[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>
diff --git a/mm/memory.c b/mm/memory.c
index d7ca7de..7197f9b 100644
--- a/mm/memory.c
+++ b/mm/memory.c
@@ -1977,7 +1977,6 @@
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 */