Re: [PATCH 02/27] iomap: remove the iomap arguments to ->page_{prepare,done}

["Darrick J. Wong" <djwong@kernel.org>]

On Mon, Jul 19, 2021 at 12:34:55PM +0200, Christoph Hellwig wrote:
> These aren't actually used by the only instance implementing the methods.
> 
> Signed-off-by: Christoph Hellwig <hch@lst.de>

/me finds it kind of amusing that we still don't have any ->page_prepare
use cases for actually passing the page in, but if nobody /else/ has any
objection or imminently wants to use the iomap argument, then...

Reviewed-by: Darrick J. Wong <djwong@kernel.org>

--D

> ---
>  fs/gfs2/bmap.c         | 5 ++---
>  fs/iomap/buffered-io.c | 6 +++---
>  include/linux/iomap.h  | 5 ++---
>  3 files changed, 7 insertions(+), 9 deletions(-)
> 
> diff --git a/fs/gfs2/bmap.c b/fs/gfs2/bmap.c
> index ed8b67b2171817..5414c2c3358092 100644
> --- a/fs/gfs2/bmap.c
> +++ b/fs/gfs2/bmap.c
> @@ -1002,7 +1002,7 @@ static void gfs2_write_unlock(struct inode *inode)
>  }
>  
>  static int gfs2_iomap_page_prepare(struct inode *inode, loff_t pos,
> -				   unsigned len, struct iomap *iomap)
> +				   unsigned len)
>  {
>  	unsigned int blockmask = i_blocksize(inode) - 1;
>  	struct gfs2_sbd *sdp = GFS2_SB(inode);
> @@ -1013,8 +1013,7 @@ static int gfs2_iomap_page_prepare(struct inode *inode, loff_t pos,
>  }
>  
>  static void gfs2_iomap_page_done(struct inode *inode, loff_t pos,
> -				 unsigned copied, struct page *page,
> -				 struct iomap *iomap)
> +				 unsigned copied, struct page *page)
>  {
>  	struct gfs2_trans *tr = current->journal_info;
>  	struct gfs2_inode *ip = GFS2_I(inode);
> diff --git a/fs/iomap/buffered-io.c b/fs/iomap/buffered-io.c
> index 87ccb3438becd9..75310f6fcf8401 100644
> --- a/fs/iomap/buffered-io.c
> +++ b/fs/iomap/buffered-io.c
> @@ -605,7 +605,7 @@ iomap_write_begin(struct inode *inode, loff_t pos, unsigned len, unsigned flags,
>  		return -EINTR;
>  
>  	if (page_ops && page_ops->page_prepare) {
> -		status = page_ops->page_prepare(inode, pos, len, iomap);
> +		status = page_ops->page_prepare(inode, pos, len);
>  		if (status)
>  			return status;
>  	}
> @@ -638,7 +638,7 @@ iomap_write_begin(struct inode *inode, loff_t pos, unsigned len, unsigned flags,
>  
>  out_no_page:
>  	if (page_ops && page_ops->page_done)
> -		page_ops->page_done(inode, pos, 0, NULL, iomap);
> +		page_ops->page_done(inode, pos, 0, NULL);
>  	return status;
>  }
>  
> @@ -714,7 +714,7 @@ static size_t iomap_write_end(struct inode *inode, loff_t pos, size_t len,
>  	if (old_size < pos)
>  		pagecache_isize_extended(inode, old_size, pos);
>  	if (page_ops && page_ops->page_done)
> -		page_ops->page_done(inode, pos, ret, page, iomap);
> +		page_ops->page_done(inode, pos, ret, page);
>  	put_page(page);
>  
>  	if (ret < len)
> diff --git a/include/linux/iomap.h b/include/linux/iomap.h
> index 479c1da3e2211e..093519d91cc9cc 100644
> --- a/include/linux/iomap.h
> +++ b/include/linux/iomap.h
> @@ -108,10 +108,9 @@ iomap_sector(struct iomap *iomap, loff_t pos)
>   * associated page could not be obtained.
>   */
>  struct iomap_page_ops {
> -	int (*page_prepare)(struct inode *inode, loff_t pos, unsigned len,
> -			struct iomap *iomap);
> +	int (*page_prepare)(struct inode *inode, loff_t pos, unsigned len);
>  	void (*page_done)(struct inode *inode, loff_t pos, unsigned copied,
> -			struct page *page, struct iomap *iomap);
> +			struct page *page);
>  };
>  
>  /*
> -- 
> 2.30.2
>