The patch titled
workqueues: lockdep annotations for flush_work()
has been removed from the -mm tree. Its filename was
workqueues-lockdep-annotations-for-flush_work.patch
This patch was dropped because it was merged into mainline or a subsystem tree
The current -mm tree may be found at http://userweb.kernel.org/~akpm/mmotm/
------------------------------------------------------
Subject: workqueues: lockdep annotations for flush_work()
From: Oleg Nesterov <oleg@xxxxxxxxxx>
Add lockdep annotations to flush_work() and update the comment.
Signed-off-by: Oleg Nesterov <oleg@xxxxxxxxxx>
Cc: Jarek Poplawski <jarkao2@xxxxx>
Acked-by: Johannes Berg <johannes@xxxxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
kernel/workqueue.c | 5 +++++
1 file changed, 5 insertions(+)
diff -puN kernel/workqueue.c~workqueues-lockdep-annotations-for-flush_work kernel/workqueue.c
--- a/kernel/workqueue.c~workqueues-lockdep-annotations-for-flush_work
+++ a/kernel/workqueue.c
@@ -427,6 +427,8 @@ EXPORT_SYMBOL_GPL(flush_workqueue);
* flush_work - block until a work_struct's callback has terminated
* @work: the work which is to be flushed
*
+ * Returns false if @work has already terminated.
+ *
* It is expected that, prior to calling flush_work(), the caller has
* arranged for the work to not be requeued, otherwise it doesn't make
* sense to use this function.
@@ -442,6 +444,9 @@ int flush_work(struct work_struct *work)
if (!cwq)
return 0;
+ lock_acquire(&cwq->wq->lockdep_map, 0, 0, 0, 2, _THIS_IP_);
+ lock_release(&cwq->wq->lockdep_map, 1, _THIS_IP_);
+
prev = NULL;
spin_lock_irq(&cwq->lock);
if (!list_empty(&work->entry)) {
_
Patches currently in -mm which might be from oleg@xxxxxxxxxx are
origin.patch
linux-next.patch
migrate_timers-add-comment-use-spinlock_irq.patch
tracehook-add-linux-tracehookh.patch
tracehook-exec.patch
tracehook-unexport-ptrace_notify.patch
tracehook-exit.patch
tracehook-clone.patch
tracehook-vfork-done.patch
tracehook-release_task.patch
tracehook-tracehook_tracer_task.patch
tracehook-tracehook_expect_breakpoints.patch
tracehook-tracehook_signal_handler.patch
tracehook-tracehook_consider_ignored_signal.patch
tracehook-tracehook_consider_fatal_signal.patch
tracehook-syscall.patch
tracehook-get_signal_to_deliver.patch
tracehook-job-control.patch
tracehook-death.patch
tracehook-force-signal_pending.patch
tracehook-tif_notify_resume.patch
tracehook-asm-syscallh.patch
tracehook-config_have_arch_tracehook.patch
tracehook-wait_task_inactive.patch
task_current_syscall.patch
proc-pid-syscall.patch
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