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trim task_work: get rid of hlist

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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>
This commit is contained in:
Al Viro 2012-06-27 09:24:13 +04:00
parent 41f9d29f09
commit 158e1645e0
5 changed files with 38 additions and 36 deletions
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2
include/linux/tracehook.h
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@ -192,7 +192,7 @@ static inline void tracehook_notify_resume(struct pt_regs *regs)
* 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();
}