linux-kernel - Re: [PATCH v2] erofs: DEFLATE compression support

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Message-ID: <a2900d12-d90a-b5d3-b158-c079911fdf03@infradead.org>
Date:   Wed, 12 Jul 2023 17:01:29 -0700
From:   Randy Dunlap <rdunlap@...radead.org>
To:     Gao Xiang <hsiangkao@...ux.alibaba.com>,
        linux-erofs@...ts.ozlabs.org
Cc:     LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v2] erofs: DEFLATE compression support



On 7/12/23 16:46, Gao Xiang wrote:
> diff --git a/fs/erofs/Kconfig b/fs/erofs/Kconfig
> index f259d92c9720..d7b5327215f0 100644
> --- a/fs/erofs/Kconfig
> +++ b/fs/erofs/Kconfig
> @@ -99,6 +99,21 @@ config EROFS_FS_ZIP_LZMA
>  
>  	  If unsure, say N.
>  
> +config EROFS_FS_ZIP_DEFLATE
> +	bool "EROFS DEFLATE compressed data support"
> +	depends on EROFS_FS_ZIP
> +	select ZLIB_INFLATE
> +	help
> +	  Saying Y here includes support for reading EROFS file systems
> +	  containing DEFLATE compressed data.  It gives better compression
> +	  ratios than the default LZ4 format, whileas it costs more CPU

not a word:                                   whileas

> +	  overhead.
> +
> +	  DEFLATE support is an experimental feature for now and so most
> +	  file systems will be readable without selecting this option.
> +
> +	  If unsure, say N.

-- 
~Randy