Merge branch 'akpm' (incoming from Andrew)

Merge first batch of fixes from Andrew Morton:

 - A couple of kthread changes

 - A few minor audit patches

 - A number of fbdev patches.  Florian remains AWOL so I'm picking up
   some of these.

 - A few kbuild things

 - ocfs2 updates

 - Almost all of the MM queue

(And in the meantime, I already have the second big batch from Andrew
pending in my mailbox ;^)

* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (149 commits)
  memcg: take reference before releasing rcu_read_lock
  mem hotunplug: fix kfree() of bootmem memory
  mmKconfig: add an option to disable bounce
  mm, nobootmem: do memset() after memblock_reserve()
  mm, nobootmem: clean-up of free_low_memory_core_early()
  fs/buffer.c: remove unnecessary init operation after allocating buffer_head.
  numa, cpu hotplug: change links of CPU and node when changing node number by onlining CPU
  mm: fix memory_hotplug.c printk format warning
  mm: swap: mark swap pages writeback before queueing for direct IO
  swap: redirty page if page write fails on swap file
  mm, memcg: give exiting processes access to memory reserves
  thp: fix huge zero page logic for page with pfn == 0
  memcg: avoid accessing memcg after releasing reference
  fs: fix fsync() error reporting
  memblock: fix missing comment of memblock_insert_region()
  mm: Remove unused parameter of pages_correctly_reserved()
  firmware, memmap: fix firmware_map_entry leak
  mm/vmstat: add note on safety of drain_zonestat
  mm: thp: add split tail pages to shrink page list in page reclaim
  mm: allow for outstanding swap writeback accounting
  ...

1 files changed, 28 insertions, 11 deletions

diff --git a/mm/hugetlb.c b/mm/hugetlb.c
index 1a12f5b9a0ab..9b9aeef8e590 100644
--- a/mm/hugetlb.c
+++ b/mm/hugetlb.c
@@ -2121,6 +2121,21 @@ int hugetlb_report_node_meminfo(int nid, char *buf)
 		nid, h->surplus_huge_pages_node[nid]);
 }
 
+void hugetlb_show_meminfo(void)
+{
+	struct hstate *h;
+	int nid;
+
+	for_each_node_state(nid, N_MEMORY)
+		for_each_hstate(h)
+			pr_info("Node %d hugepages_total=%u hugepages_free=%u hugepages_surp=%u hugepages_size=%lukB\n",
+				nid,
+				h->nr_huge_pages_node[nid],
+				h->free_huge_pages_node[nid],
+				h->surplus_huge_pages_node[nid],
+				1UL << (huge_page_order(h) + PAGE_SHIFT - 10));
+}
+
 /* Return the number pages of memory we physically have, in PAGE_SIZE units. */
 unsigned long hugetlb_total_pages(void)
 {
@@ -2247,10 +2262,11 @@ static pte_t make_huge_pte(struct vm_area_struct *vma, struct page *page,
 	pte_t entry;
 
 	if (writable) {
-		entry =
-		    pte_mkwrite(pte_mkdirty(mk_pte(page, vma->vm_page_prot)));
+		entry = huge_pte_mkwrite(huge_pte_mkdirty(mk_huge_pte(page,
+					 vma->vm_page_prot)));
 	} else {
-		entry = huge_pte_wrprotect(mk_pte(page, vma->vm_page_prot));
+		entry = huge_pte_wrprotect(mk_huge_pte(page,
+					   vma->vm_page_prot));
 	}
 	entry = pte_mkyoung(entry);
 	entry = pte_mkhuge(entry);
@@ -2264,7 +2280,7 @@ static void set_huge_ptep_writable(struct vm_area_struct *vma,
 {
 	pte_t entry;
 
-	entry = pte_mkwrite(pte_mkdirty(huge_ptep_get(ptep)));
+	entry = huge_pte_mkwrite(huge_pte_mkdirty(huge_ptep_get(ptep)));
 	if (huge_ptep_set_access_flags(vma, address, ptep, entry, 1))
 		update_mmu_cache(vma, address, ptep);
 }
@@ -2379,7 +2395,7 @@ again:
 		 * HWPoisoned hugepage is already unmapped and dropped reference
 		 */
 		if (unlikely(is_hugetlb_entry_hwpoisoned(pte))) {
-			pte_clear(mm, address, ptep);
+			huge_pte_clear(mm, address, ptep);
 			continue;
 		}
 
@@ -2403,7 +2419,7 @@ again:
 
 		pte = huge_ptep_get_and_clear(mm, address, ptep);
 		tlb_remove_tlb_entry(tlb, ptep, address);
-		if (pte_dirty(pte))
+		if (huge_pte_dirty(pte))
 			set_page_dirty(page);
 
 		page_remove_rmap(page);
@@ -2856,7 +2872,7 @@ int hugetlb_fault(struct mm_struct *mm, struct vm_area_struct *vma,
 	 * page now as it is used to determine if a reservation has been
 	 * consumed.
 	 */
-	if ((flags & FAULT_FLAG_WRITE) && !pte_write(entry)) {
+	if ((flags & FAULT_FLAG_WRITE) && !huge_pte_write(entry)) {
 		if (vma_needs_reservation(h, vma, address) < 0) {
 			ret = VM_FAULT_OOM;
 			goto out_mutex;
@@ -2886,12 +2902,12 @@ int hugetlb_fault(struct mm_struct *mm, struct vm_area_struct *vma,
 
 
 	if (flags & FAULT_FLAG_WRITE) {
-		if (!pte_write(entry)) {
+		if (!huge_pte_write(entry)) {
 			ret = hugetlb_cow(mm, vma, address, ptep, entry,
 							pagecache_page);
 			goto out_page_table_lock;
 		}
-		entry = pte_mkdirty(entry);
+		entry = huge_pte_mkdirty(entry);
 	}
 	entry = pte_mkyoung(entry);
 	if (huge_ptep_set_access_flags(vma, address, ptep, entry,
@@ -2972,7 +2988,8 @@ long follow_hugetlb_page(struct mm_struct *mm, struct vm_area_struct *vma,
 		 * directly from any kind of swap entries.
 		 */
 		if (absent || is_swap_pte(huge_ptep_get(pte)) ||
-		    ((flags & FOLL_WRITE) && !pte_write(huge_ptep_get(pte)))) {
+		    ((flags & FOLL_WRITE) &&
+		      !huge_pte_write(huge_ptep_get(pte)))) {
 			int ret;
 
 			spin_unlock(&mm->page_table_lock);
@@ -3042,7 +3059,7 @@ unsigned long hugetlb_change_protection(struct vm_area_struct *vma,
 		}
 		if (!huge_pte_none(huge_ptep_get(ptep))) {
 			pte = huge_ptep_get_and_clear(mm, address, ptep);
-			pte = pte_mkhuge(pte_modify(pte, newprot));
+			pte = pte_mkhuge(huge_pte_modify(pte, newprot));
 			pte = arch_make_huge_pte(pte, vma, NULL, 0);
 			set_huge_pte_at(mm, address, ptep, pte);
 			pages++;