slub: set slub_max_order to 0
ext4: fix failure exits

a) leaking root dentry is bad
b) in case of failed ext4_mb_init() we don't want to do ext4_mb_release()
c) OTOH, in the same case we *do* want ext4_ext_release()

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

Conflicts:

	fs/ext4/super.c
Make sure the early resume function is called as first item in the early
resume queue.

Conflicts:
	drivers/misc/touch_wake.c