[PATCH v2] sched/core: add __sched tag for io_schedule()

[Gao Xiang <gaoxiang25@huawei.com>]

non-inline io_schedule() was introduced in
commit 10ab56434f2f ("sched/core: Separate out io_schedule_prepare() and io_schedule_finish()")
Keep in line with io_schedule_timeout, Otherwise
"/proc/<pid>/wchan" will report io_schedule()
rather than its callers when waiting io.

Reported-by: Jilong Kou <koujilong@huawei.com>
Cc: Tejun Heo <tj@kernel.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Acked-by: Tejun Heo <tj@kernel.org>
Fixes: 10ab56434f2f ("sched/core: Separate out io_schedule_prepare() and io_schedule_finish()")
Cc: <stable@vger.kernel.org> # 4.11+
Signed-off-by: Gao Xiang <gaoxiang25@huawei.com>
---
change log v2:
 - add missing tags

 kernel/sched/core.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kernel/sched/core.c b/kernel/sched/core.c
index 874c427742a9..4d5962232a55 100644
--- a/kernel/sched/core.c
+++ b/kernel/sched/core.c
@@ -5123,7 +5123,7 @@ long __sched io_schedule_timeout(long timeout)
 }
 EXPORT_SYMBOL(io_schedule_timeout);
 
-void io_schedule(void)
+void __sched io_schedule(void)
 {
 	int token;
 
-- 
2.17.1