linux-next: build failure after merge of the final tree

[Stephen Rothwell]

Hi all,

After merging the final tree, today's linux-next build (sparc32 defconfig)
failed like this:

mm/page_alloc.c: In function '__free_pages_bootmem':
mm/page_alloc.c:704: error: implicit declaration of function 'prefetchw'
fs/dcache.c: In function '__d_lookup_rcu':
fs/dcache.c:1810: error: implicit declaration of function 'prefetch'
fs/inode.c: In function 'new_inode':
fs/inode.c:894: error: implicit declaration of function 'spin_lock_prefetch'
net/core/skbuff.c: In function '__alloc_skb':
net/core/skbuff.c:184: error: implicit declaration of function 'prefetchw'
In file included from net/ipv4/ip_forward.c:32:
include/net/udp.h: In function 'udp_csum_outgoing':
include/net/udp.h:141: error: implicit declaration of function 'prefetch'
In file included from net/ipv6/af_inet6.c:48:
include/net/udp.h: In function 'udp_csum_outgoing':
include/net/udp.h:141: error: implicit declaration of function 'prefetch'
net/unix/af_unix.c: In function 'unix_ioctl':
net/unix/af_unix.c:2066: error: implicit declaration of function 'prefetch'
In file included from net/sunrpc/xprtsock.c:44:
include/net/udp.h: In function 'udp_csum_outgoing':
include/net/udp.h:141: error: implicit declaration of function 'prefetch'
kernel/rcutiny.c: In function 'rcu_process_callbacks':
kernel/rcutiny.c:180: error: implicit declaration of function 'prefetch'

Caused by commit e66eed651fd1 ("list: remove prefetching from regular list
iterators").

I added the following patch for today: