From 858a195b9330d0bd36f59e8652f693a1beb7da2f Mon Sep 17 00:00:00 2001 From: Liu Shixin Date: Wed, 18 Oct 2023 18:29:51 +0800 Subject: mm: kmemleak: add __find_and_remove_object() Add new __find_and_remove_object() without kmemleak_lock protect, it is in preparation for the next patch. Link: https://lkml.kernel.org/r/20231018102952.3339837-7-liushixin2@huawei.com Signed-off-by: Liu Shixin Acked-by: Catalin Marinas Cc: Kefeng Wang Cc: Patrick Wang Signed-off-by: Andrew Morton --- mm/kmemleak.c | 17 ++++++++++++++--- 1 file changed, 14 insertions(+), 3 deletions(-) (limited to 'mm') diff --git a/mm/kmemleak.c b/mm/kmemleak.c index 82322b029f1c..f63c220eb49e 100644 --- a/mm/kmemleak.c +++ b/mm/kmemleak.c @@ -583,6 +583,19 @@ static void __remove_object(struct kmemleak_object *object) object->del_state |= DELSTATE_REMOVED; } +static struct kmemleak_object *__find_and_remove_object(unsigned long ptr, + int alias, + bool is_phys) +{ + struct kmemleak_object *object; + + object = __lookup_object(ptr, alias, is_phys); + if (object) + __remove_object(object); + + return object; +} + /* * Look up an object in the object search tree and remove it from both * object_tree_root (or object_phys_tree_root) and object_list. The @@ -596,9 +609,7 @@ static struct kmemleak_object *find_and_remove_object(unsigned long ptr, int ali struct kmemleak_object *object; raw_spin_lock_irqsave(&kmemleak_lock, flags); - object = __lookup_object(ptr, alias, is_phys); - if (object) - __remove_object(object); + object = __find_and_remove_object(ptr, alias, is_phys); raw_spin_unlock_irqrestore(&kmemleak_lock, flags); return object; -- cgit v1.2.3