linux-kernel - Fwd: [RFC] make kthread_worker

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Message-ID: <CAFP4FLoYPgexB98gTjiod9WO8P2r-Kz8wNw12sJfUKO1u8r+Pw@mail.gmail.com>
Date:	Mon, 1 Jun 2015 18:05:58 +0800
From:	yalin wang <yalin.wang2010@...il.com>
To:	Andrew Morton <akpm@...ux-foundation.org>, laijs@...fujitsu.com,
	tj@...nel.org, nacc@...ux.vnet.ibm.com,
	penguin-kernel@...ove.sakura.ne.jp,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Fwd: [RFC] make kthread_worker_fn to be freezable

I notice that kthread_worker_fn() call try_to_freeze() function,
but it don't make itself to be a freezable kthread,
kthread default behavior is not freezable, we should change it if
want try_to_freeze() work correctly.

Signed-off-by: yalin wang <yalin.wang2010@...il.com>
---
 kernel/kthread.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/kernel/kthread.c b/kernel/kthread.c
index 10e489c..b20a21d 100644
--- a/kernel/kthread.c
+++ b/kernel/kthread.c
@@ -550,6 +550,7 @@ int kthread_worker_fn(void *worker_ptr)

        WARN_ON(worker->task);
        worker->task = current;
+       set_freezable();
 repeat:
        set_current_state(TASK_INTERRUPTIBLE);  /* mb paired w/ kthread_stop */

--
1.9.1
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