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

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Message-ID: <20200609222546.GA24766@sol.localdomain>
Date:   Tue, 9 Jun 2020 15:25:46 -0700
From:   Eric Biggers <ebiggers@...nel.org>
To:     Denis Efremov <efremov@...ux.com>
Cc:     Chao Yu <yuchao0@...wei.com>, Jaegeuk Kim <jaegeuk@...nel.org>,
        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 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>

I don't think "Fixes" is appropriate here.

kvfree() still works on kmalloc'ed memory; it's just not preferred.

So this is more a cleanup than a fix.

- Eric