linux-kernel - Re: [PATCH -next,V2] cachefiles: support to disable assert macro

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Message-ID: <b98dc776-99cd-4514-80e6-bdd4dbeb0e50@huawei.com>
Date: Fri, 26 Jan 2024 10:49:43 +0800
From: Zizhi Wo <wozizhi@...wei.com>
To: <dhowells@...hat.com>
CC: <linux-cachefs@...hat.com>, <linux-kernel@...r.kernel.org>,
	<yangerkun@...wei.com>, <hsiangkao@...ux.alibaba.com>
Subject: Re: [PATCH -next,V2] cachefiles: support to disable assert macro

friendly ping

在 2023/11/30 10:49, Zizhi Wo 写道:
> friendly ping
> 
> 在 2023/11/7 18:17, Zizhi Wo 写道:
>> friendly ping
>>
>> 在 2023/11/2 0:34, WoZ1zh1 写道:
>>> In fs/cachefiles/internal.h, ASSERT macro is enabled by default and can
>>> not be disabled, then assert failure will crash the kernel as the BUG()
>>> is included in the ASSERT macro. Therefore, add CACHEFILES_ASSERT to
>>> control it.
>>>
>>> Signed-off-by: WoZ1zh1 <wozizhi@...wei.com>
>>> ---
>>>   fs/cachefiles/Kconfig    | 11 +++++++++++
>>>   fs/cachefiles/internal.h |  2 +-
>>>   2 files changed, 12 insertions(+), 1 deletion(-)
>>>
>>> diff --git a/fs/cachefiles/Kconfig b/fs/cachefiles/Kconfig
>>> index 8df715640a48..83d8ec3ba2d8 100644
>>> --- a/fs/cachefiles/Kconfig
>>> +++ b/fs/cachefiles/Kconfig
>>> @@ -38,3 +38,14 @@ config CACHEFILES_ONDEMAND
>>>         and is delegated to userspace.
>>>         If unsure, say N.
>>> +
>>> +config CACHEFILES_ASSERT
>>> +    bool "CACHEFILES asserts"
>>> +    default n
>>> +    depends on CACHEFILES
>>> +    help
>>> +      Support the ASSERT mode for failure behavior.
>>> +      Say N here to disable the ASSERT by default.
>>> +      Say Y to add assertion checks in some places. But the assertion
>>> +      failure will result in fatal errors that BUG() the kernel.
>>> +
>>> diff --git a/fs/cachefiles/internal.h b/fs/cachefiles/internal.h
>>> index 2ad58c465208..263b1f13e943 100644
>>> --- a/fs/cachefiles/internal.h
>>> +++ b/fs/cachefiles/internal.h
>>> @@ -425,7 +425,7 @@ do {                            \
>>>   #define _debug(FMT, ...) no_printk(FMT, ##__VA_ARGS__)
>>>   #endif
>>> -#if 1 /* defined(__KDEBUGALL) */
>>> +#ifdef CONFIG_CACHEFILES_ASSERT
>>>   #define ASSERT(X)                            \
>>>   do {                                    \