Merge tag 'v3.6-rc1' into staging/for_v3.6

Linux 3.6-rc1

* tag 'v3.6-rc1': (18733 commits)
  Linux 3.6-rc1
  mm: remove node_start_pfn checking in new WARN_ON for now
  ARM: mmp: add missing irqs.h
  arm: mvebu: fix typo in .dtsi comment for Armada XP SoCs
  ARM: PRIMA2: delete redundant codes to restore LATCHED when timer resumes
  libceph: fix crypto key null deref, memory leak
  ceph: simplify+fix atomic_open
  sh: explicitly include sh_dma.h in setup-sh7722.c
  um: Add arch/x86/um to MAINTAINERS
  um: pass siginfo to guest process
  um: fix ubd_file_size for read-only files
  md/dm-raid: DM_RAID should select MD_RAID10
  md/raid1: submit IO from originating thread instead of md thread.
  raid5: raid5d handle stripe in batch way
  raid5: make_request use batch stripe release
  um: pull interrupt_end() into userspace()
  um: split syscall_trace(), pass pt_regs to it
  um: switch UPT_SET_RETURN_VALUE and regs_return_value to pt_regs
  MIPS: Loongson 2: Sort out clock managment.
  locks: remove unused lm_release_private
  ...

1 files changed, 25 insertions, 0 deletions

diff --git a/include/linux/task_work.h b/include/linux/task_work.h
new file mode 100644
index 000000000000..fb46b03b1852
--- /dev/null
+++ b/include/linux/task_work.h
@@ -0,0 +1,25 @@
+#ifndef _LINUX_TASK_WORK_H
+#define _LINUX_TASK_WORK_H
+
+#include <linux/list.h>
+#include <linux/sched.h>
+
+typedef void (*task_work_func_t)(struct callback_head *);
+
+static inline void
+init_task_work(struct callback_head *twork, task_work_func_t func)
+{
+	twork->func = func;
+}
+
+int task_work_add(struct task_struct *task, struct callback_head *twork, bool);
+struct callback_head *task_work_cancel(struct task_struct *, task_work_func_t);
+void task_work_run(void);
+
+static inline void exit_task_work(struct task_struct *task)
+{
+	if (unlikely(task->task_works))
+		task_work_run();
+}
+
+#endif	/* _LINUX_TASK_WORK_H */