tree 5b3fd79640ad7940e0abbed193a192d3919f259d
parent c34056a3fdde777c079cc8a70785c2602f2586cb
author Tejun Heo <tj@kernel.org> 1277798832 +0200
committer Tejun Heo <tj@kernel.org> 1277798832 +0200

workqueue: reimplement work flushing using linked works

A work is linked to the next one by having WORK_STRUCT_LINKED bit set
and these links can be chained.  When a linked work is dispatched to a
worker, all linked works are dispatched to the worker's newly added
->scheduled queue and processed back-to-back.

Currently, as there's only single worker per cwq, having linked works
doesn't make any visible behavior difference.  This change is to
prepare for multiple shared workers per cpu.

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