[PATCH] read_mapping_page for address space

[powerpc.git] / fs / ext2 / dir.c

diff --git a/fs/ext2/dir.c b/fs/ext2/dir.c
index b3dbd71..3c1c9aa 100644 (file)
--- a/fs/ext2/dir.c
+++ b/fs/ext2/dir.c
@@ -159,8 +159,7 @@ fail:
 static struct page * ext2_get_page(struct inode *dir, unsigned long n)
 {
        struct address_space *mapping = dir->i_mapping;
-       struct page *page = read_cache_page(mapping, n,
-                               (filler_t*)mapping->a_ops->readpage, NULL);
+       struct page *page = read_mapping_page(mapping, n, NULL);
        if (!IS_ERR(page)) {
                wait_on_page_locked(page);
                kmap(page);
@@ -416,8 +415,7 @@ void ext2_set_link(struct inode *dir, struct ext2_dir_entry_2 *de,
 
        lock_page(page);
        err = page->mapping->a_ops->prepare_write(NULL, page, from, to);
-       if (err)
-               BUG();
+       BUG_ON(err);
        de->inode = cpu_to_le32(inode->i_ino);
        ext2_set_de_type (de, inode);
        err = ext2_commit_chunk(page, from, to);
@@ -554,8 +552,7 @@ int ext2_delete_entry (struct ext2_dir_entry_2 * dir, struct page * page )
                from = (char*)pde - (char*)page_address(page);
        lock_page(page);
        err = mapping->a_ops->prepare_write(NULL, page, from, to);
-       if (err)
-               BUG();
+       BUG_ON(err);
        if (pde)
                pde->rec_len = cpu_to_le16(to-from);
        dir->inode = 0;
@@ -660,7 +657,7 @@ not_empty:
        return 0;
 }
 
-struct file_operations ext2_dir_operations = {
+const struct file_operations ext2_dir_operations = {
        .llseek         = generic_file_llseek,
        .read           = generic_read_dir,
        .readdir        = ext2_readdir,