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rename cancel_rearming_delayed_work() to cancel_delayed_work_sync()

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Imho, the current naming of cancel_xxx workqueue functions is very confusing.

	cancel_delayed_work()
	cancel_rearming_delayed_work()
	cancel_rearming_delayed_workqueue()	// obsolete

	cancel_work_sync()

This looks as if the first 2 functions differ in "type" of their argument
which is not true any longer, nowadays the difference is the behaviour.

The semantics of cancel_rearming_delayed_work(dwork) was changed
significantly, it doesn't require that dwork rearms itself, and cancels dwork
synchronously.

Rename it to cancel_delayed_work_sync().  This matches cancel_delayed_work()
and cancel_work_sync().  Re-create cancel_rearming_delayed_work() as a simple
inline obsolete wrapper, like cancel_rearming_delayed_workqueue().

Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru>
Acked-by: Jarek Poplawski <jarkao2@o2.pl>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Oleg Nesterov 2007-07-15 23:41:44 -07:00 committed by Linus Torvalds
parent 422b14c2e2
commit f5a421a450
2 changed files with 13 additions and 6 deletions
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13
include/linux/workqueue.h
View file

@ -166,14 +166,21 @@ static inline int cancel_delayed_work(struct delayed_work *work)
return ret; return ret;
} }
extern void cancel_rearming_delayed_work(struct delayed_work *work); extern void cancel_delayed_work_sync(struct delayed_work *work);
/* Obsolete. use cancel_rearming_delayed_work() */ /* Obsolete. use cancel_delayed_work_sync() */
static inline static inline
void cancel_rearming_delayed_workqueue(struct workqueue_struct *wq, void cancel_rearming_delayed_workqueue(struct workqueue_struct *wq,
struct delayed_work *work) struct delayed_work *work)
{ {
cancel_rearming_delayed_work(work); cancel_delayed_work_sync(work);
}
/* Obsolete. use cancel_delayed_work_sync() */
static inline
void cancel_rearming_delayed_work(struct delayed_work *work)
{
cancel_delayed_work_sync(work);
} }
#endif #endif

6
kernel/workqueue.c
View file

@ -486,13 +486,13 @@ void cancel_work_sync(struct work_struct *work)
EXPORT_SYMBOL_GPL(cancel_work_sync); EXPORT_SYMBOL_GPL(cancel_work_sync);
/** /**
* cancel_rearming_delayed_work - reliably kill off a delayed work. * cancel_delayed_work_sync - reliably kill off a delayed work.
* @dwork: the delayed work struct * @dwork: the delayed work struct
* *
* It is possible to use this function if @dwork rearms itself via queue_work() * It is possible to use this function if @dwork rearms itself via queue_work()
* or queue_delayed_work(). See also the comment for cancel_work_sync(). * or queue_delayed_work(). See also the comment for cancel_work_sync().
*/ */
void cancel_rearming_delayed_work(struct delayed_work *dwork) void cancel_delayed_work_sync(struct delayed_work *dwork)
{ {
while (!del_timer(&dwork->timer) && while (!del_timer(&dwork->timer) &&
!try_to_grab_pending(&dwork->work)) !try_to_grab_pending(&dwork->work))
@ -500,7 +500,7 @@ void cancel_rearming_delayed_work(struct delayed_work *dwork)
wait_on_work(&dwork->work); wait_on_work(&dwork->work);
work_clear_pending(&dwork->work); work_clear_pending(&dwork->work);
} }
EXPORT_SYMBOL(cancel_rearming_delayed_work); EXPORT_SYMBOL(cancel_delayed_work_sync);
static struct workqueue_struct *keventd_wq __read_mostly; static struct workqueue_struct *keventd_wq __read_mostly;