linux-kernel - [PATCH v3 2/2] fault-inject: use DEFINE_DEBUGFS

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Message-ID: <1572486977-14195-3-git-send-email-zhongjiang@huawei.com>
Date:   Thu, 31 Oct 2019 09:56:17 +0800
From:   zhong jiang <zhongjiang@...wei.com>
To:     <akinobu.mita@...il.com>, <gregkh@...uxfoundation.org>
CC:     <linux-kernel@...r.kernel.org>, <zhongjiang@...wei.com>
Subject: [PATCH v3 2/2] fault-inject: use DEFINE_DEBUGFS_ATTRIBUTE to define debugfs fops

It is more clearly to use DEFINE_DEBUGFS_ATTRIBUTE to define debugfs file
operation rather than DEFINE_SIMPLE_ATTRIBUTE.

Meanwhile, debugfs_create_file() in debugfs_create_stacktrace_depth() can
be replaced by debugfs_create_file_unsafe().

Suggested-by: Akinobu Mita <akinobu.mita@...il.com>
Signed-off-by: zhong jiang <zhongjiang@...wei.com>
---
 lib/fault-inject.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/lib/fault-inject.c b/lib/fault-inject.c
index 430b3ac..2655bfd 100644
--- a/lib/fault-inject.c
+++ b/lib/fault-inject.c
@@ -167,14 +167,14 @@ static int debugfs_ul_get(void *data, u64 *val)
 	return 0;
 }
 
-DEFINE_SIMPLE_ATTRIBUTE(fops_stacktrace_depth, debugfs_ul_get,
-			debugfs_stacktrace_depth_set, "%llu\n");
+DEFINE_DEBUGFS_ATTRIBUTE(fops_stacktrace_depth, debugfs_ul_get,
+			 debugfs_stacktrace_depth_set, "%llu\n");
 
 static void debugfs_create_stacktrace_depth(const char *name, umode_t mode,
 					    struct dentry *parent,
 					    unsigned long *value)
 {
-	debugfs_create_file(name, mode, parent, value, &fops_stacktrace_depth);
+	debugfs_create_file_unsafe(name, mode, parent, value, &fops_stacktrace_depth);
 }
 
 #endif /* CONFIG_FAULT_INJECTION_STACKTRACE_FILTER */
-- 
1.7.12.4