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authorOleg Nesterov <oleg@redhat.com>2013-11-13 15:36:12 +0100
committerIngo Molnar <mingo@kernel.org>2013-11-27 13:50:50 +0100
commitbb8cbbfee68518796df4050868e5b0f5ad078f9f (patch)
tree6f7813e8577bef51b31b32b362ef4cc7136a45c2 /kernel/fork.c
parent39e24d8ffbb6aa90222527dbd5991ec49fbbf323 (diff)
downloadlinux-bb8cbbfee68518796df4050868e5b0f5ad078f9f.tar.bz2
tasks/fork: Remove unnecessary 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@redhat.com> Cc: David Laight <David.Laight@ACULAB.COM> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Tejun Heo <tj@kernel.org> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20131113143612.GA10540@redhat.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'kernel/fork.c')
-rw-r--r--kernel/fork.c4
1 files changed, 1 insertions, 3 deletions
diff --git a/kernel/fork.c b/kernel/fork.c
index 728d5be9548c..b3080823a24d 100644
--- a/kernel/fork.c
+++ b/kernel/fork.c
@@ -1402,13 +1402,11 @@ static struct task_struct *copy_process(unsigned long clone_flags,
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;