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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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