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Subject[PATCH] add page->mapping handling interface [11/35] changes in EXT2
Change page->mapping handling in ext2

Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>

---
fs/ext2/dir.c | 20 ++++++++++----------
1 file changed, 10 insertions(+), 10 deletions(-)
Index: test-2.6.23-rc4-mm1/fs/ext2/dir.c
===================================================================
--- test-2.6.23-rc4-mm1.orig/fs/ext2/dir.c
+++ test-2.6.23-rc4-mm1/fs/ext2/dir.c
@@ -65,7 +65,7 @@ ext2_last_byte(struct inode *inode, unsi

static int ext2_commit_chunk(struct page *page, loff_t pos, unsigned len)
{
- struct address_space *mapping = page->mapping;
+ struct address_space *mapping = page_mapping_cache(page);
struct inode *dir = mapping->host;
int err = 0;

@@ -87,7 +87,7 @@ static int ext2_commit_chunk(struct page

static void ext2_check_page(struct page *page)
{
- struct inode *dir = page->mapping->host;
+ struct inode *dir = page_inode(page);
struct super_block *sb = dir->i_sb;
unsigned chunk_size = ext2_chunk_size(dir);
char *kaddr = page_address(page);
@@ -429,7 +429,7 @@ void ext2_set_link(struct inode *dir, st
int err;

lock_page(page);
- err = __ext2_write_begin(NULL, page->mapping, pos, len,
+ err = __ext2_write_begin(NULL, page_mapping_cache(page), pos, len,
AOP_FLAG_UNINTERRUPTIBLE, &page, NULL);
BUG_ON(err);
de->inode = cpu_to_le32(inode->i_ino);
@@ -512,8 +512,8 @@ int ext2_add_link (struct dentry *dentry
got_it:
pos = page_offset(page) +
(char*)de - (char*)page_address(page);
- err = __ext2_write_begin(NULL, page->mapping, pos, rec_len, 0,
- &page, NULL);
+ err = __ext2_write_begin(NULL, page_mapping_cache(page), pos, rec_len,
+ 0, &page, NULL);
if (err)
goto out_unlock;
if (de->inode) {
@@ -546,7 +546,7 @@ out_unlock:
*/
int ext2_delete_entry (struct ext2_dir_entry_2 * dir, struct page * page )
{
- struct address_space *mapping = page->mapping;
+ struct address_space *mapping = page_mapping_cache(page);
struct inode *inode = mapping->host;
char *kaddr = page_address(page);
unsigned from = ((char*)dir - kaddr) & ~(ext2_chunk_size(inode)-1);
@@ -570,8 +570,8 @@ int ext2_delete_entry (struct ext2_dir_e
from = (char*)pde - (char*)page_address(page);
pos = page_offset(page) + from;
lock_page(page);
- err = __ext2_write_begin(NULL, page->mapping, pos, to - from, 0,
- &page, NULL);
+ err = __ext2_write_begin(NULL, page_mapping_cache(page), pos,
+ to - from, 0, &page, NULL);
BUG_ON(err);
if (pde)
pde->rec_len = cpu_to_le16(to - from);
@@ -600,8 +600,8 @@ int ext2_make_empty(struct inode *inode,
if (!page)
return -ENOMEM;

- err = __ext2_write_begin(NULL, page->mapping, 0, chunk_size, 0,
- &page, NULL);
+ err = __ext2_write_begin(NULL, page_mapping_cache(page), 0, chunk_size,
+ 0, &page, NULL);
if (err) {
unlock_page(page);
goto fail;
-
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