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Subject: Re: [f2fs-dev] [PATCH v4] f2fs: change fiemap way in printing
 compression chunk
To:     Daeho Jeong <daeho43@gmail.com>
Cc:     linux-kernel@vger.kernel.org,
        linux-f2fs-devel@lists.sourceforge.net, kernel-team@android.com,
        Daeho Jeong <daehojeong@google.com>,
        Eric Biggers <ebiggers@google.com>
References: <20210726041819.2059593-1-daeho43@gmail.com>
 <f9555521-8878-2d46-36f1-3032bb8bbc0a@kernel.org>
 <CACOAw_zvFcV-5ePrFOr-bo2DxXyFzjDTSo-7aPcXG6jtNweEbA@mail.gmail.com>
From:   Chao Yu <chao@kernel.org>
Message-ID: <66d9419d-5ce6-626c-7ac8-d0592f34ec31@kernel.org>
Date:   Thu, 29 Jul 2021 08:37:26 +0800
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On 2021/7/28 0:41, Daeho Jeong wrote:
> How about adding this?
> 
> skip_fill:
> 
>          if (map.m_pblk == COMPRESS_ADDR) {
> 
>                  if (start_blk & (cluster_size - 1)) {
> 
>                          ret = -EFSCORRUPTED;
> 
>                          goto out;
> 
>                  }
> 
>                  compr_cluster = true;
> 
>                  count_in_cluster = 1;
> 
>          } else if (compr_appended) {

It seems we can add a separate patch to cover all cases that cluster metadata is
going to be accessed rather than just fixing fiemap() case here?

>>> Signed-off-by: Daeho Jeong <daehojeong@google.com>
>>> Tested-by: Eric Biggers <ebiggers@google.com>

Anyway, this patch looks good to me.

Reviewed-by: Chao Yu <chao@kernel.org>

Thanks,