linux-kernel - Re: [f2fs-dev] [PATCH] f2fs: allow dirty sections with zero valid block for checkpoint disabled

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Message-ID: <Zj0TuhzHzevgxGfe@google.com>
Date: Thu, 9 May 2024 18:19:38 +0000
From: Jaegeuk Kim <jaegeuk@...nel.org>
To: Daeho Jeong <daeho43@...il.com>
Cc: linux-kernel@...r.kernel.org, linux-f2fs-devel@...ts.sourceforge.net,
	kernel-team@...roid.com, Daeho Jeong <daehojeong@...gle.com>
Subject: Re: [f2fs-dev] [PATCH] f2fs: allow dirty sections with zero valid
 block for checkpoint disabled

On 05/07, Daeho Jeong wrote:
> From: Daeho Jeong <daehojeong@...gle.com>
> 
> Following the semantic for dirty segments in checkpoint disabled mode,
> apply the same rule to dirty sections.
> 
> Signed-off-by: Daeho Jeong <daehojeong@...gle.com>
> ---
>  fs/f2fs/segment.c | 7 +++++--
>  1 file changed, 5 insertions(+), 2 deletions(-)
> 
> diff --git a/fs/f2fs/segment.c b/fs/f2fs/segment.c
> index 6474b7338e81..2463398b243f 100644
> --- a/fs/f2fs/segment.c
> +++ b/fs/f2fs/segment.c
> @@ -771,8 +771,11 @@ static void __locate_dirty_segment(struct f2fs_sb_info *sbi, unsigned int segno,
>  			block_t valid_blocks =
>  				get_valid_blocks(sbi, segno, true);
>  
> -			f2fs_bug_on(sbi, unlikely(!valid_blocks ||
> -					valid_blocks == CAP_BLKS_PER_SEC(sbi)));
> +			if (!is_sbi_flag_set(sbi, SBI_CP_DISABLED))
> +				f2fs_bug_on(sbi, unlikely(!valid_blocks));
> +
> +			f2fs_bug_on(sbi, unlikely(valid_blocks ==
> +					CAP_BLKS_PER_SEC(sbi)));

What about:
f2fs_bug_on(sbi,
	(!is_sbi_flag_set(sbi, SBI_CP_DISABLED) && !valid_blocks) ||
	valid_blocks == CAP_BLKS_PER_SEC(sbi));

>  
>  			if (!IS_CURSEC(sbi, secno))
>  				set_bit(secno, dirty_i->dirty_secmap);
> -- 
> 2.45.0.rc1.225.g2a3ae87e7f-goog
> 
> 
> 
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