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authorOleg Nesterov <oleg@tv-sign.ru>2007-07-15 23:41:44 -0700
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-07-16 09:05:51 -0700
commit1f1f642e2f092e37eb9038060eb0100c44f55a11 (patch)
tree73dea7896dea85dcf5cfa13b9e3ebf9645868160 /include/linux/workqueue.h
parentf5a421a4509a7e2dff11da0f01b0548f4f84d503 (diff)
make cancel_xxx_work_sync() return a boolean
Change cancel_work_sync() and cancel_delayed_work_sync() to return a boolean indicating whether the work was actually cancelled. A zero return value means that the work was not pending/queued. Without that kind of change it is not possible to avoid flush_workqueue() sometimes, see the next patch as an example. Also, this patch unifies both functions and kills the (unlikely) busy-wait loop. 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>
Diffstat (limited to 'include/linux/workqueue.h')
-rw-r--r--include/linux/workqueue.h4
1 files changed, 2 insertions, 2 deletions
diff --git a/include/linux/workqueue.h b/include/linux/workqueue.h
index 5c89ac6e7f55..ce6badc98f6d 100644
--- a/include/linux/workqueue.h
+++ b/include/linux/workqueue.h
@@ -148,7 +148,7 @@ extern int keventd_up(void);
extern void init_workqueues(void);
int execute_in_process_context(work_func_t fn, struct execute_work *);
-extern void cancel_work_sync(struct work_struct *work);
+extern int cancel_work_sync(struct work_struct *work);
/*
* Kill off a pending schedule_delayed_work(). Note that the work callback
@@ -166,7 +166,7 @@ static inline int cancel_delayed_work(struct delayed_work *work)
return ret;
}
-extern void cancel_delayed_work_sync(struct delayed_work *work);
+extern int cancel_delayed_work_sync(struct delayed_work *work);
/* Obsolete. use cancel_delayed_work_sync() */
static inline