Merge branch 'akpm' (Andrew's patch-bomb)

Merge Andrew's second set of patches:
 - MM
 - a few random fixes
 - a couple of RTC leftovers

* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (120 commits)
  rtc/rtc-88pm80x: remove unneed devm_kfree
  rtc/rtc-88pm80x: assign ret only when rtc_register_driver fails
  mm: hugetlbfs: close race during teardown of hugetlbfs shared page tables
  tmpfs: distribute interleave better across nodes
  mm: remove redundant initialization
  mm: warn if pg_data_t isn't initialized with zero
  mips: zero out pg_data_t when it's allocated
  memcg: gix memory accounting scalability in shrink_page_list
  mm/sparse: remove index_init_lock
  mm/sparse: more checks on mem_section number
  mm/sparse: optimize sparse_index_alloc
  memcg: add mem_cgroup_from_css() helper
  memcg: further prevent OOM with too many dirty pages
  memcg: prevent OOM with too many dirty pages
  mm: mmu_notifier: fix freed page still mapped in secondary MMU
  mm: memcg: only check anon swapin page charges for swap cache
  mm: memcg: only check swap cache pages for repeated charging
  mm: memcg: split swapin charge function into private and public part
  mm: memcg: remove needless !mm fixup to init_mm when charging
  mm: memcg: remove unneeded shmem charge type
  ...

1 files changed, 11 insertions, 10 deletions

diff --git a/net/ipv4/tcp_input.c b/net/ipv4/tcp_input.c
index 9be30b039ae3..2fd2bc9e3c64 100644
--- a/net/ipv4/tcp_input.c
+++ b/net/ipv4/tcp_input.c
@@ -4351,19 +4351,20 @@ static void tcp_ofo_queue(struct sock *sk)
 static bool tcp_prune_ofo_queue(struct sock *sk);
 static int tcp_prune_queue(struct sock *sk);
 
-static int tcp_try_rmem_schedule(struct sock *sk, unsigned int size)
+static int tcp_try_rmem_schedule(struct sock *sk, struct sk_buff *skb,
+                                 unsigned int size)
 {
         if (atomic_read(&sk->sk_rmem_alloc) > sk->sk_rcvbuf ||
-            !sk_rmem_schedule(sk, size)) {
+            !sk_rmem_schedule(sk, skb, size)) {
 
                 if (tcp_prune_queue(sk) < 0)
                         return -1;
 
-                if (!sk_rmem_schedule(sk, size)) {
+                if (!sk_rmem_schedule(sk, skb, size)) {
                         if (!tcp_prune_ofo_queue(sk))
                                 return -1;
 
-                        if (!sk_rmem_schedule(sk, size))
+                        if (!sk_rmem_schedule(sk, skb, size))
                                 return -1;
                 }
         }
@@ -4418,7 +4419,7 @@ static void tcp_data_queue_ofo(struct sock *sk, struct sk_buff *skb)
 
         TCP_ECN_check_ce(tp, skb);
 
-        if (unlikely(tcp_try_rmem_schedule(sk, skb->truesize))) {
+        if (unlikely(tcp_try_rmem_schedule(sk, skb, skb->truesize))) {
                 NET_INC_STATS_BH(sock_net(sk), LINUX_MIB_TCPOFODROP);
                 __kfree_skb(skb);
                 return;
@@ -4552,17 +4553,17 @@ static int __must_check tcp_queue_rcv(struct sock *sk, struct sk_buff *skb, int
 
 int tcp_send_rcvq(struct sock *sk, struct msghdr *msg, size_t size)
 {
-        struct sk_buff *skb;
+        struct sk_buff *skb = NULL;
         struct tcphdr *th;
         bool fragstolen;
 
-        if (tcp_try_rmem_schedule(sk, size + sizeof(*th)))
-                goto err;
-
         skb = alloc_skb(size + sizeof(*th), sk->sk_allocation);
         if (!skb)
                 goto err;
 
+        if (tcp_try_rmem_schedule(sk, skb, size + sizeof(*th)))
+                goto err_free;
+
         th = (struct tcphdr *)skb_put(skb, sizeof(*th));
         skb_reset_transport_header(skb);
         memset(th, 0, sizeof(*th));
@@ -4633,7 +4634,7 @@ static void tcp_data_queue(struct sock *sk, struct sk_buff *skb)
                 if (eaten <= 0) {
 queue_and_out:
                         if (eaten < 0 &&
-                            tcp_try_rmem_schedule(sk, skb->truesize))
+                            tcp_try_rmem_schedule(sk, skb, skb->truesize))
                                 goto drop;
 
                         eaten = tcp_queue_rcv(sk, skb, 0, &fragstolen);