[20/41] Use page_cache_xxx in drivers/block/rd.c

[Christoph Lameter <clameter@sgi.com>]

Use page_cache_xxx in drivers/block/rd.c

Signed-off-by: Christoph Lameter <clameter@sgi.com>
---
 drivers/block/rd.c |    8 ++++----
 1 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/block/rd.c b/drivers/block/rd.c
index 65150b5..e148b3b 100644
--- a/drivers/block/rd.c
+++ b/drivers/block/rd.c
@@ -121,7 +121,7 @@ static void make_page_uptodate(struct page *page)
 			}
 		} 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);
@@ -201,9 +201,9 @@ static const struct address_space_operations ramdisk_aops = {
 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);
 	unsigned int vec_offset = vec->bv_offset;
-	int offset = (sector << 9) & ~PAGE_CACHE_MASK;
+	int offset = page_cache_offset(mapping, (sector << 9));
 	int size = vec->bv_len;
 	int err = 0;
 
@@ -213,7 +213,7 @@ static int rd_blkdev_pagecache_IO(int rw, struct bio_vec *vec, sector_t sector,
 		char *src;
 		char *dst;
 
-		count = PAGE_CACHE_SIZE - offset;
+		count = page_cache_size(mapping) - offset;
 		if (count > size)
 			count = size;
 		size -= count;
-- 
1.5.2.5

-- 
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