linux-kernel - Re: [PATCH v7 07/13] xfs: have xfs_vn_update

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Message-ID: <20230809155756.GV11352@frogsfrogsfrogs>
Date:   Wed, 9 Aug 2023 08:57:56 -0700
From:   "Darrick J. Wong" <djwong@...nel.org>
To:     Jeff Layton <jlayton@...nel.org>
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Subject: Re: [PATCH v7 07/13] xfs: have xfs_vn_update_time gets its own
 timestamp

On Mon, Aug 07, 2023 at 03:38:38PM -0400, Jeff Layton wrote:
> In later patches we're going to drop the "now" parameter from the
> update_time operation. Prepare XFS for this by reworking how it fetches
> timestamps and sets them in the inode. Ensure that we update the ctime
> even if only S_MTIME is set.
> 
> Signed-off-by: Jeff Layton <jlayton@...nel.org>
> ---
>  fs/xfs/xfs_iops.c | 12 ++++++++----
>  1 file changed, 8 insertions(+), 4 deletions(-)
> 
> diff --git a/fs/xfs/xfs_iops.c b/fs/xfs/xfs_iops.c
> index 731f45391baa..72d18e7840f5 100644
> --- a/fs/xfs/xfs_iops.c
> +++ b/fs/xfs/xfs_iops.c
> @@ -1037,6 +1037,7 @@ xfs_vn_update_time(
>  	int			log_flags = XFS_ILOG_TIMESTAMP;
>  	struct xfs_trans	*tp;
>  	int			error;
> +	struct timespec64	now = current_time(inode);
>  
>  	trace_xfs_update_time(ip);
>  
> @@ -1056,12 +1057,15 @@ xfs_vn_update_time(
>  		return error;
>  
>  	xfs_ilock(ip, XFS_ILOCK_EXCL);
> -	if (flags & S_CTIME)
> -		inode_set_ctime_to_ts(inode, *now);
> +	if (flags & (S_CTIME|S_MTIME))

Minor nit: spaces around    ^ the operator.

Otherwise looks ok to me...
Acked-by: Darrick J. Wong <djwong@...nel.org>

--D

> +		now = inode_set_ctime_current(inode);
> +	else
> +		now = current_time(inode);
> +
>  	if (flags & S_MTIME)
> -		inode->i_mtime = *now;
> +		inode->i_mtime = now;
>  	if (flags & S_ATIME)
> -		inode->i_atime = *now;
> +		inode->i_atime = now;
>  
>  	xfs_trans_ijoin(tp, ip, XFS_ILOCK_EXCL);
>  	xfs_trans_log_inode(tp, ip, log_flags);
> 
> -- 
> 2.41.0
>