Merge branch 'akpm' (patches from Andrew)

Merge second patch-bomb from Andrew Morton:

 - more MM stuff:

    - Kirill's page-flags rework

    - Kirill's now-allegedly-fixed THP rework

    - MADV_FREE implementation

    - DAX feature work (msync/fsync).  This isn't quite complete but DAX
      is new and it's good enough and the guys have a handle on what
      needs to be done - I expect this to be wrapped in the next week or
      two.

  - some vsprintf maintenance work

  - various other misc bits

* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (145 commits)
  printk: change recursion_bug type to bool
  lib/vsprintf: factor out %pN[F] handler as netdev_bits()
  lib/vsprintf: refactor duplicate code to special_hex_number()
  printk-formats.txt: remove unimplemented %pT
  printk: help pr_debug and pr_devel to optimize out arguments
  lib/test_printf.c: test dentry printing
  lib/test_printf.c: add test for large bitmaps
  lib/test_printf.c: account for kvasprintf tests
  lib/test_printf.c: add a few number() tests
  lib/test_printf.c: test precision quirks
  lib/test_printf.c: check for out-of-bound writes
  lib/test_printf.c: don't BUG
  lib/kasprintf.c: add sanity check to kvasprintf
  lib/vsprintf.c: warn about too large precisions and field widths
  lib/vsprintf.c: help gcc make number() smaller
  lib/vsprintf.c: expand field_width to 24 bits
  lib/vsprintf.c: eliminate potential race in string()
  lib/vsprintf.c: move string() below widen_string()
  lib/vsprintf.c: pull out padding code from dentry_name()
  printk: do cond_resched() between lines while outputting to consoles
  ...

4 files changed, 8 insertions, 34 deletions

diff --git a/arch/sparc/Kconfig b/arch/sparc/Kconfig
index 56442d2..3203e42 100644
--- a/arch/sparc/Kconfig
+++ b/arch/sparc/Kconfig
@@ -101,10 +101,6 @@ config LOCKDEP_SUPPORT
 	bool
 	default y if SPARC64
 
-config HAVE_LATENCYTOP_SUPPORT
-	bool
-	default y if SPARC64
-
 config ARCH_HIBERNATION_POSSIBLE
 	def_bool y if SPARC64
 
diff --git a/arch/sparc/include/asm/pgtable_64.h b/arch/sparc/include/asm/pgtable_64.h
index 131d36f..7a38d6a 100644
--- a/arch/sparc/include/asm/pgtable_64.h
+++ b/arch/sparc/include/asm/pgtable_64.h
@@ -681,13 +681,6 @@ static inline unsigned long pmd_trans_huge(pmd_t pmd)
 	return pte_val(pte) & _PAGE_PMD_HUGE;
 }
 
-static inline unsigned long pmd_trans_splitting(pmd_t pmd)
-{
-	pte_t pte = __pte(pmd_val(pmd));
-
-	return pmd_trans_huge(pmd) && pte_special(pte);
-}
-
 #define has_transparent_hugepage() 1
 
 static inline pmd_t pmd_mkold(pmd_t pmd)
@@ -717,29 +710,29 @@ static inline pmd_t pmd_mkdirty(pmd_t pmd)
 	return __pmd(pte_val(pte));
 }
 
-static inline pmd_t pmd_mkyoung(pmd_t pmd)
+static inline pmd_t pmd_mkclean(pmd_t pmd)
 {
 	pte_t pte = __pte(pmd_val(pmd));
 
-	pte = pte_mkyoung(pte);
+	pte = pte_mkclean(pte);
 
 	return __pmd(pte_val(pte));
 }
 
-static inline pmd_t pmd_mkwrite(pmd_t pmd)
+static inline pmd_t pmd_mkyoung(pmd_t pmd)
 {
 	pte_t pte = __pte(pmd_val(pmd));
 
-	pte = pte_mkwrite(pte);
+	pte = pte_mkyoung(pte);
 
 	return __pmd(pte_val(pte));
 }
 
-static inline pmd_t pmd_mksplitting(pmd_t pmd)
+static inline pmd_t pmd_mkwrite(pmd_t pmd)
 {
 	pte_t pte = __pte(pmd_val(pmd));
 
-	pte = pte_mkspecial(pte);
+	pte = pte_mkwrite(pte);
 
 	return __pmd(pte_val(pte));
 }
diff --git a/arch/sparc/mm/fault_64.c b/arch/sparc/mm/fault_64.c
index dbabe57..cb841a3 100644
--- a/arch/sparc/mm/fault_64.c
+++ b/arch/sparc/mm/fault_64.c
@@ -113,9 +113,6 @@ static unsigned int get_user_insn(unsigned long tpc)
 
 #ifdef CONFIG_TRANSPARENT_HUGEPAGE
 	if (pmd_trans_huge(*pmdp)) {
-		if (pmd_trans_splitting(*pmdp))
-			goto out_irq_enable;
-
 		pa  = pmd_pfn(*pmdp) << PAGE_SHIFT;
 		pa += tpc & ~HPAGE_MASK;
 
diff --git a/arch/sparc/mm/gup.c b/arch/sparc/mm/gup.c
index 2e5c4fc..eb3d8e8 100644
--- a/arch/sparc/mm/gup.c
+++ b/arch/sparc/mm/gup.c
@@ -56,8 +56,6 @@ static noinline int gup_pte_range(pmd_t pmd, unsigned long addr,
 			put_page(head);
 			return 0;
 		}
-		if (head != page)
-			get_huge_page_tail(page);
 
 		pages[*nr] = page;
 		(*nr)++;
@@ -70,7 +68,7 @@ static int gup_huge_pmd(pmd_t *pmdp, pmd_t pmd, unsigned long addr,
 			unsigned long end, int write, struct page **pages,
 			int *nr)
 {
-	struct page *head, *page, *tail;
+	struct page *head, *page;
 	int refs;
 
 	if (!(pmd_val(pmd) & _PAGE_VALID))
@@ -82,7 +80,6 @@ static int gup_huge_pmd(pmd_t *pmdp, pmd_t pmd, unsigned long addr,
 	refs = 0;
 	head = pmd_page(pmd);
 	page = head + ((addr & ~PMD_MASK) >> PAGE_SHIFT);
-	tail = page;
 	do {
 		VM_BUG_ON(compound_head(page) != head);
 		pages[*nr] = page;
@@ -103,15 +100,6 @@ static int gup_huge_pmd(pmd_t *pmdp, pmd_t pmd, unsigned long addr,
 		return 0;
 	}
 
-	/* Any tail page need their mapcount reference taken before we
-	 * return.
-	 */
-	while (refs--) {
-		if (PageTail(tail))
-			get_huge_page_tail(tail);
-		tail++;
-	}
-
 	return 1;
 }
 
@@ -126,7 +114,7 @@ static int gup_pmd_range(pud_t pud, unsigned long addr, unsigned long end,
 		pmd_t pmd = *pmdp;
 
 		next = pmd_addr_end(addr, end);
-		if (pmd_none(pmd) || pmd_trans_splitting(pmd))
+		if (pmd_none(pmd))
 			return 0;
 		if (unlikely(pmd_large(pmd))) {
 			if (!gup_huge_pmd(pmdp, pmd, addr, next,