct task_struct *tsk) if (!thread_group_leader(tsk)) { leader = tsk->group_leader; - sig->notify_count = -1; + sig->notify_count = -1; /* for exit_notify() */ for (;;) { write_lock_irq(&tasklist_lock); if (likely(leader->exit_state)) diff --git a/kernel/exit.c b/kernel/exit.c index 413c81e..879ed6e 100644 --- a/kernel/exit.c +++ b/kernel/exit.c @@ -877,6 +877,7 @@ static void exit_notify(struct task_struct *tsk, int group_dead) state = EXIT_DEAD; tsk->exit_state = state; + /* mt-exec, de_thread() is waiting for us */ if (thread_group_leader(tsk) && tsk->signal->notify_count < 0 && tsk->signal->group_exit_task) |
