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Date:   Tue, 8 Aug 2023 11:32:26 +0200
From:   Jan Kara <jack@suse.cz>
To:     Jeff Layton <jlayton@kernel.org>
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Subject: Re: [PATCH v7 05/13] fat: make fat_update_time get its own timestamp
Message-ID: <20230808093226.bq2qfxv5npckk643@quack3>
References: <20230807-mgctime-v7-0-d1dec143a704@kernel.org>
 <20230807-mgctime-v7-5-d1dec143a704@kernel.org>
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In-Reply-To: <20230807-mgctime-v7-5-d1dec143a704@kernel.org>
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On Mon 07-08-23 15:38:36, Jeff Layton wrote:
> In later patches, we're going to drop the "now" parameter from the
> update_time operation. Fix fat_update_time to fetch its own timestamp.
> It turns out that this is easily done by just passing a NULL timestamp
> pointer to fat_update_time.
             ^^^ fat_truncate_time()

> Also, it may be that things have changed by the time we get to calling
> fat_update_time after checking inode_needs_update_time. Ensure that we
> attempt the i_version bump if any of the S_* flags besides S_ATIME are
> set.
> 
> Signed-off-by: Jeff Layton <jlayton@kernel.org>

Looks good. Feel free to add:

Reviewed-by: Jan Kara <jack@suse.cz>

								Honza

> ---
>  fs/fat/misc.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/fs/fat/misc.c b/fs/fat/misc.c
> index 67006ea08db6..8cab87145d63 100644
> --- a/fs/fat/misc.c
> +++ b/fs/fat/misc.c
> @@ -347,14 +347,14 @@ int fat_update_time(struct inode *inode, struct timespec64 *now, int flags)
>  		return 0;
>  
>  	if (flags & (S_ATIME | S_CTIME | S_MTIME)) {
> -		fat_truncate_time(inode, now, flags);
> +		fat_truncate_time(inode, NULL, flags);
>  		if (inode->i_sb->s_flags & SB_LAZYTIME)
>  			dirty_flags |= I_DIRTY_TIME;
>  		else
>  			dirty_flags |= I_DIRTY_SYNC;
>  	}
>  
> -	if ((flags & S_VERSION) && inode_maybe_inc_iversion(inode, false))
> +	if ((flags & (S_VERSION|S_CTIME|S_MTIME)) && inode_maybe_inc_iversion(inode, false))
>  		dirty_flags |= I_DIRTY_SYNC;
>  
>  	__mark_inode_dirty(inode, dirty_flags);
> 
> -- 
> 2.41.0
> 
-- 
Jan Kara <jack@suse.com>
SUSE Labs, CR