tree 76975b37ae0ef1ebf460aaab68359ed7a12fe37a
parent 7a22ad757ec75186ad43a5b4670fa7423ee8f480
author Tejun Heo <tj@kernel.org> 1277798833 +0200
committer Tejun Heo <tj@kernel.org> 1277798833 +0200

workqueue: implement WQ_NON_REENTRANT

With gcwq managing all the workers and work->data pointing to the last
gcwq it was on, non-reentrance can be easily implemented by checking
whether the work is still running on the previous gcwq on queueing.
Implement it.

Signed-off-by: Tejun Heo <tj@kernel.org>