Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20;
Date:   Thu, 6 Jul 2023 13:01:42 +0200
From:   Jan Kara <jack@suse.cz>
To:     Jeff Layton <jlayton@kernel.org>
Cc:     Christian Brauner <brauner@kernel.org>,
        Namjae Jeon <linkinjeon@kernel.org>,
        Sungjong Seo <sj1557.seo@samsung.com>,
        Al Viro <viro@zeniv.linux.org.uk>, Jan Kara <jack@suse.cz>,
        linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH v2 40/92] exfat: convert to ctime accessor functions
Message-ID: <20230706110142.lxisom262crklz5u@quack3>
References: <20230705185755.579053-1-jlayton@kernel.org>
 <20230705190309.579783-1-jlayton@kernel.org>
 <20230705190309.579783-38-jlayton@kernel.org>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <20230705190309.579783-38-jlayton@kernel.org>
Precedence: bulk

On Wed 05-07-23 15:01:05, 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@kernel.org>

Looks good. Feel free to add:

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

								Honza

> ---
>  fs/exfat/file.c  |  4 ++--
>  fs/exfat/inode.c |  6 +++---
>  fs/exfat/namei.c | 21 +++++++++------------
>  fs/exfat/super.c |  3 +--
>  4 files changed, 15 insertions(+), 19 deletions(-)
> 
> diff --git a/fs/exfat/file.c b/fs/exfat/file.c
> index 3cbd270e0cba..f40ecfeee3a4 100644
> --- a/fs/exfat/file.c
> +++ b/fs/exfat/file.c
> @@ -22,7 +22,7 @@ static int exfat_cont_expand(struct inode *inode, loff_t size)
>  	if (err)
>  		return err;
>  
> -	inode->i_ctime = inode->i_mtime = current_time(inode);
> +	inode->i_mtime = inode_set_ctime_current(inode);
>  	mark_inode_dirty(inode);
>  
>  	if (!IS_SYNC(inode))
> @@ -290,7 +290,7 @@ int exfat_setattr(struct mnt_idmap *idmap, struct dentry *dentry,
>  	}
>  
>  	if (attr->ia_valid & ATTR_SIZE)
> -		inode->i_mtime = inode->i_ctime = current_time(inode);
> +		inode->i_mtime = inode_set_ctime_current(inode);
>  
>  	setattr_copy(&nop_mnt_idmap, inode, attr);
>  	exfat_truncate_atime(&inode->i_atime);
> diff --git a/fs/exfat/inode.c b/fs/exfat/inode.c
> index 481dd338f2b8..13329baeafbc 100644
> --- a/fs/exfat/inode.c
> +++ b/fs/exfat/inode.c
> @@ -355,7 +355,7 @@ static void exfat_write_failed(struct address_space *mapping, loff_t to)
>  
>  	if (to > i_size_read(inode)) {
>  		truncate_pagecache(inode, i_size_read(inode));
> -		inode->i_mtime = inode->i_ctime = current_time(inode);
> +		inode->i_mtime = inode_set_ctime_current(inode);
>  		exfat_truncate(inode);
>  	}
>  }
> @@ -398,7 +398,7 @@ static int exfat_write_end(struct file *file, struct address_space *mapping,
>  		exfat_write_failed(mapping, pos+len);
>  
>  	if (!(err < 0) && !(ei->attr & ATTR_ARCHIVE)) {
> -		inode->i_mtime = inode->i_ctime = current_time(inode);
> +		inode->i_mtime = inode_set_ctime_current(inode);
>  		ei->attr |= ATTR_ARCHIVE;
>  		mark_inode_dirty(inode);
>  	}
> @@ -577,7 +577,7 @@ static int exfat_fill_inode(struct inode *inode, struct exfat_dir_entry *info)
>  
>  	inode->i_blocks = round_up(i_size_read(inode), sbi->cluster_size) >> 9;
>  	inode->i_mtime = info->mtime;
> -	inode->i_ctime = info->mtime;
> +	inode_set_ctime_to_ts(inode, info->mtime);
>  	ei->i_crtime = info->crtime;
>  	inode->i_atime = info->atime;
>  
> diff --git a/fs/exfat/namei.c b/fs/exfat/namei.c
> index e91022ff80ef..c007de6ac1c7 100644
> --- a/fs/exfat/namei.c
> +++ b/fs/exfat/namei.c
> @@ -569,7 +569,7 @@ static int exfat_create(struct mnt_idmap *idmap, struct inode *dir,
>  		goto unlock;
>  
>  	inode_inc_iversion(dir);
> -	dir->i_ctime = dir->i_mtime = current_time(dir);
> +	dir->i_mtime = inode_set_ctime_current(dir);
>  	if (IS_DIRSYNC(dir))
>  		exfat_sync_inode(dir);
>  	else
> @@ -582,8 +582,7 @@ static int exfat_create(struct mnt_idmap *idmap, struct inode *dir,
