linux-kernel - Re: [PATCH v2] f2fs: merge lz4hc_compress_pages() to lz4_compress

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Date:   Wed, 5 Apr 2023 10:42:02 +0800
From:   Chao Yu <chao@...nel.org>
To:     Yangtao Li <frank.li@...o.com>, Jaegeuk Kim <jaegeuk@...nel.org>
Cc:     linux-f2fs-devel@...ts.sourceforge.net,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2] f2fs: merge lz4hc_compress_pages() to
 lz4_compress_pages()

On 2023/3/31 0:49, Yangtao Li wrote:
> +#ifdef CONFIG_F2FS_FS_LZ4HC
> +	unsigned char level = F2FS_I(cc->inode)->i_compress_level;
>   
>   	if (level)
>   		len = LZ4_compress_HC(cc->rbuf, cc->cbuf->cdata, cc->rlen,
>   					cc->clen, level, cc->private);
>   	else

[snip]

>   #endif

[snip]

> +		len = LZ4_compress_default(cc->rbuf, cc->cbuf->cdata, cc->rlen,

It's weired that whole else xxx; statement is split by #endif.

What about?

	unsigned char level = 0;

#if
...
#endif
	if (!level)
		len = LZ4_compress_default()

Thanks,

>   						cc->clen, cc->private);
>   	if (!len)
>   		return -EAGAIN;