linux-kernel - Re: [f2fs-dev] [PATCH v3 2/3] f2fs-tools:sload.f2fs compression support

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Message-ID: <785e9f0a-c3d6-9cc5-f17a-a3cc58a43a0f@huawei.com>
Date:   Thu, 10 Dec 2020 16:42:51 +0800
From:   Chao Yu <yuchao0@...wei.com>
To:     Robin Hsu <robinh3123@...il.com>,
        <linux-f2fs-devel@...ts.sourceforge.net>, <jaegeuk@...nel.org>,
        <chao@...nel.org>
CC:     <linux-kernel@...r.kernel.org>
Subject: Re: [f2fs-dev] [PATCH v3 2/3] f2fs-tools:sload.f2fs compression
 support

On 2020/12/8 16:15, Robin Hsu wrote:
> From: Robin Hsu <robinhsu@...gle.com>
> 
> Add F2FS compression support for sload
> * Support file extension filter, either default-accept or default-deny
>    policy
> * Support choice of compression algorithm, LZO (version 2) or LZ4
>    (default)
> * Support custom log of cluster size
> * Support minimum number of compressed blocks per cluster (default 1).
>    A cluster will not be compressed if the number can not be met.
> * suuport -r (read-only) option

Could you please update manual as well?

> +
> +	/* sldc: sload compression support */

Personally, I don't like the naming method of adding "sldc_" prefix... :(

> +	bool sldc_en;
> +	bool sldc_use_allow_list;  /* default false to use the deny list */
> +	struct compress_ctx sldc_cc;
> +	u8 sldc_ca; /* compress algorithm: 0 = LZO, 1 = LZ4 */
> +	compress_ops *sldc_compr;
> +	enum filter_policy sldc_policy;
> +	/* max_cppc can used to specify minimum compression rate */
> +	unsigned int sldc_min_cbpc; /* min compressed pages per cluster */
> +	bool sldc_got_opt;
> +	bool sldc_immutable;
> +	struct ext_tbl_op *sldc_ef; /* extension filter */

The variables name like sldc_en, sldc_ca, min_cbpc, sldc_ef makes developers
hard to understand w/o comments, and also there is no comments for several
variable like sldc_en, sldc_cc...

Could you please improve the naming like f2fs-tools style?

Thanks,