OFFSET_MAX is self-annotated and more readable.
Signed-off-by: Zhen Lei <thunder.leizhen@huawei.com>
Acked-by: David Sterba <dsterba@suse.com>
Reviewed-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>