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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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