linux-kernel - Re: [PATCH 3/3] f2fs: fix to cover meta flush with cp

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Date:   Wed, 27 May 2020 14:02:33 -0700
From:   Jaegeuk Kim <jaegeuk@...nel.org>
To:     Chao Yu <yuchao0@...wei.com>
Cc:     linux-f2fs-devel@...ts.sourceforge.net,
        linux-kernel@...r.kernel.org, chao@...nel.org
Subject: Re: [PATCH 3/3] f2fs: fix to cover meta flush with cp_lock

On 05/27, Chao Yu wrote:
> meta inode page should be flushed under cp_lock, fix it.

It doesn't matter for this case, yes?

> 
> Signed-off-by: Chao Yu <yuchao0@...wei.com>
> ---
>  fs/f2fs/file.c | 2 ++
>  1 file changed, 2 insertions(+)
> 
> diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c
> index f7de2a1da528..0fcae4d90074 100644
> --- a/fs/f2fs/file.c
> +++ b/fs/f2fs/file.c
> @@ -2260,7 +2260,9 @@ static int f2fs_ioc_shutdown(struct file *filp, unsigned long arg)
>  		set_sbi_flag(sbi, SBI_IS_SHUTDOWN);
>  		break;
>  	case F2FS_GOING_DOWN_METAFLUSH:
> +		mutex_lock(&sbi->cp_mutex);
>  		f2fs_sync_meta_pages(sbi, META, LONG_MAX, FS_META_IO);
> +		mutex_unlock(&sbi->cp_mutex);
>  		f2fs_stop_checkpoint(sbi, false);
>  		set_sbi_flag(sbi, SBI_IS_SHUTDOWN);
>  		break;
> -- 
> 2.18.0.rc1