[patch 08/54] make freezeable workqueues singlethread

[Chris Wright]

-stable review patch.  If anyone has any objections, please let us know.
---------------------

From: Oleg Nesterov <oleg@xxxxxxxxxx>

It is a known fact that freezeable multithreaded workqueues doesn't like
CPU_DEAD. We keep them only for the incoming CPU-hotplug rework.

Sadly, we can't just kill create_freezeable_workqueue() right now, make
them singlethread.

Signed-off-by: Oleg Nesterov <oleg@xxxxxxxxxx>
Cc: "Rafael J. Wysocki" <rjw@xxxxxxx>
Cc: Gautham R Shenoy <ego@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
Signed-off-by: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>
Signed-off-by: Chris Wright <chrisw@xxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxx>
---
 include/linux/workqueue.h |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- linux-2.6.21.4.orig/include/linux/workqueue.h
+++ linux-2.6.21.4/include/linux/workqueue.h
@@ -162,7 +162,7 @@ extern struct workqueue_struct *__create
 						    int singlethread,
 						    int freezeable);
 #define create_workqueue(name) __create_workqueue((name), 0, 0)
-#define create_freezeable_workqueue(name) __create_workqueue((name), 0, 1)
+#define create_freezeable_workqueue(name) __create_workqueue((name), 1, 1)
 #define create_singlethread_workqueue(name) __create_workqueue((name), 1, 0)
 
 extern void destroy_workqueue(struct workqueue_struct *wq);

-- 
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