linux-kernel - Re: [PATCH v3] f2fs: use kfree() instead of kvfree() to free superblock data

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Date:   Thu, 18 Jun 2020 11:28:22 +0800
From:   Chao Yu <yuchao0@...wei.com>
To:     Jaegeuk Kim <jaegeuk@...nel.org>,
        Eric Biggers <ebiggers@...nel.org>
CC:     Denis Efremov <efremov@...ux.com>, <linux-kernel@...r.kernel.org>,
        <linux-f2fs-devel@...ts.sourceforge.net>
Subject: Re: [PATCH v3] f2fs: use kfree() instead of kvfree() to free
 superblock data

On 2020/6/16 1:58, Jaegeuk Kim wrote:
> On 06/09, Eric Biggers wrote:
>> On Wed, Jun 10, 2020 at 01:14:46AM +0300, Denis Efremov wrote:
>>> Use kfree() instead of kvfree() to free super in read_raw_super_block()
>>> because the memory is allocated with kzalloc() in the function.
>>> Use kfree() instead of kvfree() to free sbi, raw_super in
>>> f2fs_fill_super() and f2fs_put_super() because the memory is allocated
>>> with kzalloc().
>>>
>>> Fixes: 5222595d093e ("f2fs: use kvmalloc, if kmalloc is failed")
>>> Signed-off-by: Denis Efremov <efremov@...ux.com>

Reviewed-by: Chao Yu <yuchao0@...wei.com>

Thanks,

>>
>> I don't think "Fixes" is appropriate here.
> 
> Agreed. I queued this Cl without it. :)
> Thanks,
> 
>>
>> kvfree() still works on kmalloc'ed memory; it's just not preferred.
>>
>> So this is more a cleanup than a fix.
>>
>> - Eric
> .
>