linux-kernel - Re: [f2fs-dev] [PATCH v7 1/2] f2fs: add F2FS_IOC_GET_COMPRESS

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Message-ID: <bdb48c95-f905-3d59-d751-2261547ac746@huawei.com>
Date:   Fri, 30 Oct 2020 14:11:42 +0800
From:   Chao Yu <yuchao0@...wei.com>
To:     Daeho Jeong <daeho43@...il.com>, <linux-kernel@...r.kernel.org>,
        <linux-f2fs-devel@...ts.sourceforge.net>, <kernel-team@...roid.com>
CC:     Daeho Jeong <daehojeong@...gle.com>
Subject: Re: [f2fs-dev] [PATCH v7 1/2] f2fs: add F2FS_IOC_GET_COMPRESS_OPTION
 ioctl

On 2020/10/30 12:10, Daeho Jeong wrote:
> From: Daeho Jeong <daehojeong@...gle.com>
> 
> Added a new F2FS_IOC_GET_COMPRESS_OPTION ioctl to get file compression
> option of a file.
> 
> struct f2fs_comp_option {
>      u8 algorithm;         => compression algorithm
>                            => 0:lzo, 1:lz4, 2:zstd, 3:lzorle
>      u8 log_cluster_size;  => log scale cluster size
>                            => 2 ~ 8
> };
> 
> struct f2fs_comp_option option;
> 
> ioctl(fd, F2FS_IOC_GET_COMPRESS_OPTION, &option);
> 
> Signed-off-by: Daeho Jeong <daehojeong@...gle.com>

Reviewed-by: Chao Yu <yuchao0@...wei.com>

Thanks,