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| author |   Sean Paul <seanpaul@chromium.org> | 2017-09-21 14:18:46 -0700 |
|---|---|---|
| committer | Sean Paul <seanpaul@chromium.org> | 2017-09-21 14:18:46 -0700 |
| commit | 1ebfc603d046f1dda6507d11803f9b4046cee712 (patch) | |
| tree | 3be6790f2ce819929b1ccff7993c636e0944705a /kernel/task_work.c | |
| parent | qxl: fix primary surface handling (diff) | |
| parent | Merge tag 'kbuild-fixes-v4.14' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild (diff) | |
| download | wireguard-linux-1ebfc603d046f1dda6507d11803f9b4046cee712.tar.xz wireguard-linux-1ebfc603d046f1dda6507d11803f9b4046cee712.zip | |
Merge remote-tracking branch 'origin/master' into drm-misc-fixes
Pick up 4.14-rc1
Signed-off-by: Sean Paul <seanpaul@chromium.org>
Diffstat (limited to 'kernel/task_work.c')
| -rw-r--r-- | kernel/task_work.c | 8 |
1 files changed, 2 insertions, 6 deletions
diff --git a/kernel/task_work.c b/kernel/task_work.c index d513051fcca2..836a72a66fba 100644 --- a/kernel/task_work.c +++ b/kernel/task_work.c @@ -96,20 +96,16 @@ void task_work_run(void) * work->func() can do task_work_add(), do not set * work_exited unless the list is empty. */ + raw_spin_lock_irq(&task->pi_lock); do { work = READ_ONCE(task->task_works); head = !work && (task->flags & PF_EXITING) ? &work_exited : NULL; } while (cmpxchg(&task->task_works, work, head) != work); + raw_spin_unlock_irq(&task->pi_lock); if (!work) break; - /* - * Synchronize with task_work_cancel(). It can't remove - * the first entry == work, cmpxchg(task_works) should - * fail, but it can play with *work and other entries. - */ - raw_spin_unlock_wait(&task->pi_lock); do { next = work->next; |