Hello, kthread_worker was introduced together with concurrency managed workqueue to serve workqueue users which need a special dedicated worker - e.g. RT scheduling. This is minimal queue / flush / flush all iterface on top of kthread and each provided interface matches the workqueue counterpart so that switching isn't difficult. However, one noticeable difference was that kthread_worker doesn't allow a work item to be freed while being executed. The intention was to keep the code simpler but it didn't really and the restriction is subtle and does prevent some valid use cases. This two-patch series reimplements flush_kthread_work() so that it uses an extra work item for flushing. While this takes a bit more lines, this is easier to understand and removes the annoying difference. This patchset contains the following two patches. 0001-kthread_worker-reorganize-to-prepare-for-flush_kthre.patch 0002-kthread_worker-reimplement-flush_kthread_work-to-all.patch The first one is a prep patch which makes no functional changes. The second reimplements flush_kthread_work(). All current kthread_worker users are cc'd. If no one objects, I'll push it through the workqueue branch. This patchset is also available in the following git branch. git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq.git review-kthread_worker-flush diffstat follows. Thanks. include/linux/kthread.h | 8 +--- kernel/kthread.c | 86 +++++++++++++++++++++++++++--------------------- 2 files changed, 52 insertions(+), 42 deletions(-) -- tejun -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
