linux-kernel - Re: [PATCH v2 46/92] fuse: convert to ctime accessor functions

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Message-ID: <20230706112030.of4nqx5vfxg7tiud@quack3>
Date:   Thu, 6 Jul 2023 13:20:30 +0200
From:   Jan Kara <jack@...e.cz>
To:     Jeff Layton <jlayton@...nel.org>
Cc:     Christian Brauner <brauner@...nel.org>,
        Miklos Szeredi <miklos@...redi.hu>,
        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 46/92] fuse: convert to ctime accessor functions

On Wed 05-07-23 15:01:11, 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/fuse/control.c |  2 +-
>  fs/fuse/dir.c     |  8 ++++----
>  fs/fuse/inode.c   | 16 ++++++++--------
>  3 files changed, 13 insertions(+), 13 deletions(-)
> 
> diff --git a/fs/fuse/control.c b/fs/fuse/control.c
> index 247ef4f76761..ab62e4624256 100644
> --- a/fs/fuse/control.c
> +++ b/fs/fuse/control.c
> @@ -235,7 +235,7 @@ static struct dentry *fuse_ctl_add_dentry(struct dentry *parent,
>  	inode->i_mode = mode;
>  	inode->i_uid = fc->user_id;
>  	inode->i_gid = fc->group_id;
> -	inode->i_atime = inode->i_mtime = inode->i_ctime = current_time(inode);
> +	inode->i_atime = inode->i_mtime = inode_set_ctime_current(inode);
>  	/* setting ->i_op to NULL is not allowed */
>  	if (iop)
>  		inode->i_op = iop;
> diff --git a/fs/fuse/dir.c b/fs/fuse/dir.c
> index f67bef9d83c4..672245ee0394 100644
> --- a/fs/fuse/dir.c
> +++ b/fs/fuse/dir.c
> @@ -933,7 +933,7 @@ void fuse_flush_time_update(struct inode *inode)
>  static void fuse_update_ctime_in_cache(struct inode *inode)
>  {
>  	if (!IS_NOCMTIME(inode)) {
> -		inode->i_ctime = current_time(inode);
> +		inode_set_ctime_current(inode);
>  		mark_inode_dirty_sync(inode);
>  		fuse_flush_time_update(inode);
>  	}
> @@ -1715,8 +1715,8 @@ int fuse_flush_times(struct inode *inode, struct fuse_file *ff)
>  	inarg.mtimensec = inode->i_mtime.tv_nsec;
>  	if (fm->fc->minor >= 23) {
>  		inarg.valid |= FATTR_CTIME;
> -		inarg.ctime = inode->i_ctime.tv_sec;
> -		inarg.ctimensec = inode->i_ctime.tv_nsec;
> +		inarg.ctime = inode_get_ctime(inode).tv_sec;
> +		inarg.ctimensec = inode_get_ctime(inode).tv_nsec;
>  	}
>  	if (ff) {
>  		inarg.valid |= FATTR_FH;
> @@ -1857,7 +1857,7 @@ int fuse_do_setattr(struct dentry *dentry, struct iattr *attr,
>  		if (attr->ia_valid & ATTR_MTIME)
>  			inode->i_mtime = attr->ia_mtime;
>  		if (attr->ia_valid & ATTR_CTIME)
> -			inode->i_ctime = attr->ia_ctime;
> +			inode_set_ctime_to_ts(inode, attr->ia_ctime);
>  		/* FIXME: clear I_DIRTY_SYNC? */
>  	}
>  
> diff --git a/fs/fuse/inode.c b/fs/fuse/inode.c
> index f19d748890f0..549358ffea8b 100644
> --- a/fs/fuse/inode.c
> +++ b/fs/fuse/inode.c
> @@ -194,8 +194,7 @@ void fuse_change_attributes_common(struct inode *inode, struct fuse_attr *attr,
>  		inode->i_mtime.tv_nsec  = attr->mtimensec;
>  	}
>  	if (!(cache_mask & STATX_CTIME)) {
> -		inode->i_ctime.tv_sec   = attr->ctime;
> -		inode->i_ctime.tv_nsec  = attr->ctimensec;
> +		inode_set_ctime(inode, attr->ctime, attr->ctimensec);
>  	}
>  
>  	if (attr->blksize != 0)
> @@ -259,8 +258,8 @@ void fuse_change_attributes(struct inode *inode, struct fuse_attr *attr,
>  		attr->mtimensec = inode->i_mtime.tv_nsec;
>  	}
>  	if (cache_mask & STATX_CTIME) {
> -		attr->ctime = inode->i_ctime.tv_sec;
> -		attr->ctimensec = inode->i_ctime.tv_nsec;
> +		attr->ctime = inode_get_ctime(inode).tv_sec;
> +		attr->ctimensec = inode_get_ctime(inode).tv_nsec;
>  	}
>  
>  	if ((attr_version != 0 && fi->attr_version > attr_version) ||
> @@ -318,8 +317,7 @@ static void fuse_init_inode(struct inode *inode, struct fuse_attr *attr,
>  	inode->i_size = attr->size;
>  	inode->i_mtime.tv_sec  = attr->mtime;
>  	inode->i_mtime.tv_nsec = attr->mtimensec;
> -	inode->i_ctime.tv_sec  = attr->ctime;
> -	inode->i_ctime.tv_nsec = attr->ctimensec;
> +	inode_set_ctime(inode, attr->ctime, attr->ctimensec);
>  	if (S_ISREG(inode->i_mode)) {
>  		fuse_init_common(inode);
>  		fuse_init_file_inode(inode, attr->flags);
> @@ -1401,16 +1399,18 @@ EXPORT_SYMBOL_GPL(fuse_dev_free);
>  static void fuse_fill_attr_from_inode(struct fuse_attr *attr,
>  				      const struct fuse_inode *fi)
>  {
> +	struct timespec64 ctime = inode_get_ctime(&fi->inode);
> +
>  	*attr = (struct fuse_attr){
>  		.ino		= fi->inode.i_ino,
>  		.size		= fi->inode.i_size,
>  		.blocks		= fi->inode.i_blocks,
>  		.atime		= fi->inode.i_atime.tv_sec,
>  		.mtime		= fi->inode.i_mtime.tv_sec,
> -		.ctime		= fi->inode.i_ctime.tv_sec,
> +		.ctime		= ctime.tv_sec,
>  		.atimensec	= fi->inode.i_atime.tv_nsec,
>  		.mtimensec	= fi->inode.i_mtime.tv_nsec,
> -		.ctimensec	= fi->inode.i_ctime.tv_nsec,
> +		.ctimensec	= ctime.tv_nsec,
>  		.mode		= fi->inode.i_mode,
>  		.nlink		= fi->inode.i_nlink,
>  		.uid		= fi->inode.i_uid.val,
> -- 
> 2.41.0
> 
-- 
Jan Kara <jack@...e.com>
SUSE Labs, CR