>  		goto unlock;
>  
>  	inode_inc_iversion(inode);
> -	inode->i_mtime = inode->i_atime = inode->i_ctime =
> -		EXFAT_I(inode)->i_crtime = current_time(inode);
> +	inode->i_mtime = inode->i_atime = EXFAT_I(inode)->i_crtime = inode_set_ctime_current(inode);
>  	exfat_truncate_atime(&inode->i_atime);
>  	/* timestamp is already written, so mark_inode_dirty() is unneeded. */
>  
> @@ -817,7 +816,7 @@ static int exfat_unlink(struct inode *dir, struct dentry *dentry)
>  	ei->dir.dir = DIR_DELETED;
>  
>  	inode_inc_iversion(dir);
> -	dir->i_mtime = dir->i_atime = dir->i_ctime = current_time(dir);
> +	dir->i_mtime = dir->i_atime = inode_set_ctime_current(dir);
>  	exfat_truncate_atime(&dir->i_atime);
>  	if (IS_DIRSYNC(dir))
>  		exfat_sync_inode(dir);
> @@ -825,7 +824,7 @@ static int exfat_unlink(struct inode *dir, struct dentry *dentry)
>  		mark_inode_dirty(dir);
>  
>  	clear_nlink(inode);
> -	inode->i_mtime = inode->i_atime = inode->i_ctime = current_time(inode);
> +	inode->i_mtime = inode->i_atime = inode_set_ctime_current(inode);
>  	exfat_truncate_atime(&inode->i_atime);
>  	exfat_unhash_inode(inode);
>  	exfat_d_version_set(dentry, inode_query_iversion(dir));
> @@ -852,7 +851,7 @@ static int exfat_mkdir(struct mnt_idmap *idmap, struct inode *dir,
>  		goto unlock;
>  
>  	inode_inc_iversion(dir);
> -	dir->i_ctime = dir->i_mtime = current_time(dir);
> +	dir->i_mtime = inode_set_ctime_current(dir);
>  	if (IS_DIRSYNC(dir))
>  		exfat_sync_inode(dir);
>  	else
> @@ -866,8 +865,7 @@ static int exfat_mkdir(struct mnt_idmap *idmap, struct inode *dir,
>  		goto unlock;
>  
>  	inode_inc_iversion(inode);
> -	inode->i_mtime = inode->i_atime = inode->i_ctime =
> -		EXFAT_I(inode)->i_crtime = current_time(inode);
> +	inode->i_mtime = inode->i_atime = EXFAT_I(inode)->i_crtime = inode_set_ctime_current(inode);
>  	exfat_truncate_atime(&inode->i_atime);
>  	/* timestamp is already written, so mark_inode_dirty() is unneeded. */
>  
> @@ -979,7 +977,7 @@ static int exfat_rmdir(struct inode *dir, struct dentry *dentry)
>  	ei->dir.dir = DIR_DELETED;
>  
>  	inode_inc_iversion(dir);
> -	dir->i_mtime = dir->i_atime = dir->i_ctime = current_time(dir);
> +	dir->i_mtime = dir->i_atime = inode_set_ctime_current(dir);
>  	exfat_truncate_atime(&dir->i_atime);
>  	if (IS_DIRSYNC(dir))
>  		exfat_sync_inode(dir);
> @@ -988,7 +986,7 @@ static int exfat_rmdir(struct inode *dir, struct dentry *dentry)
>  	drop_nlink(dir);
>  
>  	clear_nlink(inode);
> -	inode->i_mtime = inode->i_atime = inode->i_ctime = current_time(inode);
> +	inode->i_mtime = inode->i_atime = inode_set_ctime_current(inode);
>  	exfat_truncate_atime(&inode->i_atime);
>  	exfat_unhash_inode(inode);
>  	exfat_d_version_set(dentry, inode_query_iversion(dir));
> @@ -1353,8 +1351,7 @@ static int exfat_rename(struct mnt_idmap *idmap,
>  			exfat_warn(sb, "abnormal access to an inode dropped");
>  			WARN_ON(new_inode->i_nlink == 0);
>  		}
> -		new_inode->i_ctime = EXFAT_I(new_inode)->i_crtime =
> -			current_time(new_inode);
> +		EXFAT_I(new_inode)->i_crtime = inode_set_ctime_current(new_inode);
>  	}
>  
>  unlock:
> diff --git a/fs/exfat/super.c b/fs/exfat/super.c
> index 8c32460e031e..8e0ca4b0fc8f 100644
> --- a/fs/exfat/super.c
> +++ b/fs/exfat/super.c
> @@ -379,8 +379,7 @@ static int exfat_read_root(struct inode *inode)
>  	ei->i_size_ondisk = i_size_read(inode);
>  
>  	exfat_save_attr(inode, ATTR_SUBDIR);
> -	inode->i_mtime = inode->i_atime = inode->i_ctime = ei->i_crtime =
> -		current_time(inode);
> +	inode->i_mtime = inode->i_atime = ei->i_crtime = inode_set_ctime_current(inode);
>  	exfat_truncate_atime(&inode->i_atime);
>  	return 0;
>  }
> -- 
> 2.41.0
> 
-- 
Jan Kara <jack@suse.com>
SUSE Labs, CR