linux-kernel - Re: [PATCH v4 5/5] erofs: add on-disk compressed tail-packing inline support

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Date:   Thu, 30 Dec 2021 12:01:36 +0800
From:   Chao Yu <chao@...nel.org>
To:     Gao Xiang <hsiangkao@...ux.alibaba.com>,
        linux-erofs@...ts.ozlabs.org
Cc:     Yue Hu <huyue2@...ong.com>, LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v4 5/5] erofs: add on-disk compressed tail-packing inline
 support

On 2021/12/28 13:46, Gao Xiang wrote:
> From: Yue Hu <huyue2@...ong.com>
> 
> Introduces erofs compressed tail-packing inline support.
> 
> This approach adds a new field called `h_idata_size' in the
> per-file compression header to indicate the encoded size of
> each tail-packing pcluster.
> 
> At runtime, it will find the start logical offset of the tail
> pcluster when initializing per-inode zmap and record such
> extent (headlcn, idataoff) information to the in-memory inode.
> Therefore, follow-on requests can directly recognize if one
> pcluster is a tail-packing inline pcluster or not.
> 
> Signed-off-by: Yue Hu <huyue2@...ong.com>
> Signed-off-by: Gao Xiang <hsiangkao@...ux.alibaba.com>

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

Thanks,