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Message-ID: <39cc1370-a80b-427d-86e7-6903ed1ce868@kernel.org>
Date: Wed, 8 May 2024 21:12:06 +0800
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Subject: Re: [PATCH] erofs: Zstandard compression support
To: Gao Xiang <hsiangkao@linux.alibaba.com>, linux-erofs@lists.ozlabs.org
Cc: LKML <linux-kernel@vger.kernel.org>
References: <20240508090346.2992116-1-hsiangkao@linux.alibaba.com>
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From: Chao Yu <chao@kernel.org>
In-Reply-To: <20240508090346.2992116-1-hsiangkao@linux.alibaba.com>
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On 2024/5/8 17:03, Gao Xiang wrote:
> Add Zstandard compression as the 4th supported algorithm since it
> becomes more popular now and some end users have asked this for
> quite a while [1][2].
> 
> Each EROFS physical cluster contains only one valid standard
> Zstandard frame as described in [3] so that decompression can be
> performed on a per-pcluster basis independently.
> 
> Currently, it just leverages multi-call stream decompression APIs with
> internal sliding window buffers.  One-shot or bufferless decompression
> could be implemented later for even better performance if needed.
> 
> [1] https://github.com/erofs/erofs-utils/issues/6
> [2] https://lore.kernel.org/r/Y08h+z6CZdnS1XBm@B-P7TQMD6M-0146.lan
> [3] https://www.rfc-editor.org/rfc/rfc8478.txt
> Signed-off-by: Gao Xiang <hsiangkao@linux.alibaba.com>

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

Thanks,