Subject: [merged] fork-no-need-to-initialize-child-exit_state.patch removed from -mm tree
To: oleg@xxxxxxxxxx,David.Laight@xxxxxxxxxx,geert@xxxxxxxxxxxxxx,mingo@xxxxxxxxxx,peterz@xxxxxxxxxxxxx,tj@xxxxxxxxxx,mm-commits@xxxxxxxxxxxxxxx
From: akpm@xxxxxxxxxxxxxxxxxxxx
Date: Mon, 02 Dec 2013 12:37:31 -0800
The patch titled
Subject: fork: no need to initialize child->exit_state
has been removed from the -mm tree. Its filename was
fork-no-need-to-initialize-child-exit_state.patch
This patch was dropped because it was merged into mainline or a subsystem tree
------------------------------------------------------
From: Oleg Nesterov <oleg@xxxxxxxxxx>
Subject: fork: no need to initialize child->exit_state
A zombie task obviously can't fork(), remove the unnecessary
initialization of child->exit_state. It is zero anyway after
dup_task_struct().
Note: copy_process() is huge and it has a lot of chaotic initializations,
probably it makes sense to move them into the new helper called by
dup_task_struct().
Signed-off-by: Oleg Nesterov <oleg@xxxxxxxxxx>
Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Cc: David Laight <David.Laight@xxxxxxxxxx>
Cc: Geert Uytterhoeven <geert@xxxxxxxxxxxxxx>
Cc: Ingo Molnar <mingo@xxxxxxxxxx>
Cc: Tejun Heo <tj@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
kernel/fork.c | 4 +---
1 file changed, 1 insertion(+), 3 deletions(-)
diff -puN kernel/fork.c~fork-no-need-to-initialize-child-exit_state kernel/fork.c
--- a/kernel/fork.c~fork-no-need-to-initialize-child-exit_state
+++ a/kernel/fork.c
@@ -1402,13 +1402,11 @@ static struct task_struct *copy_process(
p->tgid = p->pid;
}
- p->pdeath_signal = 0;
- p->exit_state = 0;
-
p->nr_dirtied = 0;
p->nr_dirtied_pause = 128 >> (PAGE_SHIFT - 10);
p->dirty_paused_when = 0;
+ p->pdeath_signal = 0;
INIT_LIST_HEAD(&p->thread_group);
p->task_works = NULL;
_
Patches currently in -mm which might be from oleg@xxxxxxxxxx are
autofs4-allow-autofs-to-work-outside-the-initial-pid-namespace.patch
autofs4-translate-pids-to-the-right-namespace-for-the-daemon.patch
coredump-set_dumpable-fix-the-theoretical-race-with-itself.patch
coredump-kill-mmf_dumpable-and-mmf_dump_securely.patch
coredump-make-__get_dumpable-get_dumpable-inline-kill-fs-coredumph.patch
proc-cleanup-simplify-get_task_state-task_state_array.patch
proc-fix-the-potential-use-after-free-in-first_tid.patch
proc-change-first_tid-to-use-while_each_thread-rather-than-next_thread.patch
proc-dont-abuse-group_leader-in-proc_task_readdir-paths.patch
proc-fix-f_pos-overflows-in-first_tid.patch
exec-check_unsafe_exec-use-while_each_thread-rather-than-next_thread.patch
exec-check_unsafe_exec-kill-the-dead-eagain-and-clear_in_exec-logic.patch
exec-move-the-final-allow_write_access-fput-into-free_bprm.patch
exec-kill-task_struct-did_exec.patch
fs-proc-arrayc-change-do_task_stat-to-use-while_each_thread.patch
kernel-sysc-k_getrusage-can-use-while_each_thread.patch
kernel-signalc-change-do_signal_stop-do_sigaction-to-use-while_each_thread.patch
linux-next.patch
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