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author | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2014-01-23 08:10:44 -0800 |
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committer | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2014-01-23 08:10:44 -0800 |
commit | 55df811f2066fcaec2548248f0a1a6a0c12dc6b8 (patch) | |
tree | 0850f490489e5b941692f3fe36dff5d2c1c35c3c /kernel/workqueue.c | |
parent | 8e2f2325b73f3e5e46ecffd291556f33b8e3f8c9 (diff) | |
parent | 497ab1f290a26fa9414c5c316515f1e2ddba0803 (diff) |
Merge branch 'next' into for-linus
First round of input updates for 3.14.
Diffstat (limited to 'kernel/workqueue.c')
-rw-r--r-- | kernel/workqueue.c | 32 |
1 files changed, 10 insertions, 22 deletions
diff --git a/kernel/workqueue.c b/kernel/workqueue.c index c66912be990f..b010eac595d2 100644 --- a/kernel/workqueue.c +++ b/kernel/workqueue.c @@ -2851,19 +2851,6 @@ already_gone: return false; } -static bool __flush_work(struct work_struct *work) -{ - struct wq_barrier barr; - - if (start_flush_work(work, &barr)) { - wait_for_completion(&barr.done); - destroy_work_on_stack(&barr.work); - return true; - } else { - return false; - } -} - /** * flush_work - wait for a work to finish executing the last queueing instance * @work: the work to flush @@ -2877,10 +2864,18 @@ static bool __flush_work(struct work_struct *work) */ bool flush_work(struct work_struct *work) { + struct wq_barrier barr; + lock_map_acquire(&work->lockdep_map); lock_map_release(&work->lockdep_map); - return __flush_work(work); + if (start_flush_work(work, &barr)) { + wait_for_completion(&barr.done); + destroy_work_on_stack(&barr.work); + return true; + } else { + return false; + } } EXPORT_SYMBOL_GPL(flush_work); @@ -4832,14 +4827,7 @@ long work_on_cpu(int cpu, long (*fn)(void *), void *arg) INIT_WORK_ONSTACK(&wfc.work, work_for_cpu_fn); schedule_work_on(cpu, &wfc.work); - - /* - * The work item is on-stack and can't lead to deadlock through - * flushing. Use __flush_work() to avoid spurious lockdep warnings - * when work_on_cpu()s are nested. - */ - __flush_work(&wfc.work); - + flush_work(&wfc.work); return wfc.ret; } EXPORT_SYMBOL_GPL(work_on_cpu); |