linux-kernel - RE: [f2fs-dev] [PATCH 2/2] f2fs: do checkpoint when umount flag is not set

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Message-id: <000501d036f8$f5e99660$e1bcc320$@samsung.com>
Date:	Fri, 23 Jan 2015 18:39:25 +0800
From:	Chao Yu <chao2.yu@...sung.com>
To:	'Jaegeuk Kim' <jaegeuk@...nel.org>, linux-kernel@...r.kernel.org,
	linux-fsdevel@...r.kernel.org,
	linux-f2fs-devel@...ts.sourceforge.net
Subject: RE: [f2fs-dev] [PATCH 2/2] f2fs: do checkpoint when umount flag is not
	set

> -----Original Message-----
> From: Jaegeuk Kim [mailto:jaegeuk@...nel.org]
> Sent: Friday, January 23, 2015 8:09 AM
> To: linux-kernel@...r.kernel.org; linux-fsdevel@...r.kernel.org;
> linux-f2fs-devel@...ts.sourceforge.net
> Cc: Jaegeuk Kim
> Subject: [f2fs-dev] [PATCH 2/2] f2fs: do checkpoint when umount flag is not set
> 
> If the previous checkpoint was done without CP_UMOUNT flag, it needs to do
> checkpoint with CP_UMOUNT for the next fast boot.
> 
> Signed-off-by: Jaegeuk Kim <jaegeuk@...nel.org>

Reviewed-by: Chao Yu <chao2.yu@...sung.com>

> ---
>  fs/f2fs/checkpoint.c | 3 ++-
>  fs/f2fs/super.c      | 3 ++-
>  2 files changed, 4 insertions(+), 2 deletions(-)
> 
> diff --git a/fs/f2fs/checkpoint.c b/fs/f2fs/checkpoint.c
> index 9f5317c..231d8c9 100644
> --- a/fs/f2fs/checkpoint.c
> +++ b/fs/f2fs/checkpoint.c
> @@ -1043,7 +1043,8 @@ void write_checkpoint(struct f2fs_sb_info *sbi, struct cp_control *cpc)
> 
>  	mutex_lock(&sbi->cp_mutex);
> 
> -	if (!sbi->s_dirty && cpc->reason != CP_DISCARD)
> +	if (!sbi->s_dirty &&
> +			cpc->reason != CP_DISCARD && cpc->reason != CP_UMOUNT)
>  		goto out;
>  	if (unlikely(f2fs_cp_error(sbi)))
>  		goto out;
> diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c
> index 84f95cd..6ef1458 100644
> --- a/fs/f2fs/super.c
> +++ b/fs/f2fs/super.c
> @@ -448,7 +448,8 @@ static void f2fs_put_super(struct super_block *sb)
>  	stop_gc_thread(sbi);
> 
>  	/* We don't need to do checkpoint when it's clean */

Better to update the annotation above.

Thanks,
Yu

> -	if (sbi->s_dirty) {
> +	if (sbi->s_dirty ||
> +			!is_set_ckpt_flags(F2FS_CKPT(sbi), CP_UMOUNT_FLAG)) {
>  		struct cp_control cpc = {
>  			.reason = CP_UMOUNT,
>  		};
> --
> 2.1.1
> 

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