[PATCH] mm: pfault optimisation

This atomic operation is superfluous: the pte will be added with the
referenced bit set, and the page will be referenced through this mapping after
the page fault handler returns anyway.

Signed-off-by: Nick Piggin <npiggin@suse.de>
Cc: Hugh Dickins <hugh@veritas.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 0 insertions, 1 deletions

diff --git a/mm/memory.c b/mm/memory.c
index d7ca7de10f4d..7197f9bcd384 100644
--- a/mm/memory.c
+++ b/mm/memory.c
@@ -1977,7 +1977,6 @@ static int do_anonymous_page(struct mm_struct *mm, struct vm_area_struct *vma,
                         goto release;
                 inc_mm_counter(mm, anon_rss);
                 lru_cache_add_active(page);
-                SetPageReferenced(page);
                 page_add_new_anon_rmap(page, vma, address);
         } else {
                 /* Map the ZERO_PAGE - vm_page_prot is readonly */