Re: [patch 19/19] Use page_cache_xxx in drivers/block/rd.c

[Fengguang Wu <wfg@mail.ustc.edu.cn>]

On Wed, Nov 28, 2007 at 05:11:11PM -0800, Christoph Lameter wrote:
> Use page_cache_xxx in drivers/block/rd.c
> 
> Signed-off-by: Christoph Lameter <clameter@sgi.com>
> ---
>  drivers/block/rd.c |    8 ++++----
>  1 file changed, 4 insertions(+), 4 deletions(-)
> 
> Index: mm/drivers/block/rd.c
> ===================================================================
> --- mm.orig/drivers/block/rd.c	2007-11-28 12:19:49.673905513 -0800
> +++ mm/drivers/block/rd.c	2007-11-28 14:13:01.076977633 -0800
> @@ -122,7 +122,7 @@ static void make_page_uptodate(struct pa
>  			}
>  		} while ((bh = bh->b_this_page) != head);
>  	} else {
> -		memset(page_address(page), 0, PAGE_CACHE_SIZE);
> +		memset(page_address(page), 0, page_cache_size(page_mapping(page)));
>  	}
>  	flush_dcache_page(page);
>  	SetPageUptodate(page);
> @@ -215,9 +215,9 @@ static const struct address_space_operat
>  static int rd_blkdev_pagecache_IO(int rw, struct bio_vec *vec, sector_t sector,
>  				struct address_space *mapping)
>  {
> -	pgoff_t index = sector >> (PAGE_CACHE_SHIFT - 9);
> +	pgoff_t index = sector >> (page_cache_size(mapping) - 9);
                                   page_cache_shift

Cheers,
Fengguang