linux-ext4 - Re: [PATCH 02/13] documentation: Sync file

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Date:   Tue, 25 May 2021 13:43:13 -0700
From:   "Darrick J. Wong" <djwong@...nel.org>
To:     Jan Kara <jack@...e.cz>
Cc:     linux-fsdevel@...r.kernel.org,
        Christoph Hellwig <hch@...radead.org>,
        Dave Chinner <david@...morbit.com>, ceph-devel@...r.kernel.org,
        Chao Yu <yuchao0@...wei.com>,
        Damien Le Moal <damien.lemoal@....com>,
        "Darrick J. Wong" <darrick.wong@...cle.com>,
        Jaegeuk Kim <jaegeuk@...nel.org>,
        Jeff Layton <jlayton@...nel.org>,
        Johannes Thumshirn <jth@...nel.org>,
        linux-cifs@...r.kernel.org, linux-ext4@...r.kernel.org,
        linux-f2fs-devel@...ts.sourceforge.net, linux-mm@...ck.org,
        linux-xfs@...r.kernel.org, Miklos Szeredi <miklos@...redi.hu>,
        Steve French <sfrench@...ba.org>, Ted Tso <tytso@....edu>,
        Matthew Wilcox <willy@...radead.org>
Subject: Re: [PATCH 02/13] documentation: Sync file_operations members with
 reality

On Tue, May 25, 2021 at 03:50:39PM +0200, Jan Kara wrote:
> Sync listing of struct file_operations members with the real one in
> fs.h.
> 
> Signed-off-by: Jan Kara <jack@...e.cz>
> ---
>  Documentation/filesystems/locking.rst | 15 +++++++++------
>  1 file changed, 9 insertions(+), 6 deletions(-)
> 
> diff --git a/Documentation/filesystems/locking.rst b/Documentation/filesystems/locking.rst
> index 1e894480115b..4ed2b22bd0a8 100644
> --- a/Documentation/filesystems/locking.rst
> +++ b/Documentation/filesystems/locking.rst
> @@ -506,6 +506,7 @@ prototypes::
>  	ssize_t (*write) (struct file *, const char __user *, size_t, loff_t *);
>  	ssize_t (*read_iter) (struct kiocb *, struct iov_iter *);
>  	ssize_t (*write_iter) (struct kiocb *, struct iov_iter *);
> +	int (*iopoll) (struct kiocb *kiocb, bool spin);
>  	int (*iterate) (struct file *, struct dir_context *);
>  	int (*iterate_shared) (struct file *, struct dir_context *);
>  	__poll_t (*poll) (struct file *, struct poll_table_struct *);
> @@ -518,12 +519,6 @@ prototypes::
>  	int (*fsync) (struct file *, loff_t start, loff_t end, int datasync);
>  	int (*fasync) (int, struct file *, int);
>  	int (*lock) (struct file *, int, struct file_lock *);
> -	ssize_t (*readv) (struct file *, const struct iovec *, unsigned long,
> -			loff_t *);
> -	ssize_t (*writev) (struct file *, const struct iovec *, unsigned long,
> -			loff_t *);
> -	ssize_t (*sendfile) (struct file *, loff_t *, size_t, read_actor_t,
> -			void __user *);
>  	ssize_t (*sendpage) (struct file *, struct page *, int, size_t,
>  			loff_t *, int);
>  	unsigned long (*get_unmapped_area)(struct file *, unsigned long,
> @@ -536,6 +531,14 @@ prototypes::
>  			size_t, unsigned int);
>  	int (*setlease)(struct file *, long, struct file_lock **, void **);
>  	long (*fallocate)(struct file *, int, loff_t, loff_t);
> +	void (*show_fdinfo)(struct seq_file *m, struct file *f);
> +	unsigned (*mmap_capabilities)(struct file *);
> +	ssize_t (*copy_file_range)(struct file *, loff_t, struct file *,
> +			loff_t, size_t, unsigned int);
> +	loff_t (*remap_file_range)(struct file *file_in, loff_t pos_in,
> +			struct file *file_out, loff_t pos_out,
> +			loff_t len, unsigned int remap_flags);

Acked-by: Darrick J. Wong <djwong@...nel.org>

The remap_file_range part looks correct to me.  At a glance the others
seem fine too, but I'm not as familiar with them...

--D

> +	int (*fadvise)(struct file *, loff_t, loff_t, int);
>  
>  locking rules:
>  	All may block.
> -- 
> 2.26.2
>