linux-kernel - Re: [RESEND PATCH v3 1/2] fs/buffer: clean up block_commit

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Message-ID: <20230626134141.reroeq3hj4tja24d@quack3>
Date:   Mon, 26 Jun 2023 15:41:41 +0200
From:   Jan Kara <jack@...e.cz>
To:     Bean Huo <beanhuo@...pp.de>
Cc:     viro@...iv.linux.org.uk, brauner@...nel.org,
        akpm@...ux-foundation.org, jack@...e.cz, jack@...e.com,
        tytso@....edu, adilger.kernel@...ger.ca, mark@...heh.com,
        jlbec@...lplan.org, joseph.qi@...ux.alibaba.com,
        willy@...radead.org, hch@...radead.org, linux-ext4@...r.kernel.org,
        linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org,
        ocfs2-devel@....oracle.com, beanhuo@...ron.com
Subject: Re: [RESEND PATCH v3 1/2] fs/buffer: clean up block_commit_write

On Mon 26-06-23 07:55:17, Bean Huo wrote:
> From: Bean Huo <beanhuo@...ron.com>
> 
> Originally inode is used to get blksize, after commit 45bce8f3e343
> ("fs/buffer.c: make block-size be per-page and protected by the page lock"),
> __block_commit_write no longer uses this parameter inode.
> 
> Signed-off-by: Bean Huo <beanhuo@...ron.com>

Looks good to me. Feel free to add:

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

								Honza

> ---
>  fs/buffer.c | 10 ++++------
>  1 file changed, 4 insertions(+), 6 deletions(-)
> 
> diff --git a/fs/buffer.c b/fs/buffer.c
> index bd091329026c..50821dfb02f7 100644
> --- a/fs/buffer.c
> +++ b/fs/buffer.c
> @@ -2180,8 +2180,7 @@ int __block_write_begin(struct page *page, loff_t pos, unsigned len,
>  }
>  EXPORT_SYMBOL(__block_write_begin);
>  
> -static int __block_commit_write(struct inode *inode, struct folio *folio,
> -		size_t from, size_t to)
> +static int __block_commit_write(struct folio *folio, size_t from, size_t to)
>  {
>  	size_t block_start, block_end;
>  	bool partial = false;
> @@ -2277,7 +2276,7 @@ int block_write_end(struct file *file, struct address_space *mapping,
>  	flush_dcache_folio(folio);
>  
>  	/* This could be a short (even 0-length) commit */
> -	__block_commit_write(inode, folio, start, start + copied);
> +	__block_commit_write(folio, start, start + copied);
>  
>  	return copied;
>  }
> @@ -2601,8 +2600,7 @@ EXPORT_SYMBOL(cont_write_begin);
>  int block_commit_write(struct page *page, unsigned from, unsigned to)
>  {
>  	struct folio *folio = page_folio(page);
> -	struct inode *inode = folio->mapping->host;
> -	__block_commit_write(inode, folio, from, to);
> +	__block_commit_write(folio, from, to);
>  	return 0;
>  }
>  EXPORT_SYMBOL(block_commit_write);
> @@ -2650,7 +2648,7 @@ int block_page_mkwrite(struct vm_area_struct *vma, struct vm_fault *vmf,
>  
>  	ret = __block_write_begin_int(folio, 0, end, get_block, NULL);
>  	if (!ret)
> -		ret = __block_commit_write(inode, folio, 0, end);
> +		ret = __block_commit_write(folio, 0, end);
>  
>  	if (unlikely(ret < 0))
>  		goto out_unlock;
> -- 
> 2.34.1
> 
-- 
Jan Kara <jack@...e.com>
SUSE Labs, CR