Merge branch 'akpm' (incoming from Andrew)

Merge misc fixes from Andrew Morton:
 "13 fixes"

* emailed patches from Andrew Morton <akpm@linux-foundation.org>:
  thp: close race between split and zap huge pages
  mm: fix new kernel-doc warning in filemap.c
  mm: fix CONFIG_DEBUG_VM_RB description
  mm: use paravirt friendly ops for NUMA hinting ptes
  mips: export flush_icache_range
  mm/hugetlb.c: add cond_resched_lock() in return_unused_surplus_pages()
  wait: explain the shadowing and type inconsistencies
  Shiraz has moved
  Documentation/vm/numa_memory_policy.txt: fix wrong document in numa_memory_policy.txt
  powerpc/mm: fix ".__node_distance" undefined
  kernel/watchdog.c:touch_softlockup_watchdog(): use raw_cpu_write()
  init/Kconfig: move the trusted keyring config option to general setup
  vmscan: reclaim_clean_pages_from_list() must use mod_zone_page_state()

3 files changed, 37 insertions, 10 deletions

diff --git a/include/asm-generic/pgtable.h b/include/asm-generic/pgtable.h
index 1ec08c198b66..a8015a7a55bb 100644
--- a/include/asm-generic/pgtable.h
+++ b/include/asm-generic/pgtable.h
@@ -693,24 +693,35 @@ static inline int pmd_numa(pmd_t pmd)
 #ifndef pte_mknonnuma
 static inline pte_t pte_mknonnuma(pte_t pte)
 {
-        pte = pte_clear_flags(pte, _PAGE_NUMA);
-        return pte_set_flags(pte, _PAGE_PRESENT|_PAGE_ACCESSED);
+        pteval_t val = pte_val(pte);
+
+        val &= ~_PAGE_NUMA;
+        val |= (_PAGE_PRESENT|_PAGE_ACCESSED);
+        return __pte(val);
 }
 #endif
 
 #ifndef pmd_mknonnuma
 static inline pmd_t pmd_mknonnuma(pmd_t pmd)
 {
-        pmd = pmd_clear_flags(pmd, _PAGE_NUMA);
-        return pmd_set_flags(pmd, _PAGE_PRESENT|_PAGE_ACCESSED);
+        pmdval_t val = pmd_val(pmd);
+
+        val &= ~_PAGE_NUMA;
+        val |= (_PAGE_PRESENT|_PAGE_ACCESSED);
+
+        return __pmd(val);
 }
 #endif
 
 #ifndef pte_mknuma
 static inline pte_t pte_mknuma(pte_t pte)
 {
-        pte = pte_set_flags(pte, _PAGE_NUMA);
-        return pte_clear_flags(pte, _PAGE_PRESENT);
+        pteval_t val = pte_val(pte);
+
+        val &= ~_PAGE_PRESENT;
+        val |= _PAGE_NUMA;
+
+        return __pte(val);
 }
 #endif
 
@@ -729,8 +740,12 @@ static inline void ptep_set_numa(struct mm_struct *mm, unsigned long addr,
 #ifndef pmd_mknuma
 static inline pmd_t pmd_mknuma(pmd_t pmd)
 {
-        pmd = pmd_set_flags(pmd, _PAGE_NUMA);
-        return pmd_clear_flags(pmd, _PAGE_PRESENT);
+        pmdval_t val = pmd_val(pmd);
+
+        val &= ~_PAGE_PRESENT;
+        val |= _PAGE_NUMA;
+
+        return __pmd(val);
 }
 #endif
 
diff --git a/include/linux/mtd/spear_smi.h b/include/linux/mtd/spear_smi.h
index 8ae1726044c3..581603ac1277 100644
--- a/include/linux/mtd/spear_smi.h
+++ b/include/linux/mtd/spear_smi.h
@@ -1,6 +1,6 @@
 /*
  * Copyright © 2010 ST Microelectronics
- * Shiraz Hashim <shiraz.hashim@st.com>
+ * Shiraz Hashim <shiraz.linux.kernel@gmail.com>
  *
  * This file is licensed under the terms of the GNU General Public
  * License version 2. This program is licensed "as is" without any
diff --git a/include/linux/wait.h b/include/linux/wait.h
index e7d9d9ed14f5..bd68819f0815 100644
--- a/include/linux/wait.h
+++ b/include/linux/wait.h
@@ -191,11 +191,23 @@ wait_queue_head_t *bit_waitqueue(void *, int);
         (!__builtin_constant_p(state) ||                                \
                 state == TASK_INTERRUPTIBLE || state == TASK_KILLABLE)  \
 
+/*
+ * The below macro ___wait_event() has an explicit shadow of the __ret
+ * variable when used from the wait_event_*() macros.
+ *
+ * This is so that both can use the ___wait_cond_timeout() construct
+ * to wrap the condition.
+ *
+ * The type inconsistency of the wait_event_*() __ret variable is also
+ * on purpose; we use long where we can return timeout values and int
+ * otherwise.
+ */
+
 #define ___wait_event(wq, condition, state, exclusive, ret, cmd)        \
 ({                                                                      \
         __label__ __out;                                                \
         wait_queue_t __wait;                                            \
-        long __ret = ret;                                               \
+        long __ret = ret;       /* explicit shadow */                   \
                                                                         \
         INIT_LIST_HEAD(&__wait.task_list);                              \
         if (exclusive)                                                  \