Add the missing NULL check of the return value of find_or_create_page() in function ocfs2_duplicate_clusters_by_page(). [[email protected]: fix layout, per Joel] Signed-off-by: Gu Zheng <[email protected]> Acked-by: Joel Becker <[email protected]> Cc: Mark Fasheh <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>