linux-kernel - Re: [PATCH 03/79] s390: switch to new ctime accessors

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Message-ID: <ZJSGVjryWEjbeW1U@li-008a6a4c-3549-11b2-a85c-c5cc2836eea2.ibm.com>
Date:   Thu, 22 Jun 2023 19:35:18 +0200
From:   Alexander Gordeev <agordeev@...ux.ibm.com>
To:     Jeff Layton <jlayton@...nel.org>
Cc:     Christian Brauner <brauner@...nel.org>,
        Heiko Carstens <hca@...ux.ibm.com>,
        Vasily Gorbik <gor@...ux.ibm.com>,
        Christian Borntraeger <borntraeger@...ux.ibm.com>,
        Sven Schnelle <svens@...ux.ibm.com>,
        Al Viro <viro@...iv.linux.org.uk>, Jan Kara <jack@...e.cz>,
        linux-s390@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 03/79] s390: switch to new ctime accessors

On Wed, Jun 21, 2023 at 10:45:16AM -0400, Jeff Layton wrote:

Hi Jeff,
> In later patches, we're going to change how the ctime.tv_nsec field is
> utilized. Switch to using accessor functions instead of raw accesses of
> inode->i_ctime.
> 
> Signed-off-by: Jeff Layton <jlayton@...nel.org>
> ---
>  arch/s390/hypfs/inode.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/arch/s390/hypfs/inode.c b/arch/s390/hypfs/inode.c
> index ee919bfc8186..30fa336ec63e 100644
> --- a/arch/s390/hypfs/inode.c
> +++ b/arch/s390/hypfs/inode.c
> @@ -53,7 +53,7 @@ static void hypfs_update_update(struct super_block *sb)
>  	struct inode *inode = d_inode(sb_info->update_file);
>  
>  	sb_info->last_update = ktime_get_seconds();
> -	inode->i_atime = inode->i_mtime = inode->i_ctime = current_time(inode);
> +	inode->i_atime = inode->i_mtime = inode_ctime_set_current(inode);
>  }
>  
>  /* directory tree removal functions */
> @@ -101,7 +101,7 @@ static struct inode *hypfs_make_inode(struct super_block *sb, umode_t mode)
>  		ret->i_mode = mode;
>  		ret->i_uid = hypfs_info->uid;
>  		ret->i_gid = hypfs_info->gid;
> -		ret->i_atime = ret->i_mtime = ret->i_ctime = current_time(ret);
> +		ret->i_atime = ret->i_mtime = inode_ctime_set_current(ret);
>  		if (S_ISDIR(mode))
>  			set_nlink(ret, 2);
>  	}

I guess, inode_set_ctime() called from inode_ctime_set_current()
updates i_ctime and is part of some other series?

Thanks!