Pull WRITE_ONCE argument order change from Christian Borntraeger:
"As discussed on LKML[1] it was agreed that WRITE_ONCE(x, val) is
better than ASSIGN_ONCE(val, x)
Lets change that for 3.19 as 3.19 has no user yet, but the first users
will hit linux-next soon"
[1] http://marc.info/?l=linux-kernel&m=
142081181707596
* tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/borntraeger/linux:
kernel: Change ASSIGN_ONCE(val, x) to WRITE_ONCE(x, val)