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mm: kmemleak: add __find_and_remove_object()

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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 <liushixin2@huawei.com>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Cc: Kefeng Wang <wangkefeng.wang@huawei.com>
Cc: Patrick Wang <patrick.wang.shcn@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Liu Shixin 2023-10-18 18:29:51 +08:00 committed by Andrew Morton
parent 2e1d47385f
commit 858a195b93
1 changed files with 14 additions and 3 deletions
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17
mm/kmemleak.c
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@ -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;