workqueue: implicit ordered attribute should be overridable
authorTejun Heo <tj@kernel.org>
Sun, 23 Jul 2017 12:36:15 +0000 (08:36 -0400)
committerTejun Heo <tj@kernel.org>
Tue, 25 Jul 2017 17:28:56 +0000 (13:28 -0400)
commit0a94efb5acbb6980d7c9ab604372d93cd507e4d8
treef3ac747f0130dd53b5a704e56f1ccede24d90f31
parent5c0338c68706be53b3dc472e4308961c36e4ece1
workqueue: implicit ordered attribute should be overridable

5c0338c68706 ("workqueue: restore WQ_UNBOUND/max_active==1 to be
ordered") automatically enabled ordered attribute for unbound
workqueues w/ max_active == 1.  Because ordered workqueues reject
max_active and some attribute changes, this implicit ordered mode
broke cases where the user creates an unbound workqueue w/ max_active
== 1 and later explicitly changes the related attributes.

This patch distinguishes explicit and implicit ordered setting and
overrides from attribute changes if implict.

Signed-off-by: Tejun Heo <tj@kernel.org>
Fixes: 5c0338c68706 ("workqueue: restore WQ_UNBOUND/max_active==1 to be ordered")
include/linux/workqueue.h
kernel/workqueue.c