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Message-ID: <20230706145204.5n5c4oruohfqwwic@quack3>
Date:   Thu, 6 Jul 2023 16:52:04 +0200
From:   Jan Kara <jack@...e.cz>
To:     Jeff Layton <jlayton@...nel.org>
Cc:     Christian Brauner <brauner@...nel.org>,
        "Darrick J. Wong" <djwong@...nel.org>,
        Al Viro <viro@...iv.linux.org.uk>, Jan Kara <jack@...e.cz>,
        linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-xfs@...r.kernel.org
Subject: Re: [PATCH v2 82/92] xfs: convert to ctime accessor functions

On Wed 05-07-23 15:01:47, Jeff Layton wrote:
> In later patches, we're going to change how the inode's ctime field is
> used. Switch to using accessor functions instead of raw accesses of
> inode->i_ctime.
> 
> Signed-off-by: Jeff Layton <jlayton@...nel.org>

Looks good. Feel free to add:

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

								Honza

> ---
>  fs/xfs/libxfs/xfs_inode_buf.c   | 5 +++--
>  fs/xfs/libxfs/xfs_trans_inode.c | 2 +-
>  fs/xfs/xfs_acl.c                | 2 +-
>  fs/xfs/xfs_bmap_util.c          | 6 ++++--
>  fs/xfs/xfs_inode.c              | 3 +--
>  fs/xfs/xfs_inode_item.c         | 2 +-
>  fs/xfs/xfs_iops.c               | 4 ++--
>  fs/xfs/xfs_itable.c             | 4 ++--
>  8 files changed, 15 insertions(+), 13 deletions(-)
> 
> diff --git a/fs/xfs/libxfs/xfs_inode_buf.c b/fs/xfs/libxfs/xfs_inode_buf.c
> index 758aacd8166b..a35781577cad 100644
> --- a/fs/xfs/libxfs/xfs_inode_buf.c
> +++ b/fs/xfs/libxfs/xfs_inode_buf.c
> @@ -222,7 +222,8 @@ xfs_inode_from_disk(
>  	 */
>  	inode->i_atime = xfs_inode_from_disk_ts(from, from->di_atime);
>  	inode->i_mtime = xfs_inode_from_disk_ts(from, from->di_mtime);
> -	inode->i_ctime = xfs_inode_from_disk_ts(from, from->di_ctime);
> +	inode_set_ctime_to_ts(inode,
> +			      xfs_inode_from_disk_ts(from, from->di_ctime));
>  
>  	ip->i_disk_size = be64_to_cpu(from->di_size);
>  	ip->i_nblocks = be64_to_cpu(from->di_nblocks);
> @@ -316,7 +317,7 @@ xfs_inode_to_disk(
>  
>  	to->di_atime = xfs_inode_to_disk_ts(ip, inode->i_atime);
>  	to->di_mtime = xfs_inode_to_disk_ts(ip, inode->i_mtime);
> -	to->di_ctime = xfs_inode_to_disk_ts(ip, inode->i_ctime);
> +	to->di_ctime = xfs_inode_to_disk_ts(ip, inode_get_ctime(inode));
>  	to->di_nlink = cpu_to_be32(inode->i_nlink);
>  	to->di_gen = cpu_to_be32(inode->i_generation);
>  	to->di_mode = cpu_to_be16(inode->i_mode);
> diff --git a/fs/xfs/libxfs/xfs_trans_inode.c b/fs/xfs/libxfs/xfs_trans_inode.c
> index cb4796b6e693..6b2296ff248a 100644
> --- a/fs/xfs/libxfs/xfs_trans_inode.c
> +++ b/fs/xfs/libxfs/xfs_trans_inode.c
> @@ -67,7 +67,7 @@ xfs_trans_ichgtime(
>  	if (flags & XFS_ICHGTIME_MOD)
>  		inode->i_mtime = tv;
>  	if (flags & XFS_ICHGTIME_CHG)
> -		inode->i_ctime = tv;
> +		inode_set_ctime_to_ts(inode, tv);
>  	if (flags & XFS_ICHGTIME_CREATE)
>  		ip->i_crtime = tv;
>  }
> diff --git a/fs/xfs/xfs_acl.c b/fs/xfs/xfs_acl.c
> index 791db7d9c849..6b840301817a 100644
> --- a/fs/xfs/xfs_acl.c
> +++ b/fs/xfs/xfs_acl.c
> @@ -233,7 +233,7 @@ xfs_acl_set_mode(
>  	xfs_ilock(ip, XFS_ILOCK_EXCL);
>  	xfs_trans_ijoin(tp, ip, XFS_ILOCK_EXCL);
>  	inode->i_mode = mode;
> -	inode->i_ctime = current_time(inode);
> +	inode_set_ctime_current(inode);
>  	xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE);
>  
>  	if (xfs_has_wsync(mp))
> diff --git a/fs/xfs/xfs_bmap_util.c b/fs/xfs/xfs_bmap_util.c
