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    Subject[PATCH] add page->mapping handling interface [34/35] changes in UNIONFS
    Changes page->mapping handling in UNIONFS

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

    ---
    fs/unionfs/mmap.c | 8 ++++----
    1 file changed, 4 insertions(+), 4 deletions(-)

    Index: test-2.6.23-rc4-mm1/fs/unionfs/mmap.c
    ===================================================================
    --- test-2.6.23-rc4-mm1.orig/fs/unionfs/mmap.c
    +++ test-2.6.23-rc4-mm1/fs/unionfs/mmap.c
    @@ -61,7 +61,7 @@ static int unionfs_writepage(struct page
    char *kaddr, *lower_kaddr;
    int saved_for_writepages = wbc->for_writepages;

    - inode = page->mapping->host;
    + inode = page_inode(page);
    lower_inode = unionfs_lower_inode(inode);

    /* find lower page (returns a locked page) */
    @@ -225,7 +225,7 @@ static int unionfs_commit_write(struct f
    if ((err = unionfs_file_revalidate(file, 1)))
    goto out;

    - inode = page->mapping->host;
    + inode = page_inode(page);
    lower_inode = unionfs_lower_inode(inode);

    if (UNIONFS_F(file) != NULL)
    @@ -283,7 +283,7 @@ static void unionfs_sync_page(struct pag
    struct page *lower_page;
    struct address_space *mapping;

    - inode = page->mapping->host;
    + inode = page_inode(page);
    lower_inode = unionfs_lower_inode(inode);

    /* find lower page (returns a locked page) */
    @@ -292,7 +292,7 @@ static void unionfs_sync_page(struct pag
    goto out;

    /* do the actual sync */
    - mapping = lower_page->mapping;
    + mapping = page_mapping_cache(lower_page);
    /*
    * XXX: can we optimize ala RAIF and set the lower page to be
    * discarded after a successful sync_page?
    -
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