commit b8534d7bd89df0cd41cd47bcd6733a05ea9a691a
author Oleg Nesterov <oleg@tv-sign.ru> Sat Oct 28 10:38:53 2006 -0700
committer Linus Torvalds <torvalds@g5.osdl.org> Sat Oct 28 11:30:54 2006 -0700
tree c4650f417d7f05a9c645d6a0b1f64405ec4c8a39
parent 17b02695b254aa2ef0e53df9c8e6548f86e66a9d

[PATCH] taskstats: kill ->taskstats_lock in favor of ->siglock

signal_struct is (mostly) protected by ->sighand->siglock, I think we don't
need ->taskstats_lock to protect ->stats.  This also allows us to simplify the
locking in fill_tgid().

Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru>
Cc: Shailabh Nagar <nagar@watson.ibm.com>
Cc: Balbir Singh <balbir@in.ibm.com>
Cc: Jay Lan <jlan@sgi.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

kernel/fork.c

diff --git a/kernel/fork.c b/kernel/fork.c
index 2133266..3da978e 100644
--- a/kernel/fork.c
+++ b/kernel/fork.c
@@ -830,7 +830,7 @@
 	if (clone_flags & CLONE_THREAD) {
 		atomic_inc(&current->signal->count);
 		atomic_inc(&current->signal->live);
-		taskstats_tgid_alloc(current->signal);
+		taskstats_tgid_alloc(current);
 		return 0;
 	}
 	sig = kmem_cache_alloc(signal_cachep, GFP_KERNEL);