> index fbb675563208..fcefab687285 100644
> --- a/fs/xfs/xfs_bmap_util.c
> +++ b/fs/xfs/xfs_bmap_util.c
> @@ -1644,6 +1644,7 @@ xfs_swap_extents(
>  	uint64_t		f;
>  	int			resblks = 0;
>  	unsigned int		flags = 0;
> +	struct timespec64	ctime;
>  
>  	/*
>  	 * Lock the inodes against other IO, page faults and truncate to
> @@ -1756,8 +1757,9 @@ xfs_swap_extents(
>  	 * process that the file was not changed out from
>  	 * under it.
>  	 */
> -	if ((sbp->bs_ctime.tv_sec != VFS_I(ip)->i_ctime.tv_sec) ||
> -	    (sbp->bs_ctime.tv_nsec != VFS_I(ip)->i_ctime.tv_nsec) ||
> +	ctime = inode_get_ctime(VFS_I(ip));
> +	if ((sbp->bs_ctime.tv_sec != ctime.tv_sec) ||
> +	    (sbp->bs_ctime.tv_nsec != ctime.tv_nsec) ||
>  	    (sbp->bs_mtime.tv_sec != VFS_I(ip)->i_mtime.tv_sec) ||
>  	    (sbp->bs_mtime.tv_nsec != VFS_I(ip)->i_mtime.tv_nsec)) {
>  		error = -EBUSY;
> diff --git a/fs/xfs/xfs_inode.c b/fs/xfs/xfs_inode.c
> index 9e62cc500140..360fe83a334f 100644
> --- a/fs/xfs/xfs_inode.c
> +++ b/fs/xfs/xfs_inode.c
> @@ -843,10 +843,9 @@ xfs_init_new_inode(
>  	ip->i_df.if_nextents = 0;
>  	ASSERT(ip->i_nblocks == 0);
>  
> -	tv = current_time(inode);
> +	tv = inode_set_ctime_current(inode);
>  	inode->i_mtime = tv;
>  	inode->i_atime = tv;
> -	inode->i_ctime = tv;
>  
>  	ip->i_extsize = 0;
>  	ip->i_diflags = 0;
> diff --git a/fs/xfs/xfs_inode_item.c b/fs/xfs/xfs_inode_item.c
> index 91c847a84e10..127b2410eb20 100644
> --- a/fs/xfs/xfs_inode_item.c
> +++ b/fs/xfs/xfs_inode_item.c
> @@ -528,7 +528,7 @@ xfs_inode_to_log_dinode(
>  	memset(to->di_pad3, 0, sizeof(to->di_pad3));
>  	to->di_atime = xfs_inode_to_log_dinode_ts(ip, inode->i_atime);
>  	to->di_mtime = xfs_inode_to_log_dinode_ts(ip, inode->i_mtime);
> -	to->di_ctime = xfs_inode_to_log_dinode_ts(ip, inode->i_ctime);
> +	to->di_ctime = xfs_inode_to_log_dinode_ts(ip, inode_get_ctime(inode));
>  	to->di_nlink = inode->i_nlink;
>  	to->di_gen = inode->i_generation;
>  	to->di_mode = inode->i_mode;
> diff --git a/fs/xfs/xfs_iops.c b/fs/xfs/xfs_iops.c
> index 24718adb3c16..3a9363953ef2 100644
> --- a/fs/xfs/xfs_iops.c
> +++ b/fs/xfs/xfs_iops.c
> @@ -574,7 +574,7 @@ xfs_vn_getattr(
>  	stat->ino = ip->i_ino;
>  	stat->atime = inode->i_atime;
>  	stat->mtime = inode->i_mtime;
> -	stat->ctime = inode->i_ctime;
> +	stat->ctime = inode_get_ctime(inode);
>  	stat->blocks = XFS_FSB_TO_BB(mp, ip->i_nblocks + ip->i_delayed_blks);
>  
>  	if (xfs_has_v3inodes(mp)) {
> @@ -1055,7 +1055,7 @@ xfs_vn_update_time(
>  
>  	xfs_ilock(ip, XFS_ILOCK_EXCL);
>  	if (flags & S_CTIME)
> -		inode->i_ctime = *now;
> +		inode_set_ctime_to_ts(inode, *now);
>  	if (flags & S_MTIME)
>  		inode->i_mtime = *now;
>  	if (flags & S_ATIME)
> diff --git a/fs/xfs/xfs_itable.c b/fs/xfs/xfs_itable.c
> index f225413a993c..c2093cb56092 100644
> --- a/fs/xfs/xfs_itable.c
> +++ b/fs/xfs/xfs_itable.c
> @@ -100,8 +100,8 @@ xfs_bulkstat_one_int(
>  	buf->bs_atime_nsec = inode->i_atime.tv_nsec;
>  	buf->bs_mtime = inode->i_mtime.tv_sec;
>  	buf->bs_mtime_nsec = inode->i_mtime.tv_nsec;
> -	buf->bs_ctime = inode->i_ctime.tv_sec;
> -	buf->bs_ctime_nsec = inode->i_ctime.tv_nsec;
> +	buf->bs_ctime = inode_get_ctime(inode).tv_sec;
> +	buf->bs_ctime_nsec = inode_get_ctime(inode).tv_nsec;
>  	buf->bs_gen = inode->i_generation;
>  	buf->bs_mode = inode->i_mode;
>  
> -- 
> 2.41.0
> 
-- 
Jan Kara <jack@...e.com>
SUSE Labs, CR

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