Commit 41e9b63b authored Jan 06, 2006 by Nick Piggin Committed by Linus Torvalds Jan 06, 2006

[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>

parent 9617d95e

mm/memory.c

+0 −1

Original line number	Diff line number	Diff line
		@@ -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 */