TO: Oleg Nesterov <[email protected]>
CC: Johannes Weiner <[email protected]>
CC: Andrew Morton <[email protected]>
CC: Linux Memory Management List <[email protected]>
tree: git://git.cmpxchg.org/linux-mmotm.git master
head: e668fb4c5c5e6de5b9432bd36d83b3a0b4ce78e8
commit: be946c5700e61ff5b193770e852a1df460ebc508 [173/306] exit: reparent:
cleanup the changing of ->parent
:::::: branch date: 33 hours ago
:::::: commit date: 33 hours ago
kernel/exit.c:574 forget_original_parent() warn: add some parenthesis here?
git remote add mmotm git://git.cmpxchg.org/linux-mmotm.git
git remote update mmotm
git checkout be946c5700e61ff5b193770e852a1df460ebc508
vim +574 kernel/exit.c
762a24bee Oleg Nesterov 2007-10-18 558 static void
forget_original_parent(struct task_struct *father)
^1da177e4 Linus Torvalds 2005-04-16 559 {
be946c570 Oleg Nesterov 2014-11-13 560 struct task_struct *p, *t, *n,
*reaper;
5dfc80be7 Oleg Nesterov 2009-04-02 561 LIST_HEAD(dead_children);
762a24bee Oleg Nesterov 2007-10-18 562
762a24bee Oleg Nesterov 2007-10-18 563 write_lock_irq(&tasklist_lock);
c7e49c148 Oleg Nesterov 2010-08-10 564 /*
c7e49c148 Oleg Nesterov 2010-08-10 565 * Note that exit_ptrace() and
find_new_reaper() might
c7e49c148 Oleg Nesterov 2010-08-10 566 * drop tasklist_lock and
reacquire it.
c7e49c148 Oleg Nesterov 2010-08-10 567 */
c7e49c148 Oleg Nesterov 2010-08-10 568 exit_ptrace(father);
950bbabb5 Oleg Nesterov 2008-09-02 569 reaper =
find_new_reaper(father);
762a24bee Oleg Nesterov 2007-10-18 570
03ff17979 Matthias Kaehlcke 2007-10-18 571 list_for_each_entry_safe(p, n,
&father->children, sibling) {
be946c570 Oleg Nesterov 2014-11-13 572 for_each_thread(p, t) {
9cd80bbb0 Oleg Nesterov 2009-12-17 573 t->real_parent
= reaper;
be946c570 Oleg Nesterov 2014-11-13 @574
BUG_ON(!t->ptrace != (t->parent == father));
be946c570 Oleg Nesterov 2014-11-13 575 if
(likely(!t->ptrace))
9cd80bbb0 Oleg Nesterov 2009-12-17 576
t->parent = t->real_parent;
9cd80bbb0 Oleg Nesterov 2009-12-17 577 if
(t->pdeath_signal)
9cd80bbb0 Oleg Nesterov 2009-12-17 578
group_send_sig_info(t->pdeath_signal,
9cd80bbb0 Oleg Nesterov 2009-12-17 579
SEND_SIG_NOINFO, t);
be946c570 Oleg Nesterov 2014-11-13 580 }
9cd80bbb0 Oleg Nesterov 2009-12-17 581 reparent_leader(father,
p, &dead_children);
^1da177e4 Linus Torvalds 2005-04-16 582 }
---
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