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

Merge patches from Andrew Morton:
 "A few misc things and very nearly all of the MM tree.  A tremendous
  amount of stuff (again), including a significant rbtree library
  rework."

* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (160 commits)
  sparc64: Support transparent huge pages.
  mm: thp: Use more portable PMD clearing sequenece in zap_huge_pmd().
  mm: Add and use update_mmu_cache_pmd() in transparent huge page code.
  sparc64: Document PGD and PMD layout.
  sparc64: Eliminate PTE table memory wastage.
  sparc64: Halve the size of PTE tables
  sparc64: Only support 4MB huge pages and 8KB base pages.
  memory-hotplug: suppress "Trying to free nonexistent resource <XXXXXXXXXXXXXXXX-YYYYYYYYYYYYYYYY>" warning
  mm: memcg: clean up mm_match_cgroup() signature
  mm: document PageHuge somewhat
  mm: use %pK for /proc/vmallocinfo
  mm, thp: fix mlock statistics
  mm, thp: fix mapped pages avoiding unevictable list on mlock
  memory-hotplug: update memory block's state and notify userspace
  memory-hotplug: preparation to notify memory block's state at memory hot remove
  mm: avoid section mismatch warning for memblock_type_name
  make GFP_NOTRACK definition unconditional
  cma: decrease cc.nr_migratepages after reclaiming pagelist
  CMA: migrate mlocked pages
  kpageflags: fix wrong KPF_THP on non-huge compound pages
  ...

1 files changed, 7 insertions, 25 deletions

diff --git a/kernel/fork.c b/kernel/fork.c
index a2b1efc2092..1cd7d581b3b 100644
--- a/kernel/fork.c
+++ b/kernel/fork.c
@@ -423,7 +423,12 @@ static int dup_mmap(struct mm_struct *mm, struct mm_struct *oldmm)
 				mapping->i_mmap_writable++;
 			flush_dcache_mmap_lock(mapping);
 			/* insert tmp into the share list, just after mpnt */
-			vma_prio_tree_add(tmp, mpnt);
+			if (unlikely(tmp->vm_flags & VM_NONLINEAR))
+				vma_nonlinear_insert(tmp,
+						&mapping->i_mmap_nonlinear);
+			else
+				vma_interval_tree_insert_after(tmp, mpnt,
+							&mapping->i_mmap);
 			flush_dcache_mmap_unlock(mapping);
 			mutex_unlock(&mapping->i_mmap_mutex);
 		}
@@ -622,26 +627,6 @@ void mmput(struct mm_struct *mm)
 }
 EXPORT_SYMBOL_GPL(mmput);
 
-/*
- * We added or removed a vma mapping the executable. The vmas are only mapped
- * during exec and are not mapped with the mmap system call.
- * Callers must hold down_write() on the mm's mmap_sem for these
- */
-void added_exe_file_vma(struct mm_struct *mm)
-{
-	mm->num_exe_file_vmas++;
-}
-
-void removed_exe_file_vma(struct mm_struct *mm)
-{
-	mm->num_exe_file_vmas--;
-	if ((mm->num_exe_file_vmas == 0) && mm->exe_file) {
-		fput(mm->exe_file);
-		mm->exe_file = NULL;
-	}
-
-}
-
 void set_mm_exe_file(struct mm_struct *mm, struct file *new_exe_file)
 {
 	if (new_exe_file)
@@ -649,15 +634,13 @@ void set_mm_exe_file(struct mm_struct *mm, struct file *new_exe_file)
 	if (mm->exe_file)
 		fput(mm->exe_file);
 	mm->exe_file = new_exe_file;
-	mm->num_exe_file_vmas = 0;
 }
 
 struct file *get_mm_exe_file(struct mm_struct *mm)
 {
 	struct file *exe_file;
 
-	/* We need mmap_sem to protect against races with removal of
-	 * VM_EXECUTABLE vmas */
+	/* We need mmap_sem to protect against races with removal of exe_file */
 	down_read(&mm->mmap_sem);
 	exe_file = mm->exe_file;
 	if (exe_file)
@@ -1078,7 +1061,6 @@ static int copy_signal(unsigned long clone_flags, struct task_struct *tsk)
 	init_rwsem(&sig->group_rwsem);
 #endif
 
-	sig->oom_adj = current->signal->oom_adj;
 	sig->oom_score_adj = current->signal->oom_score_adj;
 	sig->oom_score_adj_min = current->signal->oom_score_adj_min;