linux-kernel - [PATCH] debugfs: set no_llseek in DEFINE_DEBUGFS

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Message-Id: <69f0f4a1d271947fae2a2574bae60c704b74b3ca.1489033126.git.geliangtang@gmail.com>
Date:   Sat, 11 Mar 2017 08:44:57 +0800
From:   Geliang Tang <geliangtang@...il.com>
To:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:     Geliang Tang <geliangtang@...il.com>, linux-kernel@...r.kernel.org
Subject: [PATCH] debugfs: set no_llseek in DEFINE_DEBUGFS_ATTRIBUTE

In DEFINE_DEBUGFS_ATTRIBUTE() macro, since we use nonseekable_open() to
open, we should use no_llseek() to seek, not generic_file_llseek().

Signed-off-by: Geliang Tang <geliangtang@...il.com>
---
 include/linux/debugfs.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/linux/debugfs.h b/include/linux/debugfs.h
index 7dff776..9174b0d 100644
--- a/include/linux/debugfs.h
+++ b/include/linux/debugfs.h
@@ -74,7 +74,7 @@ static const struct file_operations __fops = {				\
 	.release = simple_attr_release,					\
 	.read	 = debugfs_attr_read,					\
 	.write	 = debugfs_attr_write,					\
-	.llseek  = generic_file_llseek,					\
+	.llseek  = no_llseek,						\
 }
 
 #if defined(CONFIG_DEBUG_FS)
-- 
2.9.3