linux-kernel - [PATCH 7/7] mm: page_alloc: Default allow file pages to use remote nodes for fair allocation policy

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <1386943807-29601-8-git-send-email-mgorman@suse.de>
Date:	Fri, 13 Dec 2013 14:10:07 +0000
From:	Mel Gorman <mgorman@...e.de>
To:	Johannes Weiner <hannes@...xchg.org>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	Dave Hansen <dave.hansen@...el.com>,
	Rik van Riel <riel@...hat.com>,
	Linux-MM <linux-mm@...ck.org>,
	LKML <linux-kernel@...r.kernel.org>, Mel Gorman <mgorman@...e.de>
Subject: [PATCH 7/7] mm: page_alloc: Default allow file pages to use remote nodes for fair allocation policy

Indications from Johannes that he wanted this. Needs some data and/or justification why
thrash protection needs it plus docs describing how MPOL_LOCAL is now different before
it should be considered finished. I do not necessarily agree this patch is necessary
but it's worth punting it out there for discussion and testing.

Not signed off
---
 mm/page_alloc.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index bf49918..bce40c0 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -1885,7 +1885,8 @@ unsigned __bitwise__ zone_distribute_mode __read_mostly;
 #define DISTRIBUTE_STUPID_ANON	(DISTRIBUTE_LOCAL_ANON|DISTRIBUTE_REMOTE_ANON)
 #define DISTRIBUTE_STUPID_FILE	(DISTRIBUTE_LOCAL_FILE|DISTRIBUTE_REMOTE_FILE)
 #define DISTRIBUTE_STUPID_SLAB	(DISTRIBUTE_LOCAL_SLAB|DISTRIBUTE_REMOTE_SLAB)
-#define DISTRIBUTE_DEFAULT	(DISTRIBUTE_LOCAL_ANON|DISTRIBUTE_LOCAL_FILE|DISTRIBUTE_LOCAL_SLAB)
+#define DISTRIBUTE_DEFAULT	(DISTRIBUTE_LOCAL_ANON|DISTRIBUTE_LOCAL_FILE|DISTRIBUTE_LOCAL_SLAB| \
+				 DISTRIBUTE_REMOTE_FILE)
 
 /* Only these GFP flags are affected by the fair zone allocation policy */
 #define DISTRIBUTE_GFP_MASK	((GFP_MOVABLE_MASK|__GFP_PAGECACHE))
-- 
1.8.4

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/