smbfs: convert to new aops

 * If the writer ends up delaying the write, the writer needs to

 * increment the page use counts until he is done with the page.

 */

static int smb_prepare_write(struct file *file, struct page *page, 

			     unsigned offset, unsigned to)

static int smb_write_begin(struct file *file, struct address_space *mapping,

			loff_t pos, unsigned len, unsigned flags,

			struct page **pagep, void **fsdata)

{

	pgoff_t index = pos >> PAGE_CACHE_SHIFT;

	*pagep = __grab_cache_page(mapping, index);

	if (!*pagep)

		return -ENOMEM;

	return 0;

}

static int smb_commit_write(struct file *file, struct page *page,

			    unsigned offset, unsigned to)

static int smb_write_end(struct file *file, struct address_space *mapping,

			loff_t pos, unsigned len, unsigned copied,

			struct page *page, void *fsdata)

{

	int status;

	unsigned offset = pos & (PAGE_CACHE_SIZE - 1);

	status = -EFAULT;

	lock_kernel();

	status = smb_updatepage(file, page, offset, to-offset);

	status = smb_updatepage(file, page, offset, copied);

	unlock_kernel();

	if (!status) {

		if (!PageUptodate(page) && copied == PAGE_CACHE_SIZE)

			SetPageUptodate(page);

		status = copied;

	}

	unlock_page(page);

	page_cache_release(page);

	return status;

}

const struct address_space_operations smb_file_aops = {

	.readpage = smb_readpage,

	.writepage = smb_writepage,

	.prepare_write = smb_prepare_write,

	.commit_write = smb_commit_write

	.write_begin = smb_write_begin,

	.write_end = smb_write_end,

};

/*