linux-kernel - [PATCH -next 1/5] mm/kmemleak: make create

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Message-ID: <20200921020007.35803-2-chenjun102@huawei.com>
Date:   Mon, 21 Sep 2020 02:00:03 +0000
From:   Chen Jun <chenjun102@...wei.com>
To:     <linux-kernel@...r.kernel.org>, <linux-mm@...ck.org>
CC:     <catalin.marinas@....com>, <akpm@...ux-foundation.org>,
        <rui.xiang@...wei.com>, <weiyongjun1@...wei.com>
Subject: [PATCH -next 1/5] mm/kmemleak: make create_object return void

From: Wei Yongjun <weiyongjun1@...wei.com>

No user cares about the return value of create_object,
so make it return void.

Signed-off-by: Wei Yongjun <weiyongjun1@...wei.com>
Signed-off-by: Chen Jun <chenjun102@...wei.com>
---
 mm/kmemleak.c | 8 +++-----
 1 file changed, 3 insertions(+), 5 deletions(-)

diff --git a/mm/kmemleak.c b/mm/kmemleak.c
index c0014d3b91c1..b3f603fd9fc3 100644
--- a/mm/kmemleak.c
+++ b/mm/kmemleak.c
@@ -567,8 +567,8 @@ static int __save_stack_trace(unsigned long *trace)
  * Create the metadata (struct kmemleak_object) corresponding to an allocated
  * memory block and add it to the object_list and object_tree_root.
  */
-static struct kmemleak_object *create_object(unsigned long ptr, size_t size,
-					     int min_count, gfp_t gfp)
+static void create_object(unsigned long ptr, size_t size, int min_count,
+			  gfp_t gfp)
 {
 	unsigned long flags;
 	struct kmemleak_object *object, *parent;
@@ -579,7 +579,7 @@ static struct kmemleak_object *create_object(unsigned long ptr, size_t size,
 	if (!object) {
 		pr_warn("Cannot allocate a kmemleak_object structure\n");
 		kmemleak_disable();
-		return NULL;
+		return;
 	}
 
 	INIT_LIST_HEAD(&object->object_list);
@@ -640,7 +640,6 @@ static struct kmemleak_object *create_object(unsigned long ptr, size_t size,
 			 */
 			dump_object_info(parent);
 			kmem_cache_free(object_cache, object);
-			object = NULL;
 			goto out;
 		}
 	}
@@ -650,7 +649,6 @@ static struct kmemleak_object *create_object(unsigned long ptr, size_t size,
 	list_add_tail_rcu(&object->object_list, &object_list);
 out:
 	raw_spin_unlock_irqrestore(&kmemleak_lock, flags);
-	return object;
 }
 
 /*
-- 
2.25.0