find_or_create_page
page = find_or_create_page(mapping, index, GFP_NOFS);
page = find_or_create_page(mapping, index, GFP_NOFS);
page = find_or_create_page(inode->i_mapping, index, GFP_KERNEL);
page = find_or_create_page(mapping, 0,
page = find_or_create_page(mapping, 0,
page = find_or_create_page(file->f_mapping, index,
page = find_or_create_page(mapping, index, GFP_KERNEL);