linux-kernel - Re: [PATCH] f2fs-toos: use getpagesize() to get default blocksize in Android

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Message-ID: <CAHJ8P3+=Ft_LOWHXPDdXQnQA=BsGhDLF0KYWWD6T3KHB-TEgWg@mail.gmail.com>
Date: Thu, 19 Sep 2024 09:23:25 +0800
From: Zhiguo Niu <niuzhiguo84@...il.com>
To: Zhiguo Niu <zhiguo.niu@...soc.com>
Cc: jaegeuk@...nel.org, chao@...nel.org, 
	linux-f2fs-devel@...ts.sourceforge.net, linux-kernel@...r.kernel.org, 
	xiuhong.wang@...soc.com
Subject: Re: [PATCH] f2fs-toos: use getpagesize() to get default blocksize in Android

Hi all,
please ignore this patch,  we can resove this by "-b" parameter .
thanks!
Zhiguo Niu <zhiguo.niu@...soc.com> 于2024年9月14日周六 11:12写道：
>
> When 16K page/block size is enabled in Android platform,
> a error maybe detected in mount process in kernel if "-b"
> parameters is not specified in mkfs.f2fs.
> Just as the following check:
> if (le32_to_cpu(raw_super->log_blocksize) != F2FS_BLKSIZE_BITS)
>
> So use getpagesize() to get correct default blocksize.
>
> Signed-off-by: Zhiguo Niu <zhiguo.niu@...soc.com>
> Signed-off-by: Xiuhong Wang <xiuhong.wang@...soc.com>
> ---
>  lib/libf2fs.c | 9 +++++++++
>  1 file changed, 9 insertions(+)
>
> diff --git a/lib/libf2fs.c b/lib/libf2fs.c
> index ecd22d4..98ee0ae 100644
> --- a/lib/libf2fs.c
> +++ b/lib/libf2fs.c
> @@ -685,8 +685,17 @@ void f2fs_init_configuration(void)
>
>         memset(&c, 0, sizeof(struct f2fs_configuration));
>         c.ndevs = 1;
> +#ifdef WITH_ANDROID
> +       c.blksize = getpagesize();
> +       c.blksize_bits = log_base_2(c.blksize);
> +       if ((1 << c.blksize_bits) != c.blksize) {
> +               c.blksize = 1 << DEFAULT_BLKSIZE_BITS;
> +               c.blksize_bits = DEFAULT_BLKSIZE_BITS;
> +       }
> +#else
>         c.blksize = 1 << DEFAULT_BLKSIZE_BITS;
>         c.blksize_bits = DEFAULT_BLKSIZE_BITS;
> +#endif
>         c.sectors_per_blk = DEFAULT_SECTORS_PER_BLOCK;
>         c.blks_per_seg = DEFAULT_BLOCKS_PER_SEGMENT;
>         c.wanted_total_sectors = -1;
> --
> 1.9.1
>