linux-kernel - Re: [PATCH v2 28/92] bfs: convert to ctime accessor functions

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Message-ID: <20230706104446.gyx4d7msxoi5v377@quack3>
Date:   Thu, 6 Jul 2023 12:44:46 +0200
From:   Jan Kara <jack@...e.cz>
To:     Jeff Layton <jlayton@...nel.org>
Cc:     Christian Brauner <brauner@...nel.org>,
        "Tigran A. Aivazian" <aivazian.tigran@...il.com>,
        Al Viro <viro@...iv.linux.org.uk>, Jan Kara <jack@...e.cz>,
        linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 28/92] bfs: convert to ctime accessor functions

On Wed 05-07-23 15:00:53, 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/bfs/dir.c   | 16 ++++++++--------
>  fs/bfs/inode.c |  5 ++---
>  2 files changed, 10 insertions(+), 11 deletions(-)
> 
> diff --git a/fs/bfs/dir.c b/fs/bfs/dir.c
> index d2e8a2a56b05..12b8af04dcb3 100644
> --- a/fs/bfs/dir.c
> +++ b/fs/bfs/dir.c
> @@ -97,7 +97,7 @@ static int bfs_create(struct mnt_idmap *idmap, struct inode *dir,
>  	set_bit(ino, info->si_imap);
>  	info->si_freei--;
>  	inode_init_owner(&nop_mnt_idmap, inode, dir, mode);
> -	inode->i_mtime = inode->i_atime = inode->i_ctime = current_time(inode);
> +	inode->i_mtime = inode->i_atime = inode_set_ctime_current(inode);
>  	inode->i_blocks = 0;
>  	inode->i_op = &bfs_file_inops;
>  	inode->i_fop = &bfs_file_operations;
> @@ -158,7 +158,7 @@ static int bfs_link(struct dentry *old, struct inode *dir,
>  		return err;
>  	}
>  	inc_nlink(inode);
> -	inode->i_ctime = current_time(inode);
> +	inode_set_ctime_current(inode);
>  	mark_inode_dirty(inode);
>  	ihold(inode);
>  	d_instantiate(new, inode);
> @@ -187,9 +187,9 @@ static int bfs_unlink(struct inode *dir, struct dentry *dentry)
>  	}
>  	de->ino = 0;
>  	mark_buffer_dirty_inode(bh, dir);
> -	dir->i_ctime = dir->i_mtime = current_time(dir);
> +	dir->i_mtime = inode_set_ctime_current(dir);
>  	mark_inode_dirty(dir);
> -	inode->i_ctime = dir->i_ctime;
> +	inode_set_ctime_to_ts(inode, inode_get_ctime(dir));
>  	inode_dec_link_count(inode);
>  	error = 0;
>  
> @@ -240,10 +240,10 @@ static int bfs_rename(struct mnt_idmap *idmap, struct inode *old_dir,
>  			goto end_rename;
>  	}
>  	old_de->ino = 0;
> -	old_dir->i_ctime = old_dir->i_mtime = current_time(old_dir);
> +	old_dir->i_mtime = inode_set_ctime_current(old_dir);
>  	mark_inode_dirty(old_dir);
>  	if (new_inode) {
> -		new_inode->i_ctime = current_time(new_inode);
> +		inode_set_ctime_current(new_inode);
>  		inode_dec_link_count(new_inode);
>  	}
>  	mark_buffer_dirty_inode(old_bh, old_dir);
> @@ -292,9 +292,9 @@ static int bfs_add_entry(struct inode *dir, const struct qstr *child, int ino)
>  				pos = (block - sblock) * BFS_BSIZE + off;
>  				if (pos >= dir->i_size) {
>  					dir->i_size += BFS_DIRENT_SIZE;
> -					dir->i_ctime = current_time(dir);
> +					inode_set_ctime_current(dir);
>  				}
> -				dir->i_mtime = dir->i_ctime = current_time(dir);
> +				dir->i_mtime = inode_set_ctime_current(dir);
>  				mark_inode_dirty(dir);
>  				de->ino = cpu_to_le16((u16)ino);
>  				for (i = 0; i < BFS_NAMELEN; i++)
> diff --git a/fs/bfs/inode.c b/fs/bfs/inode.c
> index 1926bec2c850..e6a76ae9eb44 100644
> --- a/fs/bfs/inode.c
> +++ b/fs/bfs/inode.c
> @@ -82,10 +82,9 @@ struct inode *bfs_iget(struct super_block *sb, unsigned long ino)
>  	inode->i_blocks = BFS_FILEBLOCKS(di);
>  	inode->i_atime.tv_sec =  le32_to_cpu(di->i_atime);
>  	inode->i_mtime.tv_sec =  le32_to_cpu(di->i_mtime);
> -	inode->i_ctime.tv_sec =  le32_to_cpu(di->i_ctime);
> +	inode_set_ctime(inode, le32_to_cpu(di->i_ctime), 0);
>  	inode->i_atime.tv_nsec = 0;
>  	inode->i_mtime.tv_nsec = 0;
> -	inode->i_ctime.tv_nsec = 0;
>  
>  	brelse(bh);
>  	unlock_new_inode(inode);
> @@ -143,7 +142,7 @@ static int bfs_write_inode(struct inode *inode, struct writeback_control *wbc)
>  	di->i_nlink = cpu_to_le32(inode->i_nlink);
>  	di->i_atime = cpu_to_le32(inode->i_atime.tv_sec);
>  	di->i_mtime = cpu_to_le32(inode->i_mtime.tv_sec);
> -	di->i_ctime = cpu_to_le32(inode->i_ctime.tv_sec);
> +	di->i_ctime = cpu_to_le32(inode_get_ctime(inode).tv_sec);
>  	i_sblock = BFS_I(inode)->i_sblock;
>  	di->i_sblock = cpu_to_le32(i_sblock);
>  	di->i_eblock = cpu_to_le32(BFS_I(inode)->i_eblock);
> -- 
> 2.41.0
> 
-- 
Jan Kara <jack@...e.com>
SUSE Labs, CR