linux-kernel - Re: [PATCH v2] erofs: deprecate superblock checksum feature

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Message-ID: <548cb723-6bce-4360-75f3-b4ec822bbf2c@linux.alibaba.com>
Date:   Tue, 18 Jul 2023 00:16:46 +0800
From:   Gao Xiang <hsiangkao@...ux.alibaba.com>
To:     Jingbo Xu <jefflexu@...ux.alibaba.com>, chao@...nel.org,
        huyue2@...lpad.com, linux-erofs@...ts.ozlabs.org
Cc:     linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2] erofs: deprecate superblock checksum feature



On 2023/7/17 19:27, Jingbo Xu wrote:
> Later we're going to try the self-contained image verification.
> The current superblock checksum feature has quite limited
> functionality, instead, merkle trees can provide better protection
> for image integrity.
> 
> xxhash is also used in the following xattr name filter feature.  It is
> redundant for one filesystem to rely on two hashing algorithms at the
> same time.
> 
> Since the superblock checksum is a compatible feature, just deprecate
> it now.
> 
> Signed-off-by: Jingbo Xu <jefflexu@...ux.alibaba.com>

I tend to agree on this since it slightly impacts mount time too:

Reviewed-by: Gao Xiang <hsiangkao@...ux.alibaba.com>

Thanks,
Gao Xiang