linux-kernel - [PATCH 1/6] cgroup: make cftype->private a unsigned long

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Date:	Thu, 25 Jun 2015 17:38:52 -0400
From:	Tejun Heo <tj@...nel.org>
To:	axboe@...nel.dk
Cc:	linux-kernel@...r.kernel.org, cgroups@...r.kernel.org,
	vgoyal@...hat.com, avanzini.arianna@...il.com, kernel-team@...com,
	Tejun Heo <tj@...nel.org>,
	Johannes Weiner <hannes@...xchg.org>,
	Li Zefan <lizefan@...wei.com>
Subject: [PATCH 1/6] cgroup: make cftype->private a unsigned long

It's pretty unusual to have an int as a private data field and it
makes it impossible to carray a pointer value through it.  Let's make
it an unsigned long.  AFAICS, this shouldn't break anything.

Signed-off-by: Tejun Heo <tj@...nel.org>
Cc: Johannes Weiner <hannes@...xchg.org>
Cc: Li Zefan <lizefan@...wei.com>
---
 include/linux/cgroup.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/linux/cgroup.h b/include/linux/cgroup.h
index e7da0aa..5571f9f 100644
--- a/include/linux/cgroup.h
+++ b/include/linux/cgroup.h
@@ -417,7 +417,7 @@ struct cftype {
 	 * end of cftype array.
 	 */
 	char name[MAX_CFTYPE_NAME];
-	int private;
+	unsigned long private;
 	/*
 	 * If not 0, file mode is set to this value, otherwise it will
 	 * be figured out automatically
-- 
2.4.3

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