Merge branch 'perf/core' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip into trace/tip/tracing/core-7

Conflicts:
	include/linux/ftrace_event.h
	include/trace/ftrace.h
	kernel/trace/trace_event_perf.c
	kernel/trace/trace_kprobe.c
	kernel/trace/trace_syscalls.c

Signed-off-by: Steven Rostedt <rostedt@goodmis.org>

3 files changed, 5 insertions, 8 deletions

diff --git a/mm/hugetlb.c b/mm/hugetlb.c
index ffbdfc86aedf..4c9e6bbf3772 100644
--- a/mm/hugetlb.c
+++ b/mm/hugetlb.c
@@ -1039,7 +1039,7 @@ static struct page *alloc_huge_page(struct vm_area_struct *vma,
                 page = alloc_buddy_huge_page(h, vma, addr);
                 if (!page) {
                         hugetlb_put_quota(inode->i_mapping, chg);
-                        return ERR_PTR(-VM_FAULT_OOM);
+                        return ERR_PTR(-VM_FAULT_SIGBUS);
                 }
         }
 
diff --git a/mm/memcontrol.c b/mm/memcontrol.c
index 6c755de385f7..8a79a6f0f029 100644
--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c
@@ -1601,7 +1601,6 @@ static int __mem_cgroup_try_charge(struct mm_struct *mm,
                          * There is a small race that "from" or "to" can be
                          * freed by rmdir, so we use css_tryget().
                          */
-                        rcu_read_lock();
                         from = mc.from;
                         to = mc.to;
                         if (from && css_tryget(&from->css)) {
@@ -1622,7 +1621,6 @@ static int __mem_cgroup_try_charge(struct mm_struct *mm,
                                         do_continue = (to == mem_over_limit);
                                 css_put(&to->css);
                         }
-                        rcu_read_unlock();
                         if (do_continue) {
                                 DEFINE_WAIT(wait);
                                 prepare_to_wait(&mc.waitq, &wait,
diff --git a/mm/rmap.c b/mm/rmap.c
index 07fc94758799..0feeef860a8f 100644
--- a/mm/rmap.c
+++ b/mm/rmap.c
@@ -336,14 +336,13 @@ vma_address(struct page *page, struct vm_area_struct *vma)
 
 /*
  * At what user virtual address is page expected in vma?
- * checking that the page matches the vma.
+ * Caller should check the page is actually part of the vma.
  */
 unsigned long page_address_in_vma(struct page *page, struct vm_area_struct *vma)
 {
-        if (PageAnon(page)) {
-                if (vma->anon_vma != page_anon_vma(page))
-                        return -EFAULT;
-        } else if (page->mapping && !(vma->vm_flags & VM_NONLINEAR)) {
+        if (PageAnon(page))
+                ;
+        else if (page->mapping && !(vma->vm_flags & VM_NONLINEAR)) {
                 if (!vma->vm_file ||
                     vma->vm_file->f_mapping != page->mapping)
                         return -EFAULT;