mm: remove khugepaged double thp vmstat update with CONFIG_NUMA=n
Andrea Arcangeli [Wed, 15 Jun 2011 22:08:08 +0000 (15:08 -0700)]
Johannes noticed the vmstat update is already taken care of by
khugepaged_alloc_hugepage() internally.  The only places that are required
to update the vmstat are the callers of alloc_hugepage (callers of
khugepaged_alloc_hugepage aren't).

Signed-off-by: Andrea Arcangeli <aarcange@redhat.com>
Reported-by: Johannes Weiner <jweiner@redhat.com>
Acked-by: Rik van Riel <riel@redhat.com>
Reviewed-by: Minchan Kim <minchan.kim@gmail.com>
Acked-by: Johannes Weiner <jweiner@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

mm/huge_memory.c

index 615d974..81532f2 100644 (file)
@@ -2234,11 +2234,8 @@ static void khugepaged_loop(void)
        while (likely(khugepaged_enabled())) {
 #ifndef CONFIG_NUMA
                hpage = khugepaged_alloc_hugepage();
-               if (unlikely(!hpage)) {
-                       count_vm_event(THP_COLLAPSE_ALLOC_FAILED);
+               if (unlikely(!hpage))
                        break;
-               }
-               count_vm_event(THP_COLLAPSE_ALLOC);
 #else
                if (IS_ERR(hpage)) {
                        khugepaged_alloc_sleep();