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| author | Oleg Nesterov <oleg@tv-sign.ru> | 2007-10-16 23:26:59 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-10-17 08:42:51 -0700 |
| commit | 442a10cf9e1c350b4de4dd6f22c72618a0b13d7f (patch) | |
| tree | 13ab9fc1bd97be616511425d422e0c9188fbf5f3 /kernel/exit.c | |
| parent | ebca4cda1133775111e8b09f7124a7e5e391926d (diff) | |
| download | kernel_samsung_smdk4412-442a10cf9e1c350b4de4dd6f22c72618a0b13d7f.zip kernel_samsung_smdk4412-442a10cf9e1c350b4de4dd6f22c72618a0b13d7f.tar.gz kernel_samsung_smdk4412-442a10cf9e1c350b4de4dd6f22c72618a0b13d7f.tar.bz2 | |
wait_task_zombie: don't fight with non-existing race with a dying ptracee
The "p->exit_signal == -1 && p->ptrace == 0" check and the comment are
bogus. We already did exactly the same check in eligible_child(), we did
not drop tasklist_lock since then, and both variables need
write_lock(tasklist) to be changed.
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>
Diffstat (limited to 'kernel/exit.c')
| -rw-r--r-- | kernel/exit.c | 7 |
1 files changed, 0 insertions, 7 deletions
diff --git a/kernel/exit.c b/kernel/exit.c index 28144b9..b27a3dcd 100644 --- a/kernel/exit.c +++ b/kernel/exit.c @@ -1189,13 +1189,6 @@ static int wait_task_zombie(struct task_struct *p, int noreap, BUG_ON(state != EXIT_DEAD); return 0; } - if (unlikely(p->exit_signal == -1 && p->ptrace == 0)) { - /* - * This can only happen in a race with a ptraced thread - * dying on another processor. - */ - return 0; - } /* traced means p->ptrace, but not vice versa */ traced = (p->real_parent != p->parent); |