commit 158e1645e07f3e9f7e4962d7a0997f5c3b98311b
author Al Viro <viro@zeniv.linux.org.uk> Wed Jun 27 09:24:13 2012 +0400
committer Al Viro <viro@zeniv.linux.org.uk> Sun Jul 22 23:57:55 2012 +0400
tree 09d695b3a0410afe15f7fd6006bc6c1effee151d
parent 41f9d29f09ca0b22c3631e8a39676e74cda9bcc0

trim task_work: get rid of hlist

layout based on Oleg's suggestion; single-linked list,
task->task_works points to the last element, forward pointer
from said last element points to head.  I'd still prefer
much more regular scheme with two pointers in task_work,
but...

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

include/linux/tracehook.h

diff --git a/include/linux/tracehook.h b/include/linux/tracehook.h
index 6a4d82b..1e98b55 100644
--- a/include/linux/tracehook.h
+++ b/include/linux/tracehook.h
@@ -192,7 +192,7 @@
 	 * hlist_add_head(task->task_works);
 	 */
 	smp_mb__after_clear_bit();
-	if (unlikely(!hlist_empty(&current->task_works)))
+	if (unlikely(current->task_works))
 		task_work_run();
